Noise supporting documentation

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Boston Logan International Airport 2023/2024 EDR I 
I. Noise Supporting
Documentation 
This appendix provides detailed information, tables, and figures in support of Chapter 7, Noise . The
contents of this appendix are summarized below. 
I.1 Noise Modeling ..................................................................................................................................................................... I-3 
I.1.1 AEDT Modeled Operations............................................................................................................................... I-3 
Table I-1 2024 Annual Modeled Operations ..................................................................................... I-3 
Table I-2 2023 Annual Modeled Operations ..................................................................................... I-7 
Table I-3 2022 Annual Modeled Operations .................................................................................. I-11 
Figure I-1 Fleet Mix of Commercial Operations (Passenger and Cargo) at Logan Airport, 
1998, 2022-2024 ..................................................................................................................... .I- 16 
Table I-4 Modeled Daily Operations by Commercial and GA Aircraft, 1998, 2022-2024
……………………………………………………………………………………………………………………I-17 
I.1.1.2 Commercial Jet Aircraft by Part 36 Stage Category ................................................. I-18 
Table I-5 Percentage of Commercial Jet Operations by Part 36 Stage Category, 1998,
2022-2024 ................................................................................................................................. I-18 
I.1.1.3 Nighttime Operations .......................................................................................................... I-18 
Table I-6 Modeled Nighttime Operations at Logan Airport, 1998, 2022-2024 ................ I-18 
I.1.2 Runway Use ......................................................................................................................................................... I-19 
Table I-7 2024 Modeled Runway Use by Aircraft Group ........................................................... I-20 
Table I-8 2023 Modeled Runway Use by Aircraft Group ........................................................... I-21 
Table I-9 2022 Modeled Runway Use by Aircraft Group ........................................................... I-22 
Table I-10 Summary of Jet and Non-Jet Aircraft Runway Use, 2024 ...................................... I-23 
Table I-11 Summary of Jet and Non-Jet Aircraft Runway Use, 2023 ...................................... I-24 
Table I-12 Summary of Jet and Non-Jet Aircraft Runway Use, 2022 ...................................... I-25 
Table I-13 Total Modeled Runway Use by All Operations, 2022-2024 .................................. I-26 
Table I-14 Summary of Jet Aircraft Runway Use, 1998, 2022-2024 ......................................... I-27 
Table I-15 Runway Usage by Runway End, 2022-2024................................................................. I-28 
Table I-16 Effective Jet Aircraft Runway Usage, 2022-2024 ........................................................ I-29 
I.1.3 Flight Tracks......................................................................................................................................................... I-29 
Table I-17 Total Count of Flight Tracks Modeled with AEDT, 2022-2024 ............................. I-29 
I.2 Annual Noise Model Results ......................................................................................................................................... I-30 
I.2.1 Noise Exposed Population............................................................................................................................. I-30 
Table I-18 Noise-Exposed Population by Community, 1998, 2022-2024 ............................. I-30 
I.2.2 Cumulative Noise Index (CNI) ...................................................................................................................... I-31 
Table I-19 Cumulative Noise Index (CNI) Effective Perceived Noise Level (EPNL), 1998,
2022-2024 (limit 156.5) ........................................................................................................ I-31

I Boston Logan International Airport 2023/2024 EDR 
Table I-20 Annual Operations and Partial CNI by Airline and per Operation, 2022-2024
……………………………………………………………………………………………………………………I-32 
I.2.3 Dwell and Persistence Reporting ................................................................................................................ I-34 
Figure I-2 Comparison of Annual Hours of Dwell Exceedance by Runway End ................ I-35 
Figure I-3 Comparison of Annual Hours of Persistence Exceedance by Runway End ..... I-35 
I.2.4 Time Above (TA) and Time Above Night (TAN) .................................................................................... I-36 
Table I-21 Time Above (TA) dBA Thresholds in a 24-Hour Period for Average Day, 2022–
2024 36 
Table I-22 Time Above (TA) dBA Thresholds in a Nine Hour Night Period for Average Day,
2022-2024 3 ............................................................................................................................... I-38 
I.3 Status of Mitigation Programs ...................................................................................................................................... I-39 
I.3.1 Residential Sound Insulation Program ..................................................................................................... I-39 
I.3.2 Noise Complaints .............................................................................................................................................. I-39 
Table I-23 Noise Complaint Line Summary, 2022-2024 ............................................................... I-40 
Figure I-4 Noise Complaint Line Complaints and Complaintants by Year, 2022-2024... I-43 
I.4 Statistical Analyses of Flight Tracks ............................................................................................................................. I-43 
I.4.1 Statistical Analyses of Flight Tracks: Runway 4R.................................................................................. I-44 
Table I-24 Runway 4R Nahant Gate Summary, 2022-2024 ......................................................... I-44 
Table I-25 Runway 4R Shoreline Crossings Above 6,000 Feet for 2022 through 2024 ... I-45 
I.4.2 Statistical Analyses of Flight Tracks - Runway 9 ................................................................................... I-46 
Table I-26 Runway 9 Gate Summary — Winthrop Gates 1 and 2, 2022-2024 .................... I-46 
Table I-27 Runway 9 Shoreline Crossings Above 6,000 Feet for 2022 through 2024 ...... I-47 
I.4.3 Statistical Analyses of Flight Tracks - Runway 15R .............................................................................. I-48 
Table I-28 Runways 15R Hull 1 Gate Summary, 2022-2024 ....................................................... I-48 
Table I-29 Runway 15R Shoreline Crossings Above 6,000 Feet, 2022-2024 ........................ I-49 
I.4.4 Statistical Analyses of Flight Tracks: Runways 22R and 22L............................................................ I-49 
Table I-30 Runways 22R and 22L Squantum 2 Gate 1 Summary, 2022-2024........................ I-50 
Table I-31 Runways 22R and 22L Hull 1 Gate Summary, 2022-2024 ...................................... I-50 
Table I-32 Runways 22R and 22L Shoreline Crossings Above 6,000 Feet, 2022-2024 ..... I-51 
I.4.5 Statistical Analyses of Flight Tracks: Runway 27 ................................................................................... I-52 
Table I-33 Runway 27 Corridor Percent of Tracks Through Each Gate, 2024 ...................... I-53 
Table I-34 Runway 27 Corridor Percent of Tracks Through Each Gate, 2023 ...................... I-53 
Table I-35 Runway 27 Corridor Percent of Tracks Through Each Gate, 2022 ...................... I-54 
I.4.6 Statistical Analyses of Flight Tracks: Runway 33L ................................................................................. I-55 
Table I-36 Runway 33L Gates — Passages Below 3,000 Feet, 2022-2024 ............................ I-55 
I.5 2022 through 2024 DNL Levels for Census Block Group Locations .............................................................. I-56 
Table I-37 DNL Values at U.S. Census 2020 Block Groups, 2022-2024 .................................. I-56 
I.6 Airline Fleet Improvements ............................................................................................................................................ I-77 
Table I-38 Percentage of Airline Operations in Stage 3, 4 or 5 Aircraft, 2022-2024......... I-78 
I.7 Massport CAC Executive Committee Brief Slide Deck on Runway 27 Departure Procedure............... I-82 
I.8 Responses to Massport CAC on Changes to Runway 27 Departure Procedures ..................................... I-94

Boston Logan International Airport 2023/2024 EDR I 
I.1 Noise Modeling 
I.1.1 AEDT Modeled Operations 
The following sections of this appendix provide several tables describing the Aviation Environmental
Design Tool (AEDT) input data for 2023 and 2024. Where possible, the data for 2022 are included for
comparison. 
For 2023, a total of 393,363 flight records from the Noise and Operations Monitoring System (NOMS) 
contained suitable data for modeling, which is 99.5 percent of the recorded flight records. For 2024,
410,507 NOMS flight records contained suitable data for modeling, which is 99.3 percent of the recorded
flight records. These operations were scaled slightly by category and airline to match the 395,146 annual
flights in Massport records for 2023, and 413,409 flights in 2024. The total number of annual flights for
2022 was 378,613. 
Table I-1 (2024), Table I-2 (2023), and Table I-3 (2022 for comparison) provide the scaled annual
operations, listed by the modeled AEDT Aircraft Noise and Performance (ANP) aircraft type. Each ANP
type listed in Table I-1 and Table I-2 is also mapped to a runway use group based on its weight and
performance characteristics described in the following Runway Use Section I.1.2. For more on AEDT
Modeling, see User’s Guide Section U.7.3 . 
Table I-1 2024 Annual Modeled Operations 
Aircraft Noise and 
Performance (ANP) Group 
Arrivals Departures 
Total 
Day Night Day Night 
Commercial Jet Operations 
747400 Heavy Jet A 1 1 1 1 4 
7478 Heavy Jet A 4 - 4 - 8 
A340-211 Heavy Jet A 212 3 107 109 431 
A340-642 Heavy Jet A 276 1 270 7 553 
A380-841 Heavy Jet A 408 4 362 50 825 
A380-861 Heavy Jet A 1 - - 1 2 
767300 Heavy Jet B 31 - 31 - 62 
7673ER Heavy Jet B 2,365 1,045 2,004 1,406 6,819 
767400 Heavy Jet B 13 1 12 2 28 
767CF6 Heavy Jet B 127 32 13 146 318 
767JT9 Heavy Jet B 10 3 2 11 26 
777200 Heavy Jet B 734 175 681 228 1,818 
7773ER Heavy Jet B 751 17 374 394 1,536 
7878R Heavy Jet B 83 136 199 20 438 Noise Supporting Documentation I-3

I Boston Logan International Airport 2023/2024 EDR 
Table I-1 2024 Annual Modeled Operations 
Aircraft Noise and 
Performance (ANP) Group 
Arrivals Departures 
Total 
Day Night Day Night 
7879 Heavy Jet B 1,272 74 1,240 106 2,692 
A300-622R Heavy Jet B 192 128 113 207 641 
A330-301 Heavy Jet B 2,266 23 1,971 318 4,577 
A330-343 Heavy Jet B 2,512 216 1,943 784 5,456 
A350-941 Heavy Jet B 1,486 126 795 817 3,224 
MD11GE Heavy Jet B 65 28 13 80 186 
MD11PW Heavy Jet B 44 20 6 58 128 
717200 Light Jet A 7 1 4 4 16 
737300 Light Jet B 1 - 1 - 2 
737400 Light Jet B 6 4 5 5 20 
737700 Light Jet B 12,610 3,231 13,165 2,676 31,683 
737800 Light Jet B 14,474 5,222 17,085 2,611 39,392 
7378MAX Light Jet B 7,036 2,313 7,759 1,591 18,699 
757300 Light Jet B 36 11 32 15 94 
757PW Light Jet B 1,073 766 1,480 359 3,678 
757RR Light Jet B 1,064 409 1,234 240 2,948 
A319-131 Light Jet B 5,405 1,023 5,746 682 12,856 
A320-211 Light Jet B 1,736 272 1,766 243 4,018 
A320-232 Light Jet B 10,736 3,066 11,036 2,765 27,603 
A320-270N Light Jet B 2,821 760 2,949 632 7,163 
A321-232 Light Jet B 24,871 9,520 28,384 6,007 68,781 
EMB190 Light Jet B 15,383 2,143 15,436 2,090 35,052 
CL600 RJ 12 - 12 - 23 
CRJ9-ER RJ 11 - 11 - 22 
EMB14L RJ 1,216 123 1,334 5 2,678 
EMB170 RJ 1,513 96 1,494 115 3,218 
EMB175 RJ 26,043 2,330 26,416 1,957 56,746 
GV RJ 1 - 1 - 2 
LEAR35 RJ 1 - 1 - 2 
Commercial Jets Subtotal 138,971 33,323 145,549 26,745 344,589 
Commercial Non-Jet Operations 
BEC58P Non-jet 16,655 48 16,696 6 33,405 
CNA208 Non-jet 1,275 4 1,263 16 2,559 Noise Supporting Documentation I-4

Boston Logan International Airport 2023/2024 EDR I 
Table I-1 2024 Annual Modeled Operations 
Aircraft Noise and 
Performance (ANP) Group 
Arrivals Departures 
Total 
Day Night Day Night 
CVR580 Non-jet 1 - - 1 2 
DHC830 Non-jet 2,309 50 2,331 28 4,718 
Commercial Non-Jet Operations Subtotal 20,240 102 20,290 52 40,684 
Commercial Aircraft Total 159,211 33,425 165,839 26,797 385,273 
General Aviation Operations 
74720B Heavy Jet A 2 0 2 0 4 
747SP Heavy Jet A 0 1 0 1 2 
A340-642 Heavy Jet A 1 1 0 2 4 
7673ER Heavy Jet B 0 2 1 1 4 
777300 Heavy Jet B 3 0 1 2 6 
7878R Heavy Jet B 1 1 1 1 4 
A330-301 Heavy Jet B 0 2 1 1 4 
A330-343 Heavy Jet B 0 1 0 1 2 
A350-941 Heavy Jet B 1 0 0 1 2 
C17 Heavy Jet B 3 0 3 0 6 
737700 Light Jet B 4 4 4 4 17 
737800 Light Jet B 4 2 4 2 11 
7378MAX Light Jet B 1 0 1 0 2 
737N17 Light Jet B 1 0 1 0 2 
757PW Light Jet B 4 0 2 2 7 
757RR Light Jet B 6 1 5 2 13 
A319-131 Light Jet B 111 0 104 7 222 
A320-211 Light Jet B 5 0 5 0 9 
A320-232 Light Jet B 46 11 41 16 114 
A320-270N Light Jet B 14 9 16 7 47 
A321-232 Light Jet B 121 61 150 32 364 
EMB190 Light Jet B 97 0 87 10 194 
BD-700-1A10 RJ 408 43 400 52 903 
BD-700-1A11 RJ 148 14 150 12 325 
CIT3 RJ 11 3 11 3 28 
CL600 RJ 1,686 134 1,726 95 3,641 
CL601 RJ 302 24 304 23 653 
CNA500 RJ 1 0 1 0 2 Noise Supporting Documentation I-5

I Boston Logan International Airport 2023/2024 EDR 
Table I-1 2024 Annual Modeled Operations 
Aircraft Noise and 
Performance (ANP) Group 
Arrivals Departures 
Total 
Day Night Day Night 
CNA510 RJ 103 13 100 16 231 
CNA525C RJ 295 28 298 25 646 
CNA55B RJ 1,115 114 1,152 77 2,458 
CNA560E RJ 19 1 19 1 39 
CNA560U RJ 76 14 82 8 181 
CNA560XL RJ 507 24 509 22 1,062 
CNA680 RJ 2,048 124 2,064 108 4,344 
CNA750 RJ 675 38 667 46 1,426 
ECLIPSE500 RJ 2 0 2 0 4 
EMB145 RJ 34 5 33 5 77 
EMB14L RJ 4 0 4 0 7 
EMB170 RJ 2 0 2 0 4 
EMB175 RJ 14 0 14 0 28 
FAL20 RJ 19 13 23 9 63 
FAL900EX RJ 195 9 193 11 409 
G650ER RJ 260 38 270 29 597 
GIIB RJ 1 0 1 0 2 
GIV RJ 350 44 358 36 787 
GV RJ 433 45 429 49 955 
IA1125 RJ 47 14 47 14 121 
LEAR35 RJ 708 158 712 154 1,732 
MU3001 RJ 137 8 141 5 291 
1900D Non-jet 1 0 1 0 2 
BEC58P Non-jet 703 18 712 9 1,442 
CNA172 Non-jet 10 0 10 0 21 
CNA182 Non-jet 16 0 16 0 32 
CNA206 Non-jet 3 0 3 0 6 
CNA208 Non-jet 1,088 63 1,079 72 2,303 
CNA441 Non-jet 2 0 2 0 4 
COMSEP Non-jet 87 3 79 11 181 
DHC6 Non-jet 404 49 399 54 907 
DHC8 Non-jet 1 0 0 1 2 
DHC830 Non-jet 3 0 2 1 6 Noise Supporting Documentation I-6

Boston Logan International Airport 2023/2024 EDR I 
Table I-1 2024 Annual Modeled Operations 
Aircraft Noise and 
Performance (ANP) Group 
Arrivals Departures 
Total 
Day Night Day Night 
GASEPF Non-jet 11 1 11 1 24 
GASEPV Non-jet 82 3 85 0 170 
PA30 Non-jet 4 0 4 0 7 
A109 Non-jet 9 0 9 0 19 
B206B3 Non-jet 14 0 14 0 28 
B206L Non-jet 5 0 5 0 9 
B407 Non-jet 13 0 13 0 26 
B429 Non-jet 23 57 25 54 159 
B430 Non-jet 6 1 7 0 13 
EC130 Non-jet 18 4 19 4 45 
H500D Non-jet 2 0 2 0 4 
R44 Non-jet 8 1 7 2 19 
S76 Non-jet 100 11 98 13 222 
SA330J Non-jet 184 8 182 10 384 
SA350D Non-jet 14 1 14 1 30 
SA355F Non-jet 7 0 7 0 13 
SA365N Non-jet 1 0 1 0 2 
S70 Non-jet 3 0 3 0 6 
General Aviation Total 12,846 1,222 12,944 1,124 28,136 
Grand Total 172,057 34,647 178,784 27,921 413,409 
Source: HMMH, 2025. 
Notes: Some totals may not match due to rounding.
ANP – Aircraft Noise and Performance. 
Table I-2 2023 Annual Modeled Operations 
Aircraft Noise and 
Performance (ANP) Group Arrivals Departures Total 
Day Night Day Night 
Commercial Jet Operations 
747400 Heavy Jet A 2 - 2 - 4 
7478 Heavy Jet A - 1 - 1 2 
A340-211 Heavy Jet A 393 - 241 152 786 
A340-642 Heavy Jet A 218 1 215 4 438 
A380-841 Heavy Jet A 325 1 309 17 652 Noise Supporting Documentation I-7

I Boston Logan International Airport 2023/2024 EDR 
Table I-2 2023 Annual Modeled Operations 
Aircraft Noise and 
Performance (ANP) Group Arrivals Departures Total 
Day Night Day Night 
7673ER Heavy Jet B 2,457 1,104 1,778 1,783 7,122 
767400 Heavy Jet B 307 4 225 86 622 
767CF6 Heavy Jet B 195 69 14 250 529 
767JT9 Heavy Jet B 15 4 3 16 38 
777200 Heavy Jet B 643 168 680 131 1,623 
7773ER Heavy Jet B 757 15 368 404 1,544 
7878R Heavy Jet B 37 142 164 15 358 
7879 Heavy Jet B 1,017 76 983 110 2,187 
A300-622R Heavy Jet B 74 134 121 87 416 
A330-301 Heavy Jet B 2,255 19 2,016 257 4,548 
A330-343 Heavy Jet B 2,097 183 1,332 948 4,559 
A350-941 Heavy Jet B 838 70 338 569 1,815 
MD11GE Heavy Jet B 100 36 32 104 272 
MD11PW Heavy Jet B 43 15 11 47 116 
717200 Light Jet A 140 17 154 3 314 
727EM2 Light Jet A 1 - - 1 2 
737400 Light Jet B 12 4 7 9 32 
737700 Light Jet B 15,263 5,014 16,782 3,496 40,555 
737800 Light Jet B 12,971 5,066 15,867 2,169 36,074 
7378MAX Light Jet B 4,894 1,918 5,521 1,291 13,625 
757300 Light Jet B 67 26 77 16 186 
757PW Light Jet B 1,192 578 1,381 389 3,540 
757RR Light Jet B 1,823 721 2,179 365 5,088 
A319-131 Light Jet B 4,171 877 4,182 866 10,095 
A320-211 Light Jet B 1,397 76 1,400 73 2,947 
A320-232 Light Jet B 7,269 1,928 7,517 1,681 18,395 
A320-270N Light Jet B 2,059 781 2,207 633 5,681 
A321-232 Light Jet B 23,629 8,644 26,529 5,745 64,547 
EMB190 Light Jet B 19,535 2,368 19,372 2,531 43,806 
CL600 RJ 2 - 2 - 4 
CRJ9-ER RJ 29 - 25 4 58 
CRJ9-LR RJ 14 2 14 2 32 
EMB14L RJ 1,330 20 1,334 16 2,700 
EMB170 RJ 751 48 677 121 1,596 Noise Supporting Documentation I-8

Boston Logan International Airport 2023/2024 EDR I 
Table I-2 2023 Annual Modeled Operations 
Aircraft Noise and 
Performance (ANP) Group Arrivals Departures Total 
Day Night Day Night 
EMB175 RJ 25,160 1,804 25,300 1,664 53,928 
GIV RJ 1 - 1 - 2 
Commercial Jets Subtotal 133,482 31,937 139,361 26,058 330,838 
Commercial Non-Jet Operations 
BEC58P Non-jet 14,460 53 14,506 7 29,026 
CNA208 Non-jet 1,126 13 1,117 22 2,278 
DHC6 Non-jet 13 3 16 - 32 
DHC830 Non-jet 2,003 32 2,030 5 4,070 
Commercial Non-Jet Operations Subtotal 17,602 101 17,669 34 35,406 
Commercial Aircraft Total 151,084 32,038 157,030 26,092 366,244 
General Aviation Operations 
74720B Heavy Jet A 1 - 1 - 2 
A340-642 Heavy Jet A 2 2 1 3 8 
7673ER Heavy Jet B 1 - 1 - 2 
737700 Light Jet B 3 1 4 - 8 
737800 Light Jet B 7 4 7 4 22 
7378MAX Light Jet B 2 - 2 - 4 
A320-232 Light Jet B 1 - 1 - 2 
A320-270N Light Jet B 1 - 1 - 2 
A321-232 Light Jet B 2 - 2 - 4 
EMB190 Light Jet B 4 - 1 3 8 
MD81 Light Jet B 2 - 2 - 4 
BD-700-1A10 RJ 436 36 419 53 944 
BD-700-1A11 RJ 184 21 180 24 409 
CIT3 RJ 15 5 15 5 40 
CL600 RJ 1,693 124 1,717 101 3,635 
CL601 RJ 528 26 507 48 1,109 
CNA500 RJ 1 - 1 - 2 
CNA510 RJ 69 6 66 8 149 
CNA525C RJ 294 18 296 17 625 
CNA55B RJ 1,255 84 1,251 87 2,677 
CNA560E RJ 16 3 19 - 38 
CNA560U RJ 104 19 110 13 246 
CNA560XL RJ 689 36 688 38 1,450 Noise Supporting Documentation I-9

I Boston Logan International Airport 2023/2024 EDR 
Table I-2 2023 Annual Modeled Operations 
Aircraft Noise and 
Performance (ANP) Group Arrivals Departures Total 
Day Night Day Night 
CNA680 RJ 1,756 129 1,800 85 3,770 
CNA750 RJ 881 54 878 57 1,870 
ECLIPSE500 RJ 102 11 99 14 226 
EMB145 RJ 44 8 41 11 105 
EMB14L RJ - - - - - 
EMB175 RJ 3 - 3 - 6 
FAL20 RJ 3 2 4 1 10 
FAL900EX RJ 233 12 231 14 490 
G650ER RJ 319 35 321 33 708 
GIIB RJ 3 - 3 - 6 
GIV RJ 445 46 449 42 982 
GV RJ 470 45 486 28 1,029 
IA1125 RJ 67 9 68 8 151 
LEAR35 RJ 841 187 861 166 2,055 
MU3001 RJ 196 7 195 8 405 
T-38A RJ 2 - 2 - 4 
BEC58P Non-jet 207 6 204 9 426 
CNA172 Non-jet 11 1 10 2 24 
CNA182 Non-jet 17 - 17 - 34 
CNA208 Non-jet 1,064 81 1,042 103 2,289 
CNA441 Non-jet 6 - 6 - 12 
COMSEP Non-jet 140 5 140 5 290 
DHC6 Non-jet 567 78 566 79 1,289 
DHC830 Non-jet 2 - 2 - 4 
GASEPF Non-jet 21 1 21 1 44 
GASEPV Non-jet 100 1 100 1 202 
PA30 Non-jet 2 - 2 - 4 
PA42 Non-jet 3 - 3 - 6 
A109 Helicopter 3 - 3 - 6 
B206B3 Helicopter 9 - 9 - 18 
B206L Helicopter 4 - 4 - 8 
B407 Helicopter 10 1 9 2 22 
B427 Helicopter 1 - 1 - 2 
B429 Helicopter 35 62 33 64 194 Noise Supporting Documentation I-10

Boston Logan International Airport 2023/2024 EDR I 
Table I-2 2023 Annual Modeled Operations 
Aircraft Noise and 
Performance (ANP) Group Arrivals Departures Total 
Day Night Day Night 
B430 Helicopter 4 - 4 - 8 
EC130 Helicopter 20 5 21 5 50 
H500D Helicopter 3 - 3 - 6 
R44 Helicopter 3 - 3 - 6 
S76 Helicopter 128 14 129 13 284 
SA330J Helicopter 198 2 193 7 399 
SA350D Helicopter 10 1 10 1 22 
SA355F Helicopter 16 - 16 - 32 
SA365N Helicopter 2 - 2 - 4 
SC300C Helicopter 1 - 1 - 2 
General Aviation Total 13,261 1,190 13,288 1,163 28,902 
Grand Total 164,346 33,227 170,318 27,255 395,146 
Source: HMMH, 2025. 
Notes: Some totals may not match due to rounding.
ANP – Aircraft Noise and Performance. 
Table I-3 2022 Annual Modeled Operations 
Aircraft Noise and 
Performance (ANP) Group 
Arrivals Departures 
Total 
Day Night Day Night 
Commercial Jet Operations 
747400 Heavy Jet A 205 0 203 2 410 
7478 Heavy Jet A 5 1 6 0 12 
A340-211 Heavy Jet A 167 0 96 71 334 
A340-642 Heavy Jet A 254 2 238 18 512 
A380-841 Heavy Jet A 172 0 171 1 344 
A380-861 Heavy Jet A 2 0 1 1 4 
767300 Heavy Jet B 178 36 6 208 429 
7673ER Heavy Jet B 3,307 984 2,290 2,000 8,581 
767400 Heavy Jet B 264 3 193 74 534 
767CF6 Heavy Jet B 28 11 8 31 78 
767JT9 Heavy Jet B 24 5 2 27 58 
777200 Heavy Jet B 503 31 413 121 1,069 
7773ER Heavy Jet B 701 141 377 465 1,685 
7878R Heavy Jet B 20 79 90 9 198 Noise Supporting Documentation I-11

I Boston Logan International Airport 2023/2024 EDR 
Table I-3 2022 Annual Modeled Operations 
Aircraft Noise and 
Performance (ANP) Group 
Arrivals Departures 
Total 
Day Night Day Night 
7879 Heavy Jet B 866 43 633 276 1,818 
A300-622R Heavy Jet B 67 253 199 121 640 
A330-301 Heavy Jet B 2,345 22 1,965 402 4,734 
A330-343 Heavy Jet B 1,552 137 860 830 3,379 
A350-941 Heavy Jet B 736 28 383 380 1,527 
DC1030 Heavy Jet B 1 0 0 1 2 
MD11GE Heavy Jet B 61 4 36 29 130 
MD11PW Heavy Jet B 41 0 18 23 82 
717200 Light Jet A 4 2 5 1 12 
737400 Light Jet B 23 6 17 12 58 
737700 Light Jet B 12,059 2,938 13,379 1,618 29,994 
737800 Light Jet B 11,678 5,210 14,585 2,303 33,775 
7378MAX Light Jet B 3,581 1,493 4,205 869 10,148 
757300 Light Jet B 54 5 54 5 118 
757PW Light Jet B 1,902 987 2,643 246 5,778 
757RR Light Jet B 460 56 499 17 1,032 
A319-131 Light Jet B 6,905 918 7,304 519 15,647 
A320-211 Light Jet B 1,349 35 1,285 99 2,769 
A320-232 Light Jet B 8,591 2,503 9,699 1,395 22,187 
A320-271N Light Jet B 1,004 431 1,137 298 2,870 
A321-232 Light Jet B 23,065 7,690 26,386 4,368 61,509 
EMB190 Light Jet B 17,871 2,056 17,824 2,103 39,854 
BD-700-1A10 RJ 0.43 0.00 0.43 0.00 1 
CL600 RJ 13 2 13 1 29 
CL601 RJ 1 0 1 0 3 
CNA750 RJ 1 0 0 0 2 
CRJ9-ER RJ 2,129 183 2,071 241 4,625 
CRJ9-LR RJ 158 3 160 1 323 
EMB145 RJ 1 1 1 1 4 
EMB14L RJ 1,446 31 1,367 110 2,955 
EMB170 RJ 1,100 126 1,128 99 2,453 
EMB175 RJ 23,199 2,056 23,362 1,892 50,508 
G650ER RJ 1.3 0.0 1.3 0.0 2.6 Noise Supporting Documentation I-12

Boston Logan International Airport 2023/2024 EDR I 
Table I-3 2022 Annual Modeled Operations 
Aircraft Noise and 
Performance (ANP) Group 
Arrivals Departures 
Total 
Day Night Day Night 
GIV RJ 11 2 11 2 26 
GV RJ 4 0 4 1 9 
Commercial Jets Subtotal 128,111 28,514 135,332 21,293 313,250 
Commercial Non-Jet Operations 
BEC58P Non-jet 14,578 48 14,620 7 29,253 
CNA208 Non-jet 859 6 858 7 1,729 
DHC6 Non-jet 1 13 14 0 27 
DHC830 Non-jet 1,852 72 1,913 11 3,848 
Commercial Non-Jet Operations Subtotal 17,290 139 17,403 25 34,857 
Commercial Aircraft Total 145,401 28,653 152,736 21,318 348,107 
General Aviation Operations 
A340-211 Heavy Jet A 2 0 1 1 4 
A340-642 Heavy Jet A 1 0 1 0 2 
777300 Heavy Jet B 2 1 2 1 6 
7878R Heavy Jet B 2 0 2 0 4 
A330-343 Heavy Jet B 1 0 1 0 2 
737700 Light Jet B 14 4 11 7 36 
737800 Light Jet B 2 0 2 0 4 
757PW Light Jet B 1 0 1 0 2 
757RR Light Jet B 1 0 1 0 2 
A319-131 Light Jet B 7 0 7 0 14 
A320-211 Light Jet B 5 3 6 2 16 
A320-232 Light Jet B 4 7 12 0 24 
A320-271N Light Jet B 1 0 1 0 2 
A321-232 Light Jet B 29 4 22 12 67 
EMB190 Light Jet B 14 0 13 1 28 
BD-700-1A10 RJ 466 52 466 52 1,037 
BD-700-1A11 RJ 170 16 177 9 373 
CIT3 RJ 18 1 17 2 38 
CL600 RJ 1,600 147 1,650 97 3,495 
CL601 RJ 511 34 510 36 1,091 
CNA500 RJ 5 1 4 2 12 
CNA510 RJ 17 0 15 2 34 Noise Supporting Documentation I-13

I Boston Logan International Airport 2023/2024 EDR 
Table I-3 2022 Annual Modeled Operations 
Aircraft Noise and 
Performance (ANP) Group 
Arrivals Departures 
Total 
Day Night Day Night 
CNA525C RJ 375 63 386 52 877 
CNA55B RJ 1,290 85 1,299 76 2,751 
CNA560E RJ 1 0 1 0 2 
CNA560U RJ 118 13 118 13 262 
CNA560XL RJ 799 52 812 38 1,702 
CNA680 RJ 1,894 163 1,952 105 4,114 
CNA750 RJ 972 65 971 65 2,073 
CRJ9-ER RJ 2 0 2 0 4 
ECLIPSE500 RJ 67 13 67 13 161 
EMB145 RJ 44 4 45 4 97 
EMB175 RJ 1 0 1 0 2 
FAL20 RJ 5 0 3 2 10 
FAL900EX RJ 221 14 216 19 470 
G650ER RJ 296 33 301 28 659 
GII RJ 1 0 1 0 2 
GIIB RJ 1 0 1 0 2 
GIV RJ 428 51 433 46 958 
GV RJ 447 55 461 41 1,004 
IA1125 RJ 76 4 70 10 161 
LEAR35 RJ 883 131 897 117 2,029 
MU3001 RJ 209 17 213 12 450 
1900D Non-jet 1 0 1 0 2 
BEC58P Non-jet 318 20 319 19 676 
CNA172 Non-jet 10 0 10 0 20 
CNA182 Non-jet 28 0 28 0 56 
CNA206 Non-jet 4 0 4 0 8 
CNA208 Non-jet 1,187 76 1,186 77 2,527 
CNA441 Non-jet 38 5 37 6 85 
COMSEP Non-jet 220 3 217 6 446 
DHC6 Non-jet 499 50 488 60 1,097 
DHC830 Non-jet 2 0 2 0 4 
GASEPF Non-jet 13 1 13 1 28 
GASEPV Non-jet 173 5 177 2 357 Noise Supporting Documentation I-14

Boston Logan International Airport 2023/2024 EDR I 
Table I-3 2022 Annual Modeled Operations 
Aircraft Noise and 
Performance (ANP) Group 
Arrivals Departures 
Total 
Day Night Day Night 
HS748A Non-jet 1 0 1 0 2 
PA30 Non-jet 4 0 4 0 8 
PA42 Non-jet 1 0 1 0 2 
A109 Helicopter 8 0 8 0 16 
B206L Helicopter 22 0 22 0 44 
B407 Helicopter 9 2 9 2 22 
B427 Helicopter 2 0 2 0 4 
B429 Helicopter 22 57 19 60 157 
EC130 Helicopter 15 10 17 8 50 
R44 Helicopter 22 0 22 0 44 
S76 Helicopter 143 10 144 9 305 
SA330J Helicopter 193 4 192 5 395 
SA350D Helicopter 23 1 25 0 50 
SA355F Helicopter 12 0 12 0 24 
General Aviation Total 13,975 1,278 14,131 1,122 30,506 
Grand Total 159,376 29,931 166,867 22,440 378,613 
Source: HMMH, 2025. 
Notes: Some totals may not match due to rounding.
ANP – Aircraft Noise and Performance. 
The 2023 and 2024 fleet mix of annual commercial aircraft operations , which is the aircraft takeoffs and
landings for passenger and cargo operations, is shown in Figure I-1 with 2022 and 1998 data for
comparison. Noise Supporting Documentation I-15

I Boston Logan International Airport 2023/2024 EDR 
Figure I-1 Fleet Mix of Commercial Operations (Passenger and Cargo) at Logan Airport, 1998,
2022-2024 
Source: HMMH, 2025. 
Notes: Includes both passenger and cargo operations.
Since 2010, the split between air carrier (AC) jets and regional jets (RJs) is 90 seats with RJs having fewer than 90 seats. 
Prior to 2010, the split between AC jets and RJs was 100 seats with RJs having fewer than 100 seats. 
The share of RJs as a percentage of the commercial fleet was not tracked prior to 2000. 
In the calculation of Day Night Average Sound Level (DNL) , annual operations data are scaled to
represent an average annual day by dividing by the total by 365 days in a year or 366 days for leap years,
such as 2024. To compare operations between years, it is simpler to look at category totals. Table I-4 
summarizes the numbers of average daily operations by categories of aircraft operating at Logan Airport
from 2022 through 2024 and the benchmark year, 1998. Operations are summarized by operator category
commercial or general aviation (GA) , aircraft category, and day or night operation (night defined as
10:00 PM to 7:00 AM, consistent with the definition of DNL). 
56% 
66% 75% 77% 
18% 11% 10% 
44% 
16% 14% 13% 
0% 
10% 
20% 
30% 
40% 
50% 
60% 
70% 
80% 
90% 
100% 
1998 2022 2023 2024 
Percent of Commercial Operations 
Commercial AC Jets Commercial RJ Commercial Non-Jets Noise Supporting Documentation I-16

Boston Logan International Airport 2023/2024 EDR I 
Table I-4 Modeled Daily Operations by Commercial and GA Aircraft, 1998, 2022-2024 
1998 2022 2023 2024 
2022-2023 
Percent 
Change 
2023-2024 
Percent 
Change 
Commercial Aircraft 
Air Carrier Jets 
Day 626.4 567.8 597.8 618.4 5.3% 3.4% 
Night 101.5 123.4 148.8 151.5 20.5% 1.8% 
Total 727.8 691.3 746.6 769.9 8.0% 3.1% 
Regional Jets 1,2 
Day N/A 1 153.9 149.7 159.0 -2.8% 6.2% 
Night N/A 1 13.0 10.1 12.6 -22.5% 25.4% 
Total N/A 1 167.0 159.8 171.6 -4.3% 7.4% 
Commercial Non-jets 
Day 552.6 95.0 96.6 110.7 1.7% 14.6% 
Night 21.9 0.4 0.4 0.4 -17.3% 12.9% 
Total 574.4 95.5 97.0 111.2 1.6% 14.6% 
Total Commercial
Operations 
Day 1,178.9 816.8 844.1 888.1 3.3% 5.2% 
Night 123.3 136.9 159.3 164.5 16.3% 3.3% 
Total 1,302.2 953.7 1,003.4 1,052.7 5.2% 4.9% 
General Aviation (GA) Aircraft 
GA Jets 
Day 35.8 60.8 61.1 55.1 0.5% -9.8% 
Night 4.6 5.2 5.4 5.2 4.2% -4.8% 
Total 40.4 66.0 66.5 60.3 0.8% -9.4% 
GA Non-jets 
Day 37.3 16.2 11.7 15.4 -28.2% 32.0% 
Night 16.3 1.4 1.0 1.2 -25.4% 21.7% 
Total 53.6 17.6 12.7 16.6 -28.0% 31.2% 
Total GA Operations 
Day 73.1 77.0 72.7 70.5 -5.5% -3.1% 
Night 20.9 6.6 6.4 6.4 -2.0% -0.6% 
Total 94.0 83.6 79.2 76.9 -5.3% -2.9% 
Total Aircraft Operations 
Combined
Commercial and GA
Operations 
Day 1,252.0 893.8 916.9 958.6 2.6% 4.5% 
Night 144.2 143.5 165.7 171.0 15.5% 3.2% 
Total 1,396.2 1,037.3 1,082.6 1,129.5 4.4% 4.3% 
Source: Massport’s Noise Monitoring System, 2025; Massport’s Revenue Office, 2025; and HMMH, 2025. 
Notes: Operations include scheduled and unscheduled operations. 
Totals and percentages may not add exactly due to rounding. 
Nighttime operations are defined as occurring between 10:00 PM and 7:00 AM 
1 Regional Jets (RJs) were not tracked separately prior to 2000. 
2 Prior to 2010, the split between air carrier jets and RJs is 100 seats with RJs having less than 100 seats. Since 2010, the split between air carrier jets
and RJs is 90 seats with RJs having less than 90 seats. Noise Supporting Documentation I-17

I Boston Logan International Airport 2023/2024 EDR 
I.1.1.2 Commercial Jet Aircraft by Part 36 Stage Category 
Because of the substantial differences in noise between Stage 2, recertificated Stage 3, Stage 3, Stage 4,
and Stage 5 aircraft, Massport tracks operations by these separate categories to follow their trends. 
Table I-3 shows the percentage of commercial jet operations by stage category from 2022 through 2024
and the 1998 benchmark year. 
Table I-5 Percentage of Commercial Jet Operations by Part 36 Stage Category, 1998, 2022-
2024 
Year Stage 5 
Requirements 1 
Stage 4 
Requirements 2 Stage 3 3 Recertificated 
Stage 3 4 
Stage 2 Greater 
than 75,000 lbs. Total 
2024 37.7% 62.0% 0.3% 0.0% 0.0% 100.0% 
2023 38.4% 61.3% 0.3% 0.0% 0.0% 100.0% 
2022 5 33.3% 64.6% 2.0% 0.0% 0.0% 100.0% 
1998 N/A N/A 65.9% 21.7% 12.4% 100% 
Source: Massport and Federal Aviation Administration (FAA) radar data, 2025; HMMH, 2025. 
Notes: Values less than 0.05% appear as 0.0% due to rounding. 
N/A Not applicable. 
1 This column includes operations by aircraft that would qualify as Stage 5 if recertificated. Aircraft with maximum takeoff weight greater than
121,254 pounds that are certificated after January 1, 2018, must meet Stage 5 standards. The percentage of Logan Airport operations in aircraft
meeting Stage 5 requirements was not determined prior to 2016. 
2 This column includes aircraft that are either certificated Stage 4 or would qualify as Stage 4 if recertificated. Certification as Stage 4 was not
available until 2006 and the percentage of Logan Airport operations in aircraft that meet Stage 4 requirements was not determined prior to
2009. 
3 Certificated Stage 3 aircraft are originally manufactured meeting Stage 3 requirements under Federal Regulation Part 36. This column includes
only operations by Certificated Stage 3 aircraft that do not meet higher certification standards. 
4 Recertificated Stage 3 aircraft are aircraft that were originally manufactured and certified as Stage 1 or 2 under Federal Regulation Part 36,
which have been either treated with hushkits or have been re-engineered to meet Stage 3 requirements. 
5 2022 data in this table reflects a correction with a complete list of airlines from the 2022 ESPR . Values will not match. 
I.1.1.3 Nighttime Operations 
Massport tracks flights that operate between the hours of 10:00 PM to 7:00 AM, when each flight is
weighted 10 decibels (dB) in calculations of DNL. Table I-9 shows this nighttime activity by different
groups of aircraft. As in years past, the majority of nighttime operations (between 10:00 PM and 7:00 AM)
occurred either before midnight or after 5:00 AM. 
Table I-6 Modeled Nighttime Operations at Logan Airport, 1998, 2022-2024 
Year Commercial Jets Commercial 
Non-Jets General Aviation Total 
2024 164.1 0.4 6.4 171.0 
2023 158.9 0.4 6.4 165.7 
2022 136.5 0.4 6.6 143.5 
1998 101.5 21.9 20.9 144.2 Noise Supporting Documentation I-18

Boston Logan International Airport 2023/2024 EDR I 
Table I-6 Modeled Nighttime Operations at Logan Airport, 1998, 2022-2024 
Year Commercial Jets Commercial 
Non-Jets General Aviation Total 
Change from 1998 to 2024 62.7 -21.4 -14.5 26.7 
1998-2024 Percent Change 61.8% -98.1% -69.3% 18.5% 
Change from 2022 to 2024 27.7 0.0 -0.2 27.5 
2022-2024 Percent Change 20.3% -6.7% -2.5% 19.1% 
Source: Massport, 2025; HMMH, 2025. 
Notes: Negative numbers represent a decrease. 
I.1.2 Runway Use 
Massport compares annual runway use to previous years using a variety of summary tables with different
perspectives. The first summary of daytime and nighttime runway usages presented here is broken into
six representative aircraft groups with similar runway requirements. Aircraft groups are defined in User’s
Guide, Section U7.3.2 . Table I-7 and Table I-8 show the runway use summary for the modeled 2023 and
2024 noise conditions, respectively. Table I-9 shows the corresponding summary from the modeled 2022
noise conditions for comparison. The turbojet aircraft in the table were grouped into the different
categories for reporting purposes; NOMS data are fed directly into AEDT for modeling. The modeled
runway usage for a given particular aircraft type may be different from the overall group runway use
presented in Table I-7 through Table I-9. Noise Supporting Documentation I-19

I Boston Logan International Airport 2023/2024 EDR 
Table I-7 2024 Modeled Runway Use by Aircraft Group 
Heavy Jet A Heavy Jet B Light Jet A Light Jet B Regional Jets Non-Jets 
ARRIVALS 
Runway Day Night Day Night Day Night Day Night Day Night Day Night 
04L 0.3% - 0.8% 0.8% - - 3.4% 0.3% 6.3% 0.4% 20.9% 0.6% 
04R 45.0% 27.6% 41.5% 23.2% 42.9% - 36.7% 25.0% 33.9% 27.9% 19.4% 18.8% 
09 - - - - - - - - - - <0.1% - 
15L - - - - - - - - - - 0.1% - 
15R 1.3% - 0.6% 0.7% - - 0.6% 0.9% 0.4% 0.8% 2.0% 26.4% 
22L 29.2% 18.4% 26.9% 30.7% 28.6% - 25.9% 32.9% 26.5% 34.6% 25.7% 21.5% 
22R - - <0.1% - - - <0.1% - <0.1% - 2.2% 0.9% 
27 3.5% - 15.5% 4.2% 28.6% - 22.8% 16.4% 13.9% 16.2% 4.2% 11.5% 
32 - - - - - - 1.0% - 6.9% - 12.6% - 
33L 20.6% 54.0% 14.6% 40.3% - 100.0% 9.6% 24.5% 12.1% 20.1% 8.2% 20.3% 
33R - - - - - - - - - - 4.7% - 
DEPARTURES 
Runway Day Night Day Night Day Night Day Night Day Night Day Night 
04L - - - - - - - - - - 17.9% 4.5% 
04R 14.4% 4.7% 15.5% 3.4% - - 4.5% 3.4% 0.3% 0.6% 8.2% 0.7% 
09 3.9% 6.4% 18.1% 18.1% - 25.0% 33.5% 24.9% 40.2% 29.4% 22.0% 13.9% 
15L - - - - - - - - - - - - 
15R 42.1% 46.5% 11.0% 28.9% - 25.0% 1.6% 9.5% 0.2% 8.5% 1.8% 39.9% 
22L 4.6% 4.1% 4.9% 1.2% - - 1.2% 0.8% <0.1% 0.2% <0.1% - 
22R 9.4% 17.1% 22.7% 20.5% 50.0% - 28.5% 27.1% 29.5% 30.2% 28.7% 17.5% 
27 - - 4.1% 1.6% 25.0% 25.0% 10.9% 20.8% 12.0% 21.5% 6.7% 4.1% 
32 - - - - - - - - - - - - 
33L 25.6% 21.2% 23.8% 26.3% 25.0% 25.0% 19.8% 13.5% 17.8% 9.6% 14.7% 19.4% 
33R - - - - - - - - - - - - 
Source: Massport, 2025; HMMH, 2025. 
Notes: Nighttime for noise modeling is defined as 10:00 PM to 7:00 AM. 
Values may not add exactly to 100 percent due to rounding. Noise Supporting Documentation I-20

Boston Logan International Airport 2023/2024 EDR I 
Table I-8 2023 Modeled Runway Use by Aircraft Group 
Heavy Jet A Heavy Jet B Light Jet A Light Jet B Regional Jets Non-Jets 
ARRIVALS 
Runway Day Night Day Night Day Night Day Night Day Night Day Night 
04L - - 0.9% 1.4% 5.0% 5.9% 3.9% 1.3% 7.4% 1.8% 21.3% 2.0% 
04R 47.8% 19.9% 44.8% 29.3% 54.7% 64.7% 40.4% 30.2% 36.9% 32.5% 23.2% 20.6% 
09 - - - - - - - - - - - - 
15L - - - - - - - - - - 0.1% - 
15R - - 0.2% 0.5% - - 0.3% 0.7% 0.3% 0.8% 2.4% 23.7% 
22L 34.1% 40.1% 31.2% 30.8% 29.8% 23.5% 29.2% 37.9% 28.8% 38.3% 28.0% 25.5% 
22R - - - - - - <0.1% - <0.1% - 3.5% 2.2% 
27 4.4% - 12.6% 9.4% 9.9% 5.9% 20.7% 14.9% 16.6% 14.7% 8.5% 9.8% 
32 - - - - - - 0.9% - 4.9% - 7.4% - 
33L 13.7% 40.1% 10.3% 28.7% 0.6% - 4.5% 15.0% 5.2% 11.9% 2.6% 16.0% 
33R - - - - - - - - - - 2.9% 0.3% 
DEPARTURES 
Runway Day Night Day Night Day Night Day Night Day Night Day Night 
04L - - - - - - - - - - 22.1% 5.0% 
04R 24.4% 29.9% 17.7% 10.0% 1.9% - 6.8% 6.1% 0.9% 1.4% 6.4% 3.2% 
09 2.1% 3.9% 19.6% 17.9% 59.1% 51.6% 35.6% 29.1% 43.4% 35.5% 22.0% 14.1% 
15L - - - - - - - - - - 2.2% 28.2% 
15R 30.4% 26.0% 9.5% 26.5% - - 1.7% 10.4% 0.2% 10.5% 0.1% 18.1% 
22L 14.5% 9.0% 8.5% 4.4% - - 2.4% 2.2% 0.1% 1.3% 0.2% 0.6% 
22R 11.1% 19.8% 25.5% 20.5% 35.1% - 32.2% 28.5% 34.0% 29.9% 33.7% 20.2% 
27 - - 2.6% 1.2% - - 2.7% 5.7% 4.4% 7.3% 3.5% 3.1% 
32 - - - - - - - - - - - - 
33L 17.5% 11.3% 16.7% 19.5% 3.9% 48.4% 18.7% 18.0% 16.9% 14.2% 9.9% 7.6% 
33R - - - - - - - - - - - - 
Source: Massport, 2025; HMMH, 2025. 
Notes: Nighttime for noise modeling is defined as 10:00 PM to 7:00 AM. 
Values may not add exactly to 100 percent due to rounding. Noise Supporting Documentation I-21

I Boston Logan International Airport 2023/2024 EDR 
Table I-9 2022 Modeled Runway Use by Aircraft Group 
Heavy Jet A Heavy Jet B Light Jet A Light Jet B Regional Jets Non-Jets 
ARRIVALS 
Runway Day Night Day Night Day Night Day Night Day Night Day Night 
04L 0.2% - 0.2% 0.1% - - 2.2% <0.1% 5.5% 0.2% 18.5% 0.4% 
04R 40.0% - 34.6% 19.0% 25.0% - 30.8% 18.0% 28.0% 20.0% 14.0% 10.3% 
09 - - - - - - - - - - - - 
15L - - - - - - - - - - - - 
15R 0.1% - 0.4% 1.5% - - 0.6% 1.0% 0.6% 1.0% 4.9% 36.5% 
22L 35.2% - 32.9% 30.2% 50.0% - 31.0% 40.5% 31.1% 41.8% 31.0% 26.9% 
22R - - <0.1% - - - <0.1% <0.1% <0.1% - 3.4% 1.7% 
27 5.3% - 17.4% 6.5% 25.0% 50.0% 27.2% 16.7% 21.2% 20.5% 9.5% 8.7% 
32 - - - - - - 1.2% - 6.2% - 11.7% 0.2% 
33L 19.1% 100.0% 14.6% 42.8% - 50.0% 7.0% 23.8% 7.4% 16.5% 4.7% 14.8% 
33R - - - - - - - - - - 2.3% 0.4% 
DEPARTURES 
Runway Day Night Day Night Day Night Day Night Day Night Day Night 
04L - - - - - - - - - - 17.1% 2.8% 
04R 17.4% 21.2% 10.8% 4.6% - - 4.4% 3.9% 0.1% 0.3% 7.1% 2.0% 
09 3.8% - 18.1% 13.0% 20.0% - 26.9% 20.7% 33.6% 25.2% 15.7% 5.3% 
15L - - - - - - - - - - - - 
15R 29.9% 29.7% 7.5% 31.8% - - 2.1% 20.0% 0.5% 14.5% 4.6% 60.2% 
22L 12.6% 8.7% 7.0% 2.1% - - 2.4% 1.4% <0.1% 0.3% <0.1% 0.8% 
22R 11.9% 20.1% 28.9% 19.4% 20.0% - 34.7% 22.0% 37.0% 30.7% 35.5% 13.0% 
27 0.1% - 3.7% 1.5% - 100.0% 5.8% 9.2% 6.7% 7.6% 3.9% 2.2% 
32 - - - - - - - - - - - - 
33L 24.3% 20.3% 24.0% 27.6% 60.0% - 23.5% 22.8% 22.1% 21.3% 16.1% 13.5% 
33R - - - - - - - - - - - - 
Source: Massport, 2025; HMMH, 2025. 
Notes: Nighttime for noise modeling is defined as 10:00 PM to 7:00 AM. 
Values may not add exactly to 100 percent due to rounding. Noise Supporting Documentation I-22

Boston Logan International Airport 2023/2024 EDR I 
While previous tables present runway use by aircraft groups, Table I-10, Table I-11, and Table I-12 
present the total runway use by jets and non-jet aircraft . The first section of each table displays the
number of departures and arrivals using each runway for an average day in the given year. The second
section displays the same information as annual counts, and the last section displays the percentage that
each runway is used for a given operation type and time of day. 
Table I-10 Summary of Jet and Non-Jet Aircraft Runway Use, 2024 
Runway 
4L 4R 9 14 1 15L 15R 22L 22R 27 32 1 33L 33R Total 
2024 Daily Operations Counts 
Dep Day 11.3 22.8 159.0 0.0 0.0 9.6 5.0 138.6 49.6 0.0 92.5 0.0 488.5 
Dep Night 0.0 2.3 18.3 0.0 0.0 10.0 0.6 20.0 13.3 0.0 11.7 0.0 76.3 
Arr Day 29.1 160.6 0.0 0.0 0.1 3.4 122.6 1.4 83.4 17.8 48.8 3.0 470.1 
Arr Night 0.3 23.8 0.0 0.0 0.0 1.1 31.1 0.0 14.8 0.0 23.6 0.0 94.7 
Total Daily
Operations 40.8 209.5 177.3 0.0 0.1 24.1 159.3 160.0 161.1 17.8 176.6 3.0 1,129.5 
2024 Annual Operations Counts 
Dep Day 4,144 8,344 58,182 0 0 3,520 1,833 50,741 18,162 0 33,858 0 178,784 
Dep Night 13 856 6,712 0 0 3,660 237 7,309 4,869 0 4,265 0 27,921 
Arr Day 10,648 58,775 1 0 27 1,244 44,863 502 30,535 6,507 17,867 1,088 172,057 
Arr Night 125 8,707 0 0 0 385 11,383 3 5,400 0 8,644 0 34,647 
Total
Annual
Operations 
14,930 76,681 64,895 0 27 8,809 58,316 58,556 58,966 6,507 64,633 1,088 413,409 
2024 Percentage Operations 
Dep Day 2% 5% 33% 0% 0% 2% 1% 28% 10% 0% 19% 0% 100% 
Dep Night <1% 3% 24% 0% 0% 13% 1% 26% 17% 0% 15% 0% 100% 
Arr Day 6% 34% <1% 0% <1% 1% 26% <1% 18% 4% 10% 1% 99.7% 
Arr Night <1% 25% 0% 0% 0% 1% 33% <1% 16% 0% 25% 0% 100% 
Source: Massport radar data; HMMH, 2025. 
Notes: These data reflect actual counts or percentages of aircraft operations on each runway end. They should not be confused with effective runway use,
which weights nighttime operations by a factor of 10. Values may not add to 100 percent due to rounding.
Arr – Arrivals
Dep – Departures 
1 Runway 14-32 is unidirectional: there are no arrivals to Runway 14 and no departures from Runway 32. Noise Supporting Documentation I-23

I Boston Logan International Airport 2023/2024 EDR 
Table I-11 Summary of Jet and Non-Jet Aircraft Runway Use, 2023 
Runway 
4L 4R 9 14 1 15L 15R 22L 22R 27 32 1 33L 33R Total 
2023 Daily Operations Counts 
Dep Day 12.2 28.2 162.6 0.0 0.0 8.9 9.1 151.1 14.6 0.0 79.9 0.0 466.6 
Dep Night 0.0 4.8 20.5 0.0 0.0 10.3 1.9 20.2 3.7 0.0 13.3 0.0 74.7 
Arr Day 29.9 170.3 0.0 0.0 0.1 2.5 131.2 2.0 79.4 11.4 21.9 1.6 450.3 
Arr Night 1.2 27.5 0.0 0.0 0.0 0.9 34.0 0.0 13.2 0.0 14.2 0.0 91.0 
Total Daily
Operations 43.3 230.9 183.1 0.0 0.1 22.5 176.2 173.2 111.0 11.4 129.3 1.6 1082.6 
2023 Annual Operations Counts 
Dep Day 4,463 10,305 59,33
3 11 0 3,238 3,325 55,147 5,340 0 29,156 0 170,318 
Dep Night 16 1,759 7,477 0 0 3,750 683 7,367 1,365 0 4,838 0 27,255 
Arr Day 10,896 62,159 5 0 30 897 47,894 713 28,982 4,168 8,009 592 164,346 
Arr Night 439 10,046 0 0 0 315 12,423 8 4,811 0 5,183 1 33,227 
Total
Annual
Operations 
15,814 84,269 66,815 11 30 8,200 64,326 63,235 40,498 4,168 47,186 593 395,146 
2023 Percentage Operations 
Dep Day 3% 6% 35% <1% 0% 2% 2% 32% 3% 0% 17% 0% 100% 
Dep Night <1% 6% 27% 0% 0% 14% 3% 27% 5% 0% 18% 0% 100% 
Arr Day 7% 38% <1% 0% <1% 1% 29% <1% 18% 3% 5% <1% 99.2% 
Arr Night 1% 30% 0% 0% 0% 1% 37% <1% 14% 0% 16% <1% 100% 
Source: Massport radar data; HMMH, 2025. 
Notes: These data reflect actual counts or percentages of aircraft operations on each runway end. They should not be confused with effective runway
use, which weights nighttime operations by a factor of 10. Values may not add to 100 percent due to rounding.
Arr – Arrivals
Dep – Departures 
1 Runway 14-32 is unidirectional: there are no arrivals to Runway 14 and no departures from Runway 32. Noise Supporting Documentation I-24

Boston Logan International Airport 2023/2024 EDR I 
Runway use can also be presented in terms of percent of total operations. Table I-13 presents the 2022,
2023 and 2024 runway use for all operations which use Logan Airport. For 2022, Runways 22L and 22R
were the most active, with 22R handling the most departures and 22L handling the most arrivals. In 2023
and 2024, the most active departure runway was Runway 9 and the most active arrival runway was
Runway 4R. 
Table I-12 Summary of Jet and Non-Jet Aircraft Runway Use, 2022 
Runway 
4L 4R 9 14 1 15L 15R 22L 22R 27 32 1 33L 33R Total 
2022 Daily Operations Counts 
Dep Day 9.8 18.7 122.0 0.0 0.0 9.7 8.4 160.4 26.0 0.0 102.3 0.0 457.2 
Dep Night 0.0 2.2 11.9 0.0 0.0 13.7 0.9 13.9 4.4 0.0 14.5 0.0 61.5 
Arr Day 21.9 123.5 0.0 0.0 0.0 3.7 136.6 1.9 99.4 16.2 32.1 1.3 436.6 
Arr Night 0.1 14.9 0.0 0.0 0.0 1.0 32.7 0.0 13.5 0.0 19.7 0.0 82.0 
Total Daily
Operations 31.7 159.4 133.9 0.0 0.0 28.1 178.6 176.2 143.2 16.2 168.6 1.3 1,037.3 
2022 Annual Operations Counts 
Dep Day 3,564 6,827 44,525 0 0 3,545 3,060 58,541 9,478 0 37,327 0 166,867 
Dep Night 10 813 4,342 0 0 4,996 321 5,060 1,604 0 5,292 0 22,440 
Arr Day 7,977 45,083 0 0 0 1,337 49,871 710 36,283 5,912 11,729 473 159,376 
Arr Night 21 5,444 0 0 0 382 11,952 9 4,920 1 7,200 2 29,931 
Total
Annual
Operations 
11,573 58,166 48,867 0 0 10,261 65,204 64,321 52,285 5,913 61,548 475 378,613 
2022 Percentage Operations 
Dep Day 2% 4% 27% 0% 0% 2% 2% 35% 6% 0% 22% 0% 100% 
Dep Night <1% 4% 19% 0% 0% 22% 1% 23% 7% 0% 24% 0% 100% 
Arr Day 5% 28% 0% 0% 0% 1% 31% <1% 23% 4% 7% <1% 99.3% 
Arr Night <1% 18% 0% 0% 0% 1% 40% <1% 16% <1% 24% <1% 100% 
Source: Massport radar data; HMMH, 2023. 
Notes: These data reflect actual counts or percentages of aircraft operations on each runway end. They should not be confused with effective runway
use, which weights nighttime operations by a factor of 10. Values may not add to 100 percent due to rounding.
Arr – Arrivals
Dep – Departures 
1 Runway 14-32 is unidirectional: there are no arrivals to Runway 14 and no departures from Runway 32. Noise Supporting Documentation I-25

I Boston Logan International Airport 2023/2024 EDR 
Table I-13 Total Modeled Runway Use by All Operations, 2022-2024 
Runway Jet Arrivals Non-Jet Arrivals Jet Departures Non-Jet 
Departures All 
Operations 
Day Night Day Night Day Night Day Night 
2024 Operations 
4L 1.4% <0.1% 1.2% <0.1% 0.0% 0.0% 1.0% <0.1% 3.6% 
4R 13.1% 2.1% 1.1% <0.1% 1.6% 0.2% 0.5% <0.1% 18.5% 
9 0.0% 0.0% <0.1% 0.0% 12.8% 1.6% 1.2% <0.1% 15.7% 
14 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 
15L 0.0% 0.0% <0.1% 0.0% 0.0% 0.0% 0.0% 0.0% <0.1% 
15R 0.2% 0.1% 0.1% <0.1% 0.8% 0.9% 0.1% <0.1% 2.1% 
22L 9.4% 2.7% 1.4% <0.1% 0.4% 0.1% <0.1% 0.0% 14.1% 
22R <0.1% 0.0% 0.1% <0.1% 10.7% 1.8% 1.6% <0.1% 14.2% 
27 7.2% 1.3% 0.2% <0.1% 4.0% 1.2% 0.4% <0.1% 14.3% 
32 0.9% 0.0% 0.7% 0.0% 0.0% 0.0% 0.0% 0.0% 1.6% 
33L 3.9% 2.1% 0.5% <0.1% 7.4% 1.0% 0.8% <0.1% 15.6% 
33R 0.0% 0.0% 0.3% 0.0% 0.0% 0.0% 0.0% 0.0% 0.3% 
Total 36.0% 8.3% 5.6% 0.1% 37.7% 6.7% 5.6% 0.1% 100.0% 
2023 Operations 
4L 1.7% 0.1% 1.1% <0.1% 0.0% 0.0% 1.1% <0.1% 4.0% 
4R 14.5% 2.5% 1.2% <0.1% 2.3% 0.4% 0.3% <0.1% 21.3% 
9 0.0% 0.0% <0.1% 0.0% 13.9% 1.9% 1.1% <0.1% 16.9% 
14 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% <0.1% 0.0% <0.1% 
15L 0.0% 0.0% <0.1% 0.0% 0.0% 0.0% 0.0% 0.0% <0.1% 
15R 0.1% 0.1% 0.1% <0.1% 0.7% 0.9% 0.1% <0.1% 2.1% 
22L 10.7% 3.1% 1.4% <0.1% 0.8% 0.2% <0.1% <0.1% 16.3% 
22R <0.1% 0.0% 0.2% <0.1% 12.2% 1.8% 1.7% <0.1% 16.0% 
27 6.9% 1.2% 0.4% <0.1% 1.2% 0.3% 0.2% <0.1% 10.2% 
32 0.7% 0.0% 0.4% 0.0% 0.0% 0.0% 0.0% 0.0% 1.1% 
33L 1.9% 1.3% 0.1% <0.1% 6.9% 1.2% 0.5% <0.1% 11.9% 
33R 0.0% 0.0% 0.1% <0.1% 0.0% 0.0% 0.0% 0.0% 0.2% 
Total 36.5% 8.3% 5.1% 0.1% 38.0% 6.8% 5.1% 0.1% 100.0% 
2022 Operations 
4L 1.1% <0.1% 1.0% <0.1% 0.0% 0.0% 0.9% <0.1% 3.0% 
4R 11.1% 1.4% 0.8% <0.1% 1.4% 0.2% 0.4% <0.1% 15.4% Noise Supporting Documentation I-26

Boston Logan International Airport 2023/2024 EDR I 
Table I-13 Total Modeled Runway Use by All Operations, 2022-2024 
Runway Jet Arrivals Non-Jet Arrivals Jet Departures Non-Jet 
Departures All 
Operations 
Day Night Day Night Day Night Day Night 
9 0.0% 0.0% 0.0% 0.0% 10.9% 1.1% 0.9% <0.1% 12.9% 
14 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 
15L 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 
15R 0.2% 0.1% 0.1% <0.1% 0.8% 1.3% 0.1% <0.1% 2.7% 
22L 11.5% 3.1% 1.7% <0.1% 0.8% 0.1% <0.1% <0.1% 17.2% 
22R <0.1% <0.1% 0.2% <0.1% 13.5% 1.3% 2.0% <0.1% 17.0% 
27 9.1% 1.3% 0.5% <0.1% 2.3% 0.4% 0.2% <0.1% 13.8% 
32 0.9% 0.0% 0.6% <0.1% 0.0% 0.0% 0.0% 0.0% 1.6% 
33L 2.8% 1.9% 0.3% <0.1% 9.0% 1.4% 0.9% <0.1% 16.3% 
33R 0.0% 0.0% 0.1% <0.1% 0.0% 0.0% 0.0% 0.0% 0.1% 
Total 36.7% 7.8% 5.4% 0.1% 38.7% 5.9% 5.4% 0.1% 100.0% 
Source: Massport radar data; HMMH, 2025. 
Notes: Night for noise modeling is defined as 10:00 PM to 7:00 AM. 
Nighttime runway restrictions are in effect from 11:00 PM to 6:00 AM. 
Values may not add to exactly 100 percent due to rounding. 
Table I-14 presents a historical summary of runway use by jets. Note that Logan Airport Noise Rules
prevent arrivals to Runway 22R and departures from Runway 4L by jet aircraft except under certain
circumstances. 
Table I-14 Summary of Jet Aircraft Runway Use, 1998, 2022-2024 
Runway 4L 4R 9 14 1 15R 22L 22R 27 32 1 33L 
2024 
Departures 0% 4% 33% 0% 4% 1% 28% 12% 0% 19% 
Arrivals 3% 34% 0% 0% 1% 27% <1% 19% 2% 13% 
2023 
Departures 0% 6% 35% 0% 4% 2% 31% 3% 0% 18% 
Arrivals 4% 38% 0% 0% <1% 31% <1% 18% 2% 7% 
2022 
Departures 0% 4% 27% 0% 5% 2% 33% 6% 0% 23% 
Arrivals 2% 28% 0% 0% 1% 33% <1% 23% 2% 11% Noise Supporting Documentation I-27

I Boston Logan International Airport 2023/2024 EDR 
Table I-14 Summary of Jet Aircraft Runway Use, 1998, 2022-2024 
Runway 4L 4R 9 14 1 15R 22L 22R 27 32 1 33L 
1998 
Departures 0% 8% 35% - 6% 5% 28% 14% N/A 5% 
Arrivals 2% 41% 0% - 2% 7% 0% 28% N/A 19% 
Source: Massport radar data; HMMH, 2025. 
Notes: These data reflect actual percentages of jet aircraft operations on each runway end. They should not be confused with effective runway use,
which weights nighttime operations by a factor of 10 so that use of a runway at night more closely reflects its effect on total noise exposure. 
Jet aircraft cannot use Runway 15L or 33R due to its length of only 2,557 feet.
Values may not add to exactly 100 percent due to rounding. 
1 Runway 14-32 opened in late November 2006. Runway 14-32 is unidirectional with no arrivals to Runway 14 and no departures from Runway 32. 
Since runway use plays a key role in determining the aircraft noise distribution in the Airport’s
environment, Massport also tracks the level of traffic off each runway end by combining counts of
operations that overfly the same general area. The total operations and percentages shown for 2022,
2023, and 2024 in Table I-15 represent the amount of activity experienced off each runway end for a
given year. Table I-16 presents the effective usage of each runway. 
Table I-15 Runway Usage by Runway End, 2022-2024 
Runway 
End Operation(s) 1 
2022 2023 2024 
Total 
Flights 
Percent of 
Total 2 
Total 
Flights 
Percent of 
Total 2 
Total 
Flights 
Percent of 
Total 2 
04L R4L A + R22R D 71,600 18.9% 73,850 18.7% 68,824 16.6% 
04R R4R A + R22L D 53,908 14.2% 76,213 19.3% 69,551 16.8% 
9 R9 A + R27 D 11,082 2.9% 6,709 1.7% 23,031 5.6% 
14 N/A 0 0.0% 0 0.0% 0 0.0% 
15L R15L A + R33R D 0 0.0% 30 0.0% 27 0.0% 
15R R15R A + R33L D 44,338 11.7% 35,206 8.9% 39,752 9.6% 
22L R22L A + R4R D 69,463 18.3% 72,382 18.3% 65,446 15.8% 
22R R22R A + R4L D 4,293 1.1% 5,200 1.3% 4,662 1.1% 
27 R27 A + R9 D 90,070 23.8% 100,604 25.5% 100,829 24.4% 
32 R32 A + R14 D 5,913 1.6% 4,179 1.1% 6,507 1.6% 
33L R33L A + R15R D 27,471 7.3% 20,180 5.1% 33,691 8.1% 
33R R33R A + R15L D 475 0.1% 593 0.2% 1,088 0.3% 
All 378,613 100.0% 395,146 100.0% 413,409 100.0% 
Source: Massport radar data; HMMH, 2025. 
Notes: N/A – not applicable. 
Runway 14-32 is unidirectional: there are no arrivals to Runway 14 and no departures from Runway 32. 
1 A: Arrivals; D: Departures. 
2 Percentages are rounded to the nearest tenth. Noise Supporting Documentation I-28

Boston Logan International Airport 2023/2024 EDR I 
Table I-16 Effective Jet Aircraft Runway Usage, 2022-2024 
Runway End 
2022 Effective Usage 2023 Effective Usage 2024 Effective Usage 
ARR DEP ARR DEP ARR DEP 
4R/4L 23.1% 3.6% 35.6% 6.3% 30.0% 3.5% 
9 0.0% 22.9% 0.0% 30.8% 0.0% 27.7% 
15R 0.9% 14.0% 0.6% 9.2% 0.8% 8.9% 
22L/22R 37.2% 29.2% 35.0% 31.3% 30.9% 28.0% 
27 19.1% 6.7% 15.9% 4.3% 16.9% 15.1% 
33L 18.9% 23.5% 12.4% 17.9% 20.7% 16.8% 
14 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 
32 0.8% 0.0% 0.6% 0.0% 0.7% 0.0% 
Source: Massport NOMS data; HMMH, 2025. 
I.1.3 Flight Tracks 
The AEDT pre-processor converts each radar track to an AEDT model track and then models the scaled
aircraft operation on that track. Table I-17 lists the number of flight tracks used in the noise modeling
process for 2022, 2023 and 2024. A statistical analysis of the flight tracks for each year is presented in 
Section I.1.3 . 
Table I-17 Total Count of Flight Tracks Modeled with AEDT, 2022-2024 
Runway 
4L 4R 9 14 15L 15R 22L 22R 27 32 33L 33R 
2024 
Departures 3,934 9,016 64,550 0 0 7,149 2,051 57,524 22,908 0 37,809 0 
Arrivals 10,696 67,160 1 0 27 1,621 55,864 496 35,777 6,488 26,371 1,065 
2023 
Departures 4,393 11,982 66,534 11 0 6,923 4,004 62,212 6,686 0 33,827 0 
Arrivals 11,304 71,905 5 0 30 1,186 60,096 725 33,643 4,158 13,140 599 
2022 
Departures 3,579 7,614 48,628 0 0 8,469 3,366 63,308 11,028 0 42,404 0 
Arrivals 7,975 50,215 0 0 0 1,696 61,458 715 40,937 5,892 18,817 474 
Source: Massport’s Noise and Operational Monitoring System (NOMS) data and HMMH, 2025 Noise Supporting Documentation I-29

I Boston Logan International Airport 2023/2024 EDR 
I.2 Annual Noise Model Results 
I.2.1 Noise Exposed Population 
Table I-18 presents the noise-exposed population by community. See User’s Guide, Section U7.4.1 for
further on this analysis. 
Table I-18 Noise-Exposed Population by Community, 1998, 2022-2024 
Year Census Data 75+ dB DNL 70-75 dB DNL 65-70 dB DNL 1 Total (65+) 60-65 dB DNL 
BOSTON 2 
1998 1990 58 580 10,877 11,515 52,201 
2022 2020 0 0 3,862 3,862 17,804 
2023 2020 0 7 3,215 3,222 19,224 
2024 2020 0 0 3,373 3,373 20,112 
CHELSEA 
1998 1990 0 0 0 0 9,222 
2022 2020 0 0 0 0 13,683 
2023 2020 0 0 0 0 12,684 
2024 2020 0 0 0 0 12,759 
REVERE 
1998 1990 0 0 3,168 3,168 2,132 
2022 2020 0 0 3,416 3,416 3,904 
2023 2020 0 0 4,000 4,000 4,134 
2024 2020 0 0 3,371 3,371 3,900 
WINTHROP 
1998 1990 519 1,522 6,572 8,613 6,507 
2022 2020 0 27 880 907 4,848 
2023 2020 0 205 1,370 1,575 6,427 
2024 2020 0 192 1,044 1,236 5,677 
All Communities 
1998 1990 577 2,102 20,617 23,296 70,062 
2022 2020 0 27 8,158 8,185 40,239 
2023 2020 0 212 8,585 8,797 42,469 
2024 2020 0 192 7,788 7,980 42,448 
Source: HMMH, 2025. 
Notes: The communities of Everett, Medford, and Quincy had no noise exposure population at or above 60 dB DNL for the years shown. 
dB decibel; 
DNL Day-Night Average Sound Level; 
1 65 dB DNL is the federally defined noise criterion for residential incompatibility with aircraft noise (if not sound-insulated). 
2 Boston includes portions of Dorchester, East Boston, Roxbury, South Boston, and the South End. Noise Supporting Documentation I-30

Boston Logan International Airport 2023/2024 EDR I 
I.2.2 Cumulative Noise Index (CNI) 
The Logan Airport Noise Rules define Cumulative Noise Index (CNI) in terms of Effective Perceived
Noise Level (EPNL) and established a CNI limit of 156.5 Effective Perceived Noise Decibels (EPNdB). In
addition, Massport calculates and reports partial CNI values for various subsets of the Logan Airport fleet
as shown in Table I-19 . For more on CNI, the User’s Guide, Section U7.4.2 . 
Table I-19 Cumulative Noise Index (CNI) Effective Perceived Noise Level (EPNL), 1998, 2022-
2024 (limit 156.5) 
1998 2022 2023 2024 
Full CNI (Entire Commercial Jet Fleet) 154.7 152.8 153.4 153.6 
Total Passenger Jets 153.7 152.5 153.0 153.3 
Total Cargo Jets 147.9 142.2 142.9 142.7 
Total Daytime 150.4 147.6 147.9 148.1 
Total Nighttime 152.7 151.3 152.0 152.2 
Daytime Passenger 150.1 147.4 147.8 148.0 
Nighttime Passenger 151.2 150.8 151.5 151.7 
Daytime Cargo 138.0 134.3 133.1 132.9 
Nighttime Cargo 147.5 141.4 142.5 142.2 
Source: HMMH, 2025. 
Table I-20 shows the relative contribution of each airline to total CNI. The table provides the number of
flight operations, the contribution to CNI by airline, and the partial CNI per operation for 2022, 2023 and
2024, sorted by the partial CNI per operation for 2024. The data reflect the contributions of individual
aircraft noise levels and the frequency with which they occur. For example, JetBlue Airways, with the
largest number of operations, typically has a higher total CNI per airline, but its partial CNI per operation
is often below the other major airlines, partly due to its use of newer, quieter aircraft. 
Regional carriers generally contribute the least to the partial CNI per operation whereas international and
cargo carriers, which typically operate larger aircraft and generally have more operations at night, are
usually at the top of the list. The relative positions for the domestic carriers are due mainly to their fleet
characteristics and number of night operations. For more information on CNI, see User’s Guide, Section
U7.4.2 . Noise Supporting Documentation I-31

I Boston Logan International Airport 2023/2024 EDR 
Table I-20 Annual Operations and Partial CNI by Airline and per Operation, 2022-2024 
Airlines Airline 
Group 
Operations Total Airline CNI 
(EPNdB) 
Partial CNI (EPNdB) 
per Operation 
2022 2023 2024 2022 2023 2024 2022 2023 2024 
El Al Israel
Airlines Ltd. 
International 164 284 338 129 131 131 107 106 106 
Federal Express Cargo 4,722 3,479 3,147 140 140 140 103 105 105 
United Parcel
Service 
Cargo 2,114 2,089 2,338 138 139 139 105 106 105 
ABX Air, Inc. Cargo 147 214 500 127 128 131 105 105 104 
Hawaiian Airlines Domestic 422 444 446 128 130 130 102 103 104 
British Airways International 1,703 2,002 1,981 135 135 135 102 102 102 
Emirates Airlines International 702 732 736 130 130 130 102 102 102 
Avianca International - 439 521 - 125 128 - 98 101 
Cathay Pacific International - 313 622 - 126 129 - 101 101 
Iberia Airlines Of
Spain 
International 696 940 1,089 128 129 130 100 99 100 
Alaska Airlines Domestic 4,404 5,019 5,119 135 136 136 98 99 99 
American
Airlines 
Domestic 41,255 32,623 34,938 144 144 145 98 99 99 
Delta Air Lines Domestic 46,893 58,538 58,176 146 147 147 99 99 99 
Frontier Airlines Domestic 1,489 1,039 2,914 130 125 134 98 95 99 
Lufthansa International 1,446 1,686 1,611 131 131 131 100 99 99 
Air Canada International 625 2,244 2,458 122 132 132 94 99 98 
Austrian Airlines International - - 242 - - 122 - - 98 
JetBlue Airways Domestic 91,803 97,486 93,703 147 148 147 97 98 98 
Southwest
Airlines 
Domestic 10,535 12,218 13,186 139 139 139 99 99 98 
Spirit Airlines Domestic 6,717 9,537 13,664 136 139 140 98 99 98 
Swiss Air International 804 1,044 1,054 127 128 128 98 98 98 
Turkish Airlines International 742 658 690 127 127 126 99 99 98 
United Airlines Domestic 22,123 24,764 24,716 142 142 142 98 98 98 
Aer Lingus International 1,910 2,034 2,049 130 130 130 97 97 97 Noise Supporting Documentation I-32

Boston Logan International Airport 2023/2024 EDR I 
Table I-20 Annual Operations and Partial CNI by Airline and per Operation, 2022-2024 
Airlines Airline 
Group 
Operations Total Airline CNI 
(EPNdB) 
Partial CNI (EPNdB) 
per Operation 
2022 2023 2024 2022 2023 2024 2022 2023 2024 
ITA Airlines International 484 506 478 124 124 124 97 97 97 
Korean Air Lines
Co., Ltd. 
International 366 618 732 122 125 126 96 97 97 
SATA
International
Airlines 
International 
648 750 962 126 126 127 98 98 97 
LATAM Airlines International - 316 312 - 121 121 - 96 97 
TAP - Air
Portugal 
International 965 1,250 1,302 127 128 128 97 97 97 
Virgin Atlantic International 670 727 1,108 127 128 128 99 99 97 
Air France International 961 972 1,137 125 126 127 95 96 96 
KLM Royal
Dutch Airlines 
International 364 348 364 125 123 122 99 98 96 
Qatar Airways International 728 726 872 126 125 126 97 97 96 
Sun Country
Airlines 
Domestic 416 472 557 120 121 123 94 94 96 
Condor
Flugdienst 
International 104 - 236 119 - 119 98 - 95 
Envoy Airlines Domestic 2,039 3,475 3,828 126 130 131 93 95 95 
Fly Play Corp International 453 696 648 121 124 123 95 95 95 
Icelandair International 1,450 1,390 1,496 128 127 127 96 96 95 
Republic Airlines Domestic 46,247 45,002 52,705 141 141 142 95 94 95 
TACA
International
Airlines, S.A. 
International 
- 186 459 - 117 122 - 94 95 
Allegiant Air Domestic 1,154 1,018 1,016 124 124 124 93 94 94 
Jazz Air Inc. International 4,166 2,906 2,929 132 130 129 96 95 94 
Scandinavian
Airlines 
International 389 544 664 121 122 123 95 95 94 
Aeromexico International - - 569 - - 121 - - 93 
COPA Airlines International 228 646 939 122 126 123 99 98 93 Noise Supporting Documentation I-33

I Boston Logan International Airport 2023/2024 EDR 
Table I-20 Annual Operations and Partial CNI by Airline and per Operation, 2022-2024 
Airlines Airline 
Group 
Operations Total Airline CNI 
(EPNdB) 
Partial CNI (EPNdB) 
per Operation 
2022 2023 2024 2022 2023 2024 2022 2023 2024 
Etihad Airways International - - 374 - - 119 - - 93 
WestJet Airlines International 144 164 200 115 116 116 94 94 93 
Bermudair
Limited 
International - 192 622 - 116 120 - 93 92 
Hainan Airlines International 312 117 92 
Japan Airlines International 730 730 732 121 121 121 92 92 92 
Piedmont
Airlines 
Domestic 2,955 2,700 2,678 125 125 127 91 90 92 
Amerijet
International 
Cargo - 293 - - 129 - - 105 - 
Endeavor Air Domestic 4,621 - - 130 - - 93 - - 
Kalitta Air Cargo 349 - - 127 - - 102 - - 
SkyWest Airlines Domestic 782 3,920 - 123 130 - 94 95 - 
Source: Massport; HMMH, 2025. 
Notes: This table only includes airlines with more than 100 flights in 2023 or 2024..Airlines with no operations or less than 100 operations at Logan
Airport in a given year are indicated by “-“ 
Operations for some carriers differ from those in Chapter 3, Activity Levels and Forecasting , and Chapter 8, Air Quality and Greenhouse Gas
Emissions , because this table only includes jet aircraft and not turboprops, and because it includes both scheduled and unscheduled air
carriers.
CNI: Cumulative Noise Index
EPNdB: Effective Perceived Noise Decibels 
I.2.3 Dwell and Persistence Reporting 
Dwell and Persistence are measured by the number of hours that a given location or area is subject to
jet aircraft overflights. Figure I-2 and Figure I-3 illustrate the annual hours of dwell and persistence by
runway end for 2022 through 2024. The data accounts for the time the runway configuration was in use
and does not necessarily represent operations on those runways. For more on dwell and persistence
reporting see User’s Guide Section U7.4.2 . Noise Supporting Documentation I-34

Boston Logan International Airport 2023/2024 EDR I 
Figure I-2 Comparison of Annual Hours of Dwell Exceedance by Runway End 
Source: HMMH, 2025. 
Figure I-3 Comparison of Annual Hours of Persistence Exceedance by Runway End 
Source: HMMH, 2025. 
0 
200 
400 
600 
800 
1,000 
1,200 
1,400 
1,600 
1,800 
2,000 
Rwy 4L & 4R
Arrivals 
Rwy 32 &
33L Arrivals 
Rwy 14 &
15R
Departures 
Rwy 22L
&22R
Departures 
Rwy 27
Departures 
Rwy 4L & 4R
Departures
and 22L &
22R Arrivals 
Rwy 9
Departures
and 27
Arrivals 
Rwy 33L
Departures
and 15R
Arrivals 
Annual Hours 
Runway End 
2019 2022 2023 2024 
0 
500 
1,000 
1,500 
2,000 
2,500 
3,000 
Rwy 4L & 4R
Arrivals 
Rwy 32 &
33L Arrivals 
Rwy 14 &
15R
Departures 
Rwy 22L
&22R
Departures 
Rwy 27
Departures 
Rwy 4L & 4R
Departures
and 22L &
22R Arrivals 
Rwy 9
Departures
and 27
Arrivals 
Rwy 33L
Departures
and 15R
Arrivals 
Annual Hours 
Runway End 
2019 2022 2023 2024 Noise Supporting Documentation I-35

I Boston Logan International Airport 2023/2024 EDR 
I.2.4 Time Above (TA) and Time Above Night (TAN) 
Table I-21 and Table I-22 present a summary of the AEDT-calculated Time Above (TA) values for 2022,
2023, and 2024 at each of the monitor locations. For more on Time Above, see the User’s Guide, Section
U7.4.4 . 
Table I-21 Time Above (TA) dBA Thresholds in a 24-Hour Period for Average Day, 2022–2024 
Site 1 Distance 
(mi) 2 
Minutes above Threshold Modeled DNL (dB) 3 
2022 2023 2024 
2022 2023 2024 85 
dBA 
75 
dBA 
65 
dBA 
85 
dBA 
75 
dBA 
65 
dBA 
85 
dBA 
75 
dBA 
65 
dBA 
1 3.7 0.0 0.0 6.8 0.0 0.0 5.2 0.0 0.0 16.4 52.4 51.7 55.2 
2 2.9 0.0 0.9 11.3 0.0 0.7 6.8 0.0 2.6 20.9 56.2 54.8 59.5 
3 2.5 0.0 1.8 71.8 0.0 3.0 93.9 0.0 2.4 84.9 60.5 62.4 61.8 
4 1.6 8.1 41.0 97.0 8.8 46.1 106.2 9.5 46.0 106.0 71.2 72.2 72.2 
5 1.9 0.0 16.4 81.2 0.1 25.3 91.6 0.1 24.6 90.9 64.6 66.2 66.0 
6 0.8 0.0 0.9 53.8 0.0 2.0 82.4 0.0 1.3 76.4 61.7 62.4 61.9 
7 1.0 0.6 8.7 98.4 1.2 11.1 103.8 0.8 7.1 90.2 65.4 67.0 65.2 
8 1.6 0.0 3.2 42.5 0.0 5.9 45.6 0.0 3.9 38.2 61.2 62.9 61.4 
9 1.3 0.9 24.9 81.9 1.7 26.9 102.4 1.2 23.1 91.4 67.9 68.9 67.9 
10 1.3 0.0 4.6 50.0 0.1 7.6 57.7 0.0 5.3 49.7 61.8 63.1 61.7 
11 1.8 0.0 0.8 12.1 0.0 1.5 17.3 0.0 1.3 13.5 56.7 57.8 56.7 
12 1.2 0.0 9.3 90.9 0.0 9.3 104.2 0.0 10.5 99.7 64.7 64.7 64.5 
13 1.9 0.0 12.8 50.2 0.1 12.3 36.2 0.1 13.6 40.0 64.2 63.7 63.9 
14 1.2 0.0 0.2 47.0 0.0 0.2 60.9 0.0 0.1 71.9 60.2 60.1 60.8 
15 2.8 0.0 4.5 39.4 0.0 4.8 31.1 0.0 5.6 33.4 61.1 60.6 61.0 
16 2.4 0.9 25.4 57.1 0.9 26.6 58.7 0.8 23.5 52.0 68.7 69.2 68.6 
17 5.3 0.0 1.0 52.7 0.0 1.0 55.8 0.0 0.9 49.9 61.0 61.5 60.9 
18 5.9 0.0 0.0 0.2 0.0 0.0 0.5 0.0 0.0 0.3 45.0 46.8 45.0 
19 8.7 0.0 0.0 0.3 0.0 0.0 0.6 0.0 0.0 0.5 44.7 46.4 44.4 
20 8.4 0.0 0.0 12.8 0.0 0.0 15.9 0.0 0.0 14.5 55.5 55.9 55.5 
21 4.5 0.0 0.0 14.1 0.0 0.0 14.6 0.0 0.0 15.3 54.8 54.1 54.0 Noise Supporting Documentation I-36

Boston Logan International Airport 2023/2024 EDR I 
Table I-21 Time Above (TA) dBA Thresholds in a 24-Hour Period for Average Day, 2022–2024 
Site 1 Distance 
(mi) 2 
Minutes above Threshold Modeled DNL (dB) 3 
2022 2023 2024 
2022 2023 2024 85 
dBA 
75 
dBA 
65 
dBA 
85 
dBA 
75 
dBA 
65 
dBA 
85 
dBA 
75 
dBA 
65 
dBA 
22 6 0.0 0.1 10.1 0.0 0.1 9.9 0.0 0.1 11.8 53.8 53.1 53.1 
23 6.3 0.0 0.0 18.4 0.0 0.0 29.4 0.0 0.0 27.7 54.7 57.0 56.4 
24 8.1 0.0 0.0 6.3 0.0 0.0 10.8 0.0 0.0 10.0 52.9 55.0 54.5 
25 4.2 0.0 0.0 0.1 0.0 0.0 0.2 0.0 0.0 0.2 48.9 50.1 49.4 
26 6 0.0 0.0 22.7 0.0 0.0 21.2 0.0 0.0 24.0 58.3 57.3 58.0 
27 5.3 0.0 0.0 5.8 0.0 0.0 3.6 0.0 0.0 13.0 50.9 49.2 54.2 
28 7.7 0.0 0.0 1.5 0.0 0.0 1.1 0.0 0.0 4.2 47.9 46.2 51.3 
29 7.3 0.0 0.0 0.2 0.0 0.0 0.2 0.0 0.0 0.4 45.4 44.5 49.0 
30 1.5 0.0 0.1 10.4 0.0 0.1 11.3 0.0 0.1 19.1 57.3 57.0 57.8 
Average TA
Value 4 0.4 5.2 34.9 0.4 6.2 39.3 0.4 5.7 38.9 57.6 58.0 58.4 
Source: HMMH, 2025. 
Notes: 
dBA A-weighted decibel; 
DNL Day-Night Average Sound Level. 
1 Site numbers correlate with the Figure 7-13 map and the addresses listed in Table 7-2 in Section 7.3.3 in Chapter 7 of the EDR. 
2 Distance from Logan Airport calculated from the Airport Reference Point. 
3 2022 DNL is modeled with AEDT version 3e and 2023 and 2024 data is modeled with version 3g. 
4 Arithmetic average includes all 30 noise monitoring sites.

I Boston Logan International Airport 2023/2024 EDR 
Table I-22 Time Above (TA) dBA Thresholds in a Nine Hour Night Period for Average Day,
2022-2024 3 
Site 1 Distance 
(mi) 2 
Minutes above Threshold Modeled DNL (dB) 3 
2022 2023 2024 2022 2023 2024 
85 
dBA 
75 
dBA 
65 
dBA 
85 
dBA 
75 
dBA 
65 
dBA 
85 
dBA 
75 
dBA 
65 
dBA 
1 3.7 0.0 0.0 0.7 0.0 0.0 1.2 0.0 0.0 3.7 52.4 51.7 55.2 
2 2.9 0.0 0.1 1.2 0.0 0.2 1.4 0.0 0.6 4.6 56.2 54.8 59.5 
3 2.5 0.0 0.2 9.9 0.0 0.2 12.6 0.0 0.1 10.9 60.5 62.4 61.8 
4 1.6 1.2 5.7 13.2 1.3 6.0 14.8 1.4 5.8 14.1 71.2 72.2 72.2 
5 1.9 0.0 2.0 11.0 0.0 3.2 11.9 0.0 2.9 11.4 64.6 66.2 66.0 
6 0.8 0.0 0.1 6.7 0.0 0.3 13.0 0.0 0.2 11.3 61.7 62.4 61.9 
7 1 0.1 1.1 13.1 0.2 1.8 17.5 0.1 0.9 14.6 65.4 67.0 65.2 
8 1.6 0.0 0.4 5.9 0.0 1.0 9.1 0.0 0.5 7.2 61.2 62.9 61.4 
9 1.3 0.1 3.5 11.3 0.3 5.5 18.0 0.1 4.5 15.3 67.9 68.9 67.9 
10 1.3 0.0 0.6 6.8 0.0 1.0 10.8 0.0 0.5 8.2 61.8 63.1 61.7 
11 1.8 0.0 0.1 1.5 0.0 0.1 2.2 0.0 0.1 1.2 56.7 57.8 56.7 
12 1.2 0.0 1.1 11.3 0.0 1.8 16.8 0.0 1.7 14.7 64.7 64.7 64.5 
13 1.9 0.0 1.5 6.0 0.0 2.1 5.6 0.0 1.9 5.1 64.2 63.7 63.9 
14 1.2 0.0 0.0 5.8 0.0 0.0 9.9 0.0 0.0 12.6 60.2 60.1 60.8 
15 2.8 0.0 0.5 4.8 0.0 0.9 4.8 0.0 1.0 4.2 61.1 60.6 61.0 
16 2.4 0.1 3.7 8.3 0.2 5.6 11.9 0.1 4.8 10.1 68.7 69.2 68.6 
17 5.3 0.0 0.1 7.7 0.0 0.2 11.9 0.0 0.2 10.3 61.0 61.5 60.9 
18 5.9 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 45.0 46.8 45.0 
19 8.7 0.0 0.0 0.0 0.0 0.0 0.1 0.0 0.0 0.0 44.7 46.4 44.4 
20 8.4 0.0 0.0 1.9 0.0 0.0 4.2 0.0 0.0 3.8 55.5 55.9 55.5 
21 4.5 0.0 0.0 1.7 0.0 0.0 2.5 0.0 0.0 2.2 54.8 54.1 54.0 
22 6 0.0 0.0 1.2 0.0 0.0 1.7 0.0 0.0 1.6 53.8 53.1 53.1 
23 6.3 0.0 0.0 2.7 0.0 0.0 4.9 0.0 0.0 4.0 54.7 57.0 56.4 
24 8.1 0.0 0.0 0.9 0.0 0.0 1.7 0.0 0.0 1.4 52.9 55.0 54.5 Noise Supporting Documentation I-38

Boston Logan International Airport 2023/2024 EDR I 
25 4.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 48.9 50.1 49.4 
26 6 0.0 0.0 3.2 0.0 0.0 5.1 0.0 0.0 6.2 58.3 57.3 58.0 
27 5.3 0.0 0.0 0.6 0.0 0.0 0.8 0.0 0.0 3.0 50.9 49.2 54.2 
28 7.7 0.0 0.0 0.2 0.0 0.0 0.3 0.0 0.0 1.1 47.9 46.2 51.3 
29 7.3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 45.4 44.5 49.0 
30 1.5 0.0 0.0 1.3 0.0 0.0 2.4 0.0 0.0 4.0 57.3 57.0 57.8 
Average TA
Value 5 0.1 0.7 4.6 0.1 1.0 6.6 0.1 0.9 6.2 57.6 58.0 58.4 
Source: HMMH, 2025 
Notes: dBA: A-weighted decibel;
DNL: Day-Night Average Sound Level. 
1 Site numbers correlate with the Figure 7-13 map and the addresses listed in Table 7-2 in Section 7.3.3 in Chapter 7 of the EDR. 
2 Distance from Logan Airport calculated from the Airport Reference Point. 
3 Nine-hour nighttime period from 10:00 PM – 7:00 AM. 
4 2022 DNL is modeled with AEDT version 3e and 2023 and 2024 data is modeled with version 3g. 
5 Arithmetic average includes all 30 noise monitoring sites. 
I.3 Status of Mitigation Programs 
I.3.1 Residential Sound Insulation Program 
As discussed in Chapter 7, Noise , Section 7.4.2 Massport has been working to restart its residential
sound insulation program (RSIP) . In 2023 and 2024, no new dwelling units received sound insulation
from Massport. The total for residential buildings remains at 5,467 and 11,515 for dwelling units. Future
EDR’s will provide updates to the number of units added. 
I.3.2 Noise Complaints 
Table I-23 presents a detailed list by community of the total noise complaints made in 2022, 2023 and
2024, which can be filed either on Massport’s Noise Complaint Line, through a form on Massport’s
website, or through the PublicVue flight track portal. Figure I-4 shows the complaints and complainants
data graphically. 
Table I-23 Noise Complaint Line Summary, 2022-2024 
Town Name 
2022 2023 2024 2022-2023 
Change in 
number of 
complaints 
2023-2024 
Change in 
number of 
complaints Complaints Complainants Complaints Complainants Complaints Complainants 
Allston 6 2 0 0 0 0 -6 0 
Arlington 11,276 58 7,695 31 7,521 27 -3,581 174 
Belmont 920 47 855 37 2,379 22 -65 -1,524 Noise Supporting Documentation I-39

I Boston Logan International Airport 2023/2024 EDR 
Table I-23 Noise Complaint Line Summary, 2022-2024 
Town Name 
2022 2023 2024 2022-2023 
Change in 
number of 
complaints 
2023-2024 
Change in 
number of 
complaints Complaints Complainants Complaints Complainants Complaints Complainants 
Beverly 36 5 9 4 12 5 -27 -3 
Billerica 0 0 0 0 1 1 0 -1 
Boston 430 29 401 21 990 9 -29 -589 
Boxford 1 1 0 0 0 0 -1 0 
Braintree 1,010 5 374 7 15 5 -636 359 
Brighton 1 1 0 0 2 2 -1 -2 
Brookline 2 2 5 4 4 2 3 1 
Burlington 0 0 0 0 1 1 0 -1 
Cambridge 1,214 68 2,149 33 2,220 42 935 -71 
Canton 4 3 5 5 3 3 1 2 
Charlestown 51 19 16 12 8 4 -35 8 
Chelmsford 1,093 1 1,982 1 3,521 1 889 -1,539 
Chelsea 103 35 38 16 36 19 -65 2 
Cohasset 571 4 326 3 548 2 -245 -222 
Danvers 39 2 36 4 12 3 -3 24 
Dedham 0 0 0 0 1 1 0 -1 
Dorchester 19 11 25 16 101 25 6 -76 
Dover 2 2 2 2 1 1 0 1 
Duxbury 23 1 0 0 0 0 -23 0 
East Boston 191 56 81 32 103 50 -110 -22 
Easton 12 1 9 1 0 0 -3 9 
Essex 1 1 2 2 1 1 1 1 
Everett 18 12 37 11 303 9 19 -266 
Framingham 28 2 15 1 15 1 -13 0 
Gloucester 30 1 4 1 5 5 -26 -1 
Grafton 1 1 0 0 0 0 -1 0 
Hamilton 3 3 8 6 0 0 5 8 
Hanover 0 0 0 0 5 1 0 -5 
Hanson 0 0 4 1 21 1 4 -17 
Hingham 6 4 2 2 3 3 -4 -1 
Holbrook 1 1 30 4 8 2 29 22 
Hopkinton 1 1 0 0 0 0 -1 0 
Hull 650 33 259 25 172 30 -391 87 
Hyde Park 7 2 6 4 16 5 -1 -10 
Ipswich 16 2 2 2 0 0 -14 2 
Jamaica Plain 224 30 130 22 355 72 -94 -225 Noise Supporting Documentation I-40

Boston Logan International Airport 2023/2024 EDR I 
Table I-23 Noise Complaint Line Summary, 2022-2024 
Town Name 
2022 2023 2024 2022-2023 
Change in 
number of 
complaints 
2023-2024 
Change in 
number of 
complaints Complaints Complainants Complaints Complainants Complaints Complainants 
Kingston 0 0 3 1 3 1 3 0 
Lawrence 332 1 6 1 0 0 -326 6 
Lexington 0 0 2 2 0 0 2 2 
Littleton 1 1 0 0 0 0 -1 0 
Lynn 72 18 54 14 33 6 -18 21 
Lynnfield 0 0 3 1 1 1 3 2 
Malden 3,265 9 2,660 11 1,525 11 -605 1,135 
Manchester 0 0 2 2 6 2 2 -4 
Marblehead 2,807 6 1,764 9 336 5 -1,043 1,428 
Marlborough 3 1 0 0 0 0 -3 0 
Marshfield 20 6 2 2 2 2 -18 0 
Medford 73,912 211 28,371 143 22,663 139 -45,541 5,708 
Melrose 1,008 2 408 1 123 1 -600 285 
Middleton 7 2 0 0 0 0 -7 0 
Millis 1 1 0 0 0 0 -1 0 
Milton 17,420 110 19,750 91 17,565 71 2,330 -2,185 
Nahant 134 26 71 22 30 15 -63 41 
Needham 1 1 0 0 0 0 -1 0 
Newington 153 2 61 1 154 1 -92 -93 
Newton 38 11 22 7 16 7 -16 6 
North Easton 19 1 276 1 0 0 257 276 
Norton 3 2 1 1 0 0 -2 1 
Norwell 7 2 2 1 0 0 -5 2 
Peabody 11 8 11 6 6 6 0 5 
Pembroke 0 0 0 0 1 1 0 -1 
Quincy 21 8 31 8 10 4 10 21 
Randolph 6 1 0 0 4 3 -6 -4 
Reading 2 2 2 2 0 0 0 2 
Revere 10,200 27 115 36 56 17 -10,085 59 
Roslindale 350 16 148 12 461 58 -202 -313 
Roxbury 1,586 6 354 5 684 17 -1,232 -330 
Salem 326 12 173 9 51 5 -153 122 
Scituate 4 3 6 5 3 3 2 3 
Sharon 0 0 4 2 39 10 4 -35 
Somerville 40,372 155 37,293 113 43,370 99 -3,079 -6,077 
South Boston 25 18 128 36 397 81 103 -269 Noise Supporting Documentation I-41

I Boston Logan International Airport 2023/2024 EDR 
Table I-23 Noise Complaint Line Summary, 2022-2024 
Town Name 
2022 2023 2024 2022-2023 
Change in 
number of 
complaints 
2023-2024 
Change in 
number of 
complaints Complaints Complainants Complaints Complainants Complaints Complainants 
South End 3,347 7 11,067 7 24,944 6 7,720 -13,877 
Stoneham 2 1 1 1 0 0 -1 1 
Stoughton 0 0 3 1 7 2 3 -4 
Swampscott 16 7 8 4 2 2 -8 6 
Upton 1 1 0 0 0 0 -1 0 
Vineyard Haven 0 0 0 0 2 1 0 -2 
Wakefield 30 1 1 1 0 0 -29 1 
Waltham 2 2 0 0 1 1 -2 -1 
Watertown 3,661 28 2,314 23 1,963 8 -1,347 351 
Wellesley 0 0 46 2 223 2 46 -177 
Wenham 479 5 121 4 88 2 -358 33 
West Roxbury 50 8 174 5 218 22 124 -44 
Weston 1 1 0 0 0 0 -1 0 
Westwood 1 1 0 0 5 1 -1 -5 
Weymouth 696 6 147 8 48 2 -549 99 
Whitman 1 1 0 0 0 0 -1 0 
Winchester 8,466 9 7,058 7 4,868 15 -1,408 2,190 
Winthrop 84,748 103 90,458 94 72,115 55 5,710 18,343 
Woburn 1,346 5 1,202 6 2,017 4 -144 -815 
Grand Total 272,943 1,301 218,830 1,018 212,423 1,044 -54,113 6,407 
Source: Massport and HMMH, 2025. Noise Supporting Documentation I-42

Boston Logan International Airport 2023/2024 EDR I 
Figure I-4 Noise Complaint Line Complaints and Complaintants by Year, 2022-2024 
Source: Massport and HMMH, 2025. 
I.4 Statistical Analyses of Flight Tracks 
The following sections present the data and analysis of jet aircraft departures from Runways 4R, 9, 15R,
22L, 22R, 27, and 33L through gates defined to capture the aircraft flight paths. The gates, shown in 
Figure I-5 through Figure I-10 , are virtual vertical planes bounded by geographic coordinates on each
end and floor and ceiling altitudes. The statistical analyses include summaries of the volume and
composition of departing flights crossing through each gate, or gate segment, and volume of flights
above or below a specified altitude in feet above mean sea level. Some analyses also evaluate flight
procedures by categorizing flight tracks that turn at a certain distance from the Distance Measuring
Equipment (DME), a navigational aid located on the eastern shoreline at BOS. These analyses are used to
evaluate the performance of flight procedures off each runway end. For more information on flight track
monitoring, jet departure gates, and Air Traffic Control (ATC) procedures, see User’s Guide Section
U7.6.1. 
0 
200 
400 
600 
800 
1,000 
1,200 
1,400 
0 
50,000 
100,000 
150,000 
200,000 
250,000 
2022 2023 2024 
Complaintants 
Complaints 
Complaints Complaintants Noise Supporting Documentation I-43

I Boston Logan International Airport 2023/2024 EDR 
I.4.1 Statistical Analyses
of Flight Tracks: Runway
4R 
Jet aircraft departures from Runway 4R
remain on runway heading until 4 DME and
then turn right, crossing the Nahant
causeway. The Nahant Gate monitors aircraft
after the first turn at 4 DME. The Swampscott
and Marblehead Gates monitor northbound
shoreline crossings, while the Hull 2, Hull 3,
and Cohasset Gates monitor southbound
shoreline crossings. 
Table I-24 shows Runway 4R departures for
2022 through 2024, with more than 99
percent “over the causeway”. Table I-25 
shows how many of the shoreline crossings
from Runway 4R were above 6,000 feet. 
Figure I-5 illustrates the gates analyzed for
Runway 4R. 
Table I-24 Runway 4R Nahant Gate Summary, 2022-2024 
Gate 
2022 2023 2024 
Tracks 
Through Gate 
Segment 
Percentage of 
Tracks 
Through Gate 
Segment 
Tracks 
Through Gate 
Segment 
Percentage of 
Tracks 
Through Gate 
Segment 
Tracks 
Through Gate 
Segment 
Percentage of 
Tracks 
Through Gate 
Segment 
North End of Gate 21 0.3% 52 0.5% 32 0.4% 
Over Causeway 6,081 99.4% 10,569 99.2% 7,150 99.3% 
South End of Gate 13 0.2% 37 0.3% 15 0.2% 
Total 6,115 100.0% 10,658 100.0% 7,197 100.0% 
Source: Massport; HMMH 2025 
Note: Some totals may not match due to rounding. Noise Supporting Documentation I-44

Boston Logan International Airport 2023/2024 EDR I 
Table I-25 Runway 4R Shoreline Crossings Above 6,000 Feet for 2022 through 2024 
Gate 
2022 2023 2024 
Tracks 
Through 
Gate 
Tracks 
Above 
6,000 ft 
Percentage 
Above 
6,000 ft 
Tracks 
Through 
Gate 
Tracks 
Above 
6,000 ft 
Percentage 
Above 
6,000 ft 
Tracks 
Through 
Gate 
Tracks 
Above 
6,000 ft 
Percentage 
Above 
6,000 ft 
Swampscott Gate 155 20 12.9% 306 43 14.1% 155 22 14.2% 
Marblehead Gate 2,333 2,291 98.2% 3,565 3,488 97.8% 2,593 2,535 97.8% 
Hull 2 Gate 333 333 100.0% 629 629 100.0% 379 379 100.0% 
Hull 3 Gate 814 814 100.0% 1,450 1,449 99.9% 873 872 99.9% 
Cohasset Gate 307 307 100.0% 491 490 99.8% 297 296 99.7% 
Total 3,942 3,765 95.5% 6,441 6,099 94.7% 4,297 4,104 95.5% 
Source: Massport, HMMH 2025 
Note: Some totals may not match due to rounding. Noise Supporting Documentation I-45

I Boston Logan International Airport 2023/2024 EDR 
I.4.2 Statistical Analyses of Flight Tracks - Runway 9 
Jets departing from Runway 9 maintain runway
heading and gain altitude before turning back
to cross the shoreline and proceed to their
destinations. The Winthrop 1 and Winthrop 2
gates monitor early turns for departures off
Runway 9. The Revere, Swampscott, or
Marblehead gates monitor northbound
shoreline crossings, while the Hull 2, Hull 3, or
Cohasset gates monitor southbound shoreline
crossings. 
Table I-26 shows how many tracks turned prior
to the BOS 2 DME, a point located two nautical
miles from the DME. Northbound turns before
BOS 2 DME pass through the Winthrop 1 Gate.
Southbound traffic would pass through the
Winthrop 2 Gate. Table I-27 shows the number
and percentages of Runway 9 departures above
6,000 feet when crossing the shoreline in 2022,
2023 and 2024. Figure I-6 illustrates the gates
analyzed for Runway 9. 
Table I-26 Runway 9 Gate Summary — Winthrop Gates 1 and 2, 2022-2024 
Gate 
2022 2023 2024 
Tracks 
Through 
Gate 
Percent 
Turning 
Before 
BOS 2 
DME 
Tracks 
Through 
Gate 
Percent 
Turning 
Before 
BOS 2 
DME 
Tracks 
Through 
Gate 
Percent Turning Before BOS 2 DME 
Winthrop 13 <0.1% 26 0.0% 31 0.0% 
Winthrop 12 <0.1% 46 0.1% 35 0.1% 
Neither 45,310 99.9% 61,989 99.9% 61,995 99.9% 
Total 45,335 100.0% 62,061 100.0% 62,061 100.0% 
Source: Massport, HMMH 2025 
Note: Some totals may not match due to rounding. Noise Supporting Documentation I-46

Boston Logan International Airport 2023/2024 EDR I 
Table I-27 Runway 9 Shoreline Crossings Above 6,000 Feet for 2022 through 2024 
Gate 
2022 2023 2024 
Tracks 
Through 
Gate 
Tracks 
Above 
6,000 ft 
Percentage 
Above 
6,000 ft 
Tracks 
Through 
Gate 
Tracks 
Above 
6,000 ft 
Percentage 
Above 
6,000 ft 
Tracks 
Through 
Gate 
Tracks 
Above 
6,000 ft 
Percentage 
Above 
6,000 ft 
Revere Gate 24 11 45.8% 40 19 47.5% 74 32 43.2% 
Swampscott Gate 773 715 92.5% 1,404 1,284 91.5% 990 900 90.9% 
Marblehead Gate 9,451 9,413 99.6% 13,605 13,561 99.7% 12,936 12,892 99.7% 
Hull 2 Gate 2,921 2,918 99.9% 3,826 3,819 99.8% 3,103 3,097 99.8% 
Hull 3 Gate 5,220 5,121 98.1% 7,380 7,241 98.1% 5,934 5,844 98.5% 
Cohasset Gate 14,971 14,959 99.9% 18,769 18,754 99.9% 18,510 18,497 99.9% 
Total 33,360 33,137 99.3% 45,024 44,678 99.2% 41,547 41,262 99.3% 
Source: Massport, HMMH 2025 
Note: Some totals may not match due to rounding. Noise Supporting Documentation I-47

I Boston Logan International Airport 2023/2024 EDR 
I.4.3 Statistical Analyses of Flight Tracks - Runway 15R 
After takeoff, Runway 15R departures turn left
approximately 30 degrees to avoid Hull, head
out over Boston Harbor, and return over the
shore through the Swampscott and
Marblehead Gates to the north, or through the
Hull 2, Hull 3, and Cohasset Gates to the south.
Massport uses the Hull 1 Gate to monitor
departures from Runway 15R as they make
their initial turn over Boston Harbor. 
The initial turn and success rate in avoidance of
Hull overflights is shown in Table I-28 . Table I-
29 shows the number and percentages of
Runway 15R departures above 6,000 feet when
crossing the shoreline in 2022, 2023, and 2024. 
Figure I-7 illustrates the gates analyzed for
Runway 15R. 
Table I-28 Runways 15R Hull 1 Gate Summary, 2022-2024 
Gate 
2022 2023 2024 
Tracks 
Through Gate 
Segment 
Percentage 
of Tracks 
Through Gate 
Segment 
Tracks 
Through Gate 
Segment 
Percentage 
of Tracks 
Through Gate 
Segment 
Tracks 
Through Gate 
Segment 
Percentage 
of Tracks 
Through Gate 
Segment 
North of Hull Peninsula 7,782 99.7% 6,310 99.8% 6,547 99.8% 
Over Hull 22 0.3% 11 0.2% 14 0.2% 
Total 7,804 100.0% 6,321 100.0% 6,561 100.0% 
Source: Massport; HMMH, 2025. 
Note: Some totals may not match due to rounding. Noise Supporting Documentation I-48

Boston Logan International Airport 2023/2024 EDR I 
Table I-29 Runway 15R Shoreline Crossings Above 6,000 Feet, 2022-2024 
Gate 
2022 2023 2024 
Tracks 
Through 
Gate 
Tracks 
Above 
6,000 ft 
Percentage 
Above 
6,000 ft 
Tracks 
Through 
Gate 
Tracks 
Above 
6,000 ft 
Percentage 
Above 
6,000 ft 
Tracks 
Through 
Gate 
Tracks 
Above 
6,000 ft 
Percentage 
Above 
6,000 ft 
Swampscott Gate 213 211 99.1% 246 245 99.6% 197 195 99.0% 
Marblehead Gate 1,737 1,734 99.8% 1,302 1,302 100.0% 1,210 1,209 99.9% 
Hull 2 Gate 15 14 93.3% 9 6 66.7% 13 12 92.3% 
Hull 3 Gate 230 207 90.0% 196 167 85.2% 116 95 81.9% 
Cohasset Gate 2,224 2,219 99.8% 1,268 1,267 99.9% 1,262 1,260 99.8% 
Total 4,419 4,385 99.2% 3,021 2,987 98.9% 2,798 2,771 99.0% 
Source: Massport; HMMH, 2025. 
Note: Some totals may not match due to rounding. 
I.4.4 Statistical Analyses of
Flight Tracks:
Runways 22R and 22L 
Jet aircraft departures from Runways 22R and
22L make a left turn, gain altitude over water,
and then turn to cross the shoreline before
proceeding. The Squantum 2 and Hull 1 Gates
monitor the turn to 140 degrees over Boston
Harbor and the passage north of Hull. The
shoreline gates monitor shoreline crossings, as
described for Runways 4R, 9, and 15R. 
Figure I-8 illustrates the gates analyzed for
Runway 22R and Runway 22L. 
Table I-30 shows the jet departures dispersion
from Runways 22R and 22L as they pass
through the Squantum 2 Gate. The Block 2
Runway 22L/22R Standard Instrument
Departure (SID) changes were published in
November 2023, resulting in an earlier turn
and the slight shift of tracks to the north
above Hull. The higher percentage of tracks
within the first segment of Squantum 2 Gate in
2024, shown in Table I-30 , and increase in the Noise Supporting Documentation I-49

I Boston Logan International Airport 2023/2024 EDR 
percentage of flight tracks North of Hull Peninsula in 2024, shown in Table I-31 shows the procedure is
working as intended. Table I-31 shows flights that avoided Hull, and Table I-32 shows Runway 22R and
22L departures above 6,000 feet when crossing the shoreline. 
Table I-30 Runways 22R and 22L Squantum 2 Gate 1 Summary, 2022-2024 
Gate Segment 
2022 2023 2024 
Tracks 
Through 
Gate 
Segment 
Percentage of 
Tracks 
Through Gate 
Segment 
Tracks 
Through 
Gate 
Segment 
Percentage of 
Tracks 
Through Gate 
Segment 
Tracks 
Through 
Gate 
Segment 
Percentage of 
Tracks 
Through Gate 
Segment 
0 - 12,000 ft
(Northernmost Segment) 3,854 6.6% 2,827 4.8% 11,134 21.2% 
12,000 - 14,000 ft 52,589 89.5% 53,321 90.4% 40,384 76.8% 
14,000 - 21,000 ft 2,296 3.9% 2,782 4.7% 1,032 2.0% 
21,000 - 27,000 ft
(Southernmost Segment) 31 0.1% 32 0.1% 21 0.0% 
Total 58,770 100.0% 58,962 100.0% 52,571 100.0% 
Source: Massport; HMMH, 2025. 
Notes: Some totals may not match due to rounding. 
1 The 27,000-foot-wide Squantum 2 Gate is divided into four segments, identified in this table by distance from the northernmost point. The first
segment of the 27,000-foot wide gate is the northernmost segment and is primarily over Boston Harbor. The subsequent segments extend
southward toward Quincy. 
Table I-31 Runways 22R and 22L Hull 1 Gate Summary, 2022-2024 
Gate Segment 
2022 2023 2024 
Tracks 
Through 
Gate 
Segment 
Percentage of 
Tracks 
Through Gate 
Segment 
Tracks 
Through 
Gate 
Segment 
Percentage of 
Tracks 
Through Gate 
Segment 
Tracks 
Through 
Gate 
Segment 
Percentage of 
Tracks 
Through Gate 
Segment 
North of Hull Peninsula 58,188 99.1% 58,300 99.1% 52,261 99.6% 
Over Hull 507 0.9% 554 0.9% 235 0.4% 
Total 58,695 100.0% 58,854 100.0% 52,496 100.0% 
Source: Massport; HMMH, 2025. 
Notes: Some totals may not match due to rounding. Noise Supporting Documentation I-50

Boston Logan International Airport 2023/2024 EDR I 
Table I-32 Runways 22R and 22L Shoreline Crossings Above 6,000 Feet, 2022-2024 
Gate 
2022 2023 2024 
Tracks 
Through 
Gate 
Tracks 
Above 
6,000 ft 
Percentage 
Above 
6,000 ft 
Tracks 
Through 
Gate 
Tracks 
Above 
6,000 ft 
Percentage 
Above 
6,000 ft 
Tracks 
Through 
Gate 
Tracks 
Above 
6,000 ft 
Percentage 
Above 
6,000 ft 
Revere Gate 91 90 98.9% 126 124 98.4% 78 76 97.4% 
Swampscott
Gate 1,429 1,425 99.7% 1,909 1,908 99.9% 1,293 1,290 99.8% 
Marblehead
Gate 13,290 13,285 100.0% 13,484 13,482 100.0% 11,812 11,803 99.9% 
Hull 2 Gate 34 31 91.2% 63 47 74.6% 55 45 81.8% 
Hull 3 Gate 3,705 3,623 97.8% 4,257 4,173 98.0% 3,237 3,163 97.7% 
Cohasset Gate 21,732 21,720 99.9% 19,989 19,977 99.9% 18,152 18,146 100.0% 
Total 40,281 40,174 99.7% 39,828 39,711 99.7% 34,627 34,523 99.7% 
Source: Massport; HMMH, 2025. 
Notes: Some totals may not match due to rounding. Noise Supporting Documentation I-51

I Boston Logan International Airport 2023/2024 EDR 
I.4.5 Statistical Analyses of Flight Tracks: Runway 27 
On September 15, 1996, the Federal Aviation
Administration (FAA) implemented a
departure procedure for Runway 27 called the
“WYLYY RNAV” procedure. Massport has been
providing on-going radar flight track data and
analysis to FAA with respect to the procedure. 
Figure I-9 illustrates the gates analyzed for
Runway 27. Gate A is closest to the airport, with
each subsequently labeled gate further from
the runway. The gates increase in width as the
distance is increased along the flight path,
together forming a noise abatement corridor. A
consistent percentage of traffic through each
gate means that flights are not entering the
corridor late or exiting the corridor too early. 
Table I-33 through Table I-35 presents the
conformance results for the Runway 27 corridor
for 2022 through 2024. As a result of
implementing the Block 1 and Block 2
procedures for departures from Runways 15R,
22L and 22R, the FAA made a change to the 
Area Navigation (RNAV) SIDs in late 2023,
modifying the heading of the first left turn for
aircraft departing Runway 27, which has resulted in flight paths largely missing the first two gates in 2024.
The original goal for the corridor was for at least 68 percent of aircraft to pass through all five gates; that
goal was achieved from 2012 to 2021. The recent heading modifications for Runway 27 departures have
resulted in the percent through the defined Runway 27 corridor dropping below 68 percent in 2022 and
2023. Because most aircraft now miss Gate A, the percent within the defined corridor for 2024 was about
2 percent, as demonstrated in Table I-33 . The FAA has been reviewing this change and has provided
updates to the Massport Community Advisory Committee (Massport CAC) . Noise Supporting Documentation I-52

Boston Logan International Airport 2023/2024 EDR I 
Table I-34 Runway 27 Corridor Percent of Tracks Through Each Gate, 2023 
Month 
Total # 
of 
Tracks 
Total # 
of Tracks 
Through 
All Gates 
Percent 
of Tracks 
Through 
All Gates 
Runway 27 Corridor Gates Average 
Percent 
Through 
Each 
Gate 
Gate A Gate B Gate C Gate D Gate E 
1,400 ft 2,200 ft 2,900 ft 4,700 ft 6,300 ft 
January 351 234 66.7% 246 271 339 346 337 87.7% 
February 883 586 66.4% 613 699 833 863 844 87.2% 
March 1,379 884 64.1% 902 1,033 1,301 1,350 1,329 85.8% 
April 549 344 62.7% 353 404 510 532 526 84.7% 
May 837 551 65.8% 568 616 798 827 810 86.5% 
June 427 280 65.6% 287 321 409 419 412 86.6% 
July 150 104 69.3% 108 117 146 146 142 87.9% 
August 28 20 71.4% 20 23 28 28 27 90.0% 
Table I-33 Runway 27 Corridor Percent of Tracks Through Each Gate, 2024 
Month 
Total # 
of 
Tracks 
Total # 
of Tracks 
Through 
All Gates 
Percent 
of Tracks 
Through 
All Gates 
Runway 27 Corridor Gates Average 
Percent 
Through 
Each 
Gate 
Gate A Gate B Gate C Gate D Gate E 
1,400 ft 2,200 ft 2,900 ft 4,700 ft 6,300 ft 
January 1,882 19 1.0% 23 234 1,694 1,858 1,840 60.0% 
February 2,088 29 1.4% 31 299 1,839 2,058 2,037 60.0% 
March 2,004 51 2.5% 61 350 1,930 2,152 2,133 66.1% 
April 1,322 41 3.1% 44 231 1,201 1,313 1,307 62.0% 
May 631 - 0.0% 15 91 550 620 - 40.4% 
June 911 23 2.5% 25 144 818 901 893 61.1% 
July 1,278 38 3.0% 44 195 1,147 1,270 1,257 61.2% 
August 1,578 42 2.7% 46 246 1,417 1,561 1,545 61.0% 
September 1,254 40 3.2% 42 196 1,135 1,244 1,234 61.4% 
October 2,651 69 2.6% 77 437 2,397 2,620 2,603 61.4% 
November 3,755 65 1.7% 80 667 3,363 3,728 3,678 61.3% 
December 2,075 25 1.2% 28 291 1,859 2,050 2,027 60.3% 
Total 21,429 442 2.1% 516 3,381 19,350 21,375 20,554 60.8% 
Source: Massport; HMMH, 2025. 
Notes: Some totals may not match due to rounding. Noise Supporting Documentation I-53

I Boston Logan International Airport 2023/2024 EDR 
Table I-34 Runway 27 Corridor Percent of Tracks Through Each Gate, 2023 
Month 
Total # 
of 
Tracks 
Total # 
of Tracks 
Through 
All Gates 
Percent 
of Tracks 
Through 
All Gates 
Runway 27 Corridor Gates Average 
Percent 
Through 
Each 
Gate 
Gate A Gate B Gate C Gate D Gate E 
1,400 ft 2,200 ft 2,900 ft 4,700 ft 6,300 ft 
September 15 5 33.3% 5 11 13 14 14 76.0% 
October 9 7 77.8% 7 7 7 7 7 77.8% 
November 9 3 33.3% 4 7 9 9 8 82.2% 
December 1,336 17 1.3% 22 166 1,174 1,320 1,312 59.8% 
Total 5,973 3,035 50.8% 3,135 3,675 5,567 5,861 5,768 80.4% 
Source: Massport; HMMH, 2025. 
Notes: Some totals may not match due to rounding. 
Table I-35 Runway 27 Corridor Percent of Tracks Through Each Gate, 2022 
Month 
Total # 
of 
Tracks 
Total # 
of Tracks 
Through 
All Gates 
Percent 
of Tracks 
Through 
All Gates 
Runway 27 Corridor Gates Average 
Percent 
Through 
Each 
Gate 
Gate A Gate B Gate C Gate D Gate E 
1,400 ft 2,200 ft 2,900 ft 4,700 ft 6,300 ft 
January 2,797 1,656 59.2% 1,685 1,929 2,467 2,587 2,577 80.4% 
February 1,316 726 55.2% 731 851 1,078 1,139 1,137 75.0% 
March 1,939 1,220 62.9% 1,231 1,421 1,827 1,926 1,921 85.9% 
April 1,568 887 56.6% 899 1,078 1,418 1,481 1,471 81.0% 
May 879 565 64.3% 578 651 827 867 857 86.0% 
June 630 384 61.0% 394 438 560 580 576 80.9% 
July 362 252 69.6% 258 276 344 354 351 87.5% 
August 4 4 100.0% 4 4 4 4 4 100.0% 
September 288 195 67.7% 199 221 278 287 283 88.1% 
October 132 77 58.3% 79 97 119 127 128 83.3% 
November 302 186 61.6% 189 224 289 300 298 86.1% 
December - - - - - - - - - 
Total 10,217 6,152 60.2% 6,247 7,190 9,211 9,652 9,603 82.0% 
Source: Massport; HMMH, 2023. 
Notes: Some totals may not match due to rounding. Noise Supporting Documentation I-54

Boston Logan International Airport 2023/2024 EDR I 
I.4.6 Statistical Analyses of Flight Tracks: Runway 33L 
Jets departing from Runway 33L fly in a
corridor along the north side of the Mystic
River until 5 DME or reaching an altitude of
3,000 feet and then turn on course to their
destinations. The Somerville and Everett Gates
extend from BOS 2 DME to BOS 5 DME and are
used to monitor the departure procedure for
Runway 33L. Early turns to the left would pass
through the Somerville Gate below 3,000 feet.
Early turns to the right would pass through the
Everett Gate below 3,000 feet. Table I-36 
shows tracks below 3,000 feet which turn
before BOS 5 DME. Figure I-10 illustrates the
gates analyzed for Runway 33L. 
Table I-36 Runway 33L Gates — Passages Below 3,000 Feet, 2022-2024 
Gate 
2022 2023 2024 
Tracks 
Through 
Gate 
Tracks 
Above 
3,000 
ft 
Tracks 
Below 
3,000 
ft 
% 
Below 
3,000 
ft 
Tracks 
Through 
Gate 
Tracks 
Above 
3,000 
ft 
Tracks 
Below 
3,000 
ft 
% 
Below 
3,000 
ft 
Tracks 
Through 
Gate 
Tracks 
Above 
3,000 
ft 
Tracks 
Below 
3,000 
ft 
% 
Below 
3,000 
ft 
Everett Gate 149 50 99 0.3% 103 24 79 0.2% 212 72 140 0.4% 
Somerville
Gate 
819 158 661 1.7% 713 115 598 1.9% 691 122 569 1.8% 
Neither
gate 
38,055 - - - 31,014 - - - 30,927 - - - 
Total 39,023 208 760 1.9% 31,830 139 677 2.1% 31,830 194 709 2.2% 
Source: Massport; HMMH, 2025. 
Notes: Some totals may not match due to rounding. Noise Supporting Documentation I-55

I Boston Logan International Airport 2023/2024 EDR 
I.5 2022 through 2024 DNL Levels for Census Block Group
Locations 
Table I-37 reports the DNL value for each Census Block Group down to DNL 50 dB, computed with AEDT
for 2023 and 2024. A Census Block Group represents several US Census Blocks. The Average Block DNL is
the arithmetic average of the DNL calculated for the centroid of each US Census Block in that group, while
the DNL at centroid represents the DNL calculated at the geographic center of the Block Group. 
Table I-37 DNL Values at U.S. Census 2020 Block Groups, 2022-2024 
Census Block 
Group ID Name Popul 
ation 
Housing 
Units 
2022 2023 2024 
Average 
Block 
DNL 
DNL at 
centroid 
Average 
Block 
DNL 
DNL at 
centroid 
Average 
Block 
DNL 
DNL at 
centroid 
250173561002 Arlington 1,482 691 50.0 50.1 49.5 49.6 49.6 49.7 
250173507023 Arlington/
Somerville 
866 421 50.2 49.8 49.6 49.2 49.6 49.2 
250250203021 Boston 407 273 N/A N/A 48.5 48.4 49.8 49.7 
250250203041 Boston 323 229 50.2 50.2 49.6 49.7 50.3 50.4 
250250203042 Boston 562 319 49.7 49.6 49.2 49.0 50.1 49.9 
250250301001 Boston 205 123 51.3 51.2 50.7 50.7 51.1 51.2 
250250301002 Boston 126 84 50.8 50.8 50.1 50.2 50.6 50.8 
250250302001 Boston 270 176 50.9 50.9 50.3 50.3 51.1 51.1 
250250302002 Boston 287 172 50.6 50.6 50.1 50.0 50.9 50.8 
250250303021 Boston 747 278 51.0 50.6 50.2 49.9 51.7 51.4 
250250304001 Boston 191 116 51.8 51.8 51.3 51.1 52.3 52.1 
250250304002 Boston 616 402 51.3 51.4 50.7 50.8 51.4 51.5 
250250304004 Boston 551 325 51.9 51.8 51.2 51.1 52.6 52.4 
250250305001 Boston 379 243 52.5 52.2 51.9 51.7 52.6 52.2 
250250305002 Boston 671 434 52.0 51.9 51.3 51.3 52.1 52.2 
250250305003 Boston 216 144 51.8 51.8 51.1 51.3 51.7 51.9 
250250401001 Boston 361 170 50.9 50.8 50.4 50.3 50.5 50.4 
250250401002 Boston 619 346 50.3 50.4 49.9 49.9 49.9 49.9 
250250402001 Boston 69 44 53.1 53.1 52.4 52.6 52.3 52.6 Noise Supporting Documentation I-56

Boston Logan International Airport 2023/2024 EDR I 
Table I-37 DNL Values at U.S. Census 2020 Block Groups, 2022-2024 
Census Block 
Group ID Name Popul 
ation 
Housing 
Units 
2022 2023 2024 
Average 
Block 
DNL 
DNL at 
centroid 
Average 
Block 
DNL 
DNL at 
centroid 
Average 
Block 
DNL 
DNL at 
centroid 
250250402002 Boston 262 79 51.8 51.8 51.3 51.3 51.3 51.3 
250250403001 Boston 238 108 52.1 52.0 51.5 51.5 51.4 51.4 
250250403002 Boston 774 349 51.1 50.9 50.6 50.4 50.5 50.3 
250250403003 Boston 529 260 51.2 51.2 50.5 50.7 50.4 50.6 
250250403004 Boston 394 193 51.6 51.7 51.0 51.2 50.8 51.0 
250250403005 Boston 244 104 50.6 50.6 50.2 50.1 50.0 49.9 
250250406001 Boston 383 218 50.9 51.2 50.3 50.7 50.1 50.5 
250250406002 Boston 1,019 499 51.0 51.1 50.5 50.6 50.3 50.4 
250250408011 Boston 681 338 52.4 52.5 51.9 52.0 51.8 51.9 
250250408013 Boston 1,517 967 52.8 53.4 52.1 52.9 52.1 52.9 
250250501011 Boston 280 83 62.7 62.8 63.7 62.4 63.8 62.5 
250250501012 Boston 1,259 596 59.9 59.7 59.6 59.3 59.7 59.3 
250250501013 Boston 1,036 380 61.6 61.8 60.6 61.3 60.6 61.3 
250250502001 Boston 915 349 60.1 60.2 59.5 59.6 59.4 59.6 
250250502002 Boston 905 414 59.1 59.2 58.0 58.6 58.0 58.6 
250250503001 Boston 885 555 56.7 56.1 56.2 55.6 56.3 55.6 
250250503002 Boston 413 137 55.6 55.5 55.1 55.0 55.2 55.2 
250250503003 Boston 841 654 55.1 55.1 54.7 54.5 55.1 54.9 
250250504001 Boston 81 21 56.3 56.3 56.0 55.8 56.3 56.0 
250250504002 Boston 115 64 56.8 56.9 55.9 56.3 56.5 56.8 
250250505001 Boston 1,648 774 58.9 59.0 58.4 58.4 58.5 58.5 
250250506001 Boston 92 30 58.2 58.2 57.5 57.6 57.5 57.6 
250250506002 Boston 516 224 57.1 57.5 56.5 56.9 56.6 57.1 
250250507001 Boston 1,403 517 59.3 59.5 58.8 58.9 58.8 58.9 
250250507002 Boston 994 350 61.5 61.4 60.7 60.7 60.7 60.7 
250250507003 Boston 659 244 62.9 62.6 61.4 61.9 61.4 61.9 Noise Supporting Documentation I-57

I Boston Logan International Airport 2023/2024 EDR 
Table I-37 DNL Values at U.S. Census 2020 Block Groups, 2022-2024 
Census Block 
Group ID Name Popul 
ation 
Housing 
Units 
2022 2023 2024 
Average 
Block 
DNL 
DNL at 
centroid 
Average 
Block 
DNL 
DNL at 
centroid 
Average 
Block 
DNL 
DNL at 
centroid 
250250509011 Boston 906 316 66.7 67.5 66.2 67.0 66.5 67.3 
250250509012 Boston 1,003 364 65.2 65.4 64.0 64.9 64.2 65.1 
250250509013 Boston 396 111 65.3 66.5 65.5 66.0 65.8 66.3 
250250510001 Boston 1,464 622 63.8 63.6 63.3 62.9 63.2 62.8 
250250510002 Boston 1,039 482 58.5 57.4 58.2 57.1 57.9 56.8 
250250510003 Boston 695 283 63.1 62.7 62.1 62.0 62.1 62.0 
250250511011 Boston 988 381 58.8 58.0 59.6 58.9 58.7 57.8 
250250511012 Boston 726 300 56.6 56.5 57.0 56.6 56.3 55.8 
250250511013 Boston 957 337 62.3 62.9 63.6 64.2 62.4 62.8 
250250511014 Boston 379 108 60.3 57.4 63.5 58.6 62.3 57.3 
250250512002 Boston 882 386 59.1 58.8 58.8 58.4 59.3 58.8 
250250512003 Boston 48 26 57.8 57.9 57.1 57.5 57.7 58.1 
250250601011 Boston 461 216 60.3 60.3 60.7 61.7 60.6 61.4 
250250601012 Boston 304 174 59.3 59.2 62.1 61.0 61.5 60.5 
250250601013 Boston 677 333 59.6 59.6 60.2 61.3 60.0 60.8 
250250601014 Boston 485 296 58.8 58.5 59.4 60.3 59.1 59.9 
250250602001 Boston 464 222 56.7 56.8 57.6 57.9 58.0 58.2 
250250602002 Boston 851 434 55.8 55.6 56.6 56.8 56.9 57.0 
250250603011 Boston 548 286 54.6 54.5 55.3 55.1 56.4 56.4 
250250603012 Boston 429 187 54.2 54.2 55.1 55.1 55.8 55.9 
250250603013 Boston 365 198 54.8 54.6 55.7 55.1 57.0 56.8 
250250604001 Boston 763 395 53.2 53.3 53.2 53.4 56.3 56.6 
250250604002 Boston 315 186 53.3 53.5 53.5 53.9 55.7 55.8 
250250604003 Boston 311 156 53.0 53.0 53.3 53.5 55.5 55.3 
250250604004 Boston 355 172 52.5 52.4 52.5 52.4 56.2 55.8 
250250604005 Boston 212 108 53.3 53.2 53.1 53.0 57.2 57.0 Noise Supporting Documentation I-58

Boston Logan International Airport 2023/2024 EDR I 
Table I-37 DNL Values at U.S. Census 2020 Block Groups, 2022-2024 
Census Block 
Group ID Name Popul 
ation 
Housing 
Units 
2022 2023 2024 
Average 
Block 
DNL 
DNL at 
centroid 
Average 
Block 
DNL 
DNL at 
centroid 
Average 
Block 
DNL 
DNL at 
centroid 
250250605011 Boston 358 199 55.8 55.8 56.2 56.2 57.5 57.8 
250250605013 Boston 346 207 54.6 54.6 54.3 54.5 58.0 57.9 
250250605014 Boston 400 183 57.7 57.4 58.2 58.2 59.0 58.8 
250250605015 Boston 272 130 54.6 54.6 54.1 54.2 58.7 58.7 
250250606011 Boston 743 453 55.5 55.6 54.7 54.7 59.8 59.9 
250250606031 Boston 942 786 59.5 60.0 58.0 58.3 62.8 63.3 
250250606041 Boston 127 102 57.5 60.8 55.9 59.1 59.4 63.7 
250250606042 Boston 432 532 56.5 56.4 54.7 54.7 58.1 58.1 
250250607001 Boston 388 137 55.4 55.4 54.2 54.2 59.1 59.1 
250250607002 Boston 129 46 55.0 55.0 53.9 53.8 59.0 58.7 
250250608001 Boston 235 98 53.9 53.9 53.3 53.4 58.1 58.1 
250250608002 Boston 517 265 53.9 53.9 53.2 53.3 58.1 58.2 
250250608003 Boston 224 100 54.8 54.8 53.9 54.0 59.0 59.2 
250250608004 Boston 596 355 54.2 54.3 53.1 53.3 58.1 58.4 
250250610001 Boston 327 166 53.0 53.0 52.5 52.6 57.0 57.1 
250250610002 Boston 13 4 52.7 52.6 52.3 52.2 56.8 56.7 
250250610003 Boston 474 233 52.5 52.5 52.0 52.0 56.7 56.7 
250250611011 Boston 137 57 51.9 51.9 51.2 51.4 55.7 56.1 
250250611012 Boston 556 261 51.2 51.1 50.8 50.7 55.3 55.1 
250250612011 Boston 1,186 625 53.1 53.8 52.1 52.7 57.1 57.8 
250250612031 Boston 561 314 55.5 55.4 54.0 53.9 58.3 58.0 
250250612041 Boston 343 256 56.4 56.0 54.9 54.4 58.8 58.3 
250250701021 Boston 362 183 50.3 50.2 49.4 49.3 51.2 51.1 
250250701031 Boston 751 379 53.3 53.2 51.7 51.7 54.5 54.6 
250250701041 Boston 303 164 53.6 54.1 52.0 52.5 54.8 55.5 
250250701042 Boston 255 126 52.5 52.4 51.3 51.3 53.6 53.6 Noise Supporting Documentation I-59

I Boston Logan International Airport 2023/2024 EDR 
Table I-37 DNL Values at U.S. Census 2020 Block Groups, 2022-2024 
Census Block 
Group ID Name Popul 
ation 
Housing 
Units 
2022 2023 2024 
Average 
Block 
DNL 
DNL at 
centroid 
Average 
Block 
DNL 
DNL at 
centroid 
Average 
Block 
DNL 
DNL at 
centroid 
250250701043 Boston 522 346 51.0 51.0 49.8 49.9 52.0 52.0 
250250702011 Boston 438 159 51.1 51.1 50.0 49.7 52.6 52.3 
250250702012 Boston 1,815 272 50.4 50.5 49.1 49.3 51.4 51.6 
250250702021 Boston 2,416 1,374 51.7 51.7 50.4 50.3 52.9 52.8 
250250702022 Boston 630 257 52.1 52.2 50.8 50.7 53.5 53.4 
250250703011 Boston 202 135 N/A N/A 48.0 48.1 50.4 50.5 
250250703012 Boston 561 294 50.1 50.1 48.4 48.7 50.9 51.3 
250250703021 Boston 155 91 50.1 50.0 48.9 48.8 51.3 51.2 
250250703022 Boston 3 1 N/A N/A 48.4 48.2 50.6 50.3 
250250704021 Boston 838 577 52.9 52.8 51.4 51.3 54.3 54.2 
250250704022 Boston 565 363 51.3 51.3 49.9 49.8 52.5 52.5 
250250705011 Boston 270 162 51.1 51.1 49.5 49.6 52.3 52.3 
250250705012 Boston 495 266 51.6 51.7 50.1 50.1 53.0 53.0 
250250705021 Boston 289 167 50.6 50.6 49.1 49.2 51.9 52.0 
250250705022 Boston 813 352 50.4 50.4 48.9 48.9 51.8 51.8 
250250706001 Boston 57 34 49.8 49.6 48.8 48.3 51.5 50.9 
250250706002 Boston 801 450 N/A N/A 47.8 47.7 50.5 50.4 
250250707001 Boston 38 20 N/A N/A 47.4 47.4 49.6 49.6 
250250707002 Boston 356 180 N/A N/A 47.3 47.3 49.7 49.7 
250250708021 Boston 302 221 N/A N/A 47.1 47.3 49.7 50.0 
250250709011 Boston 76 35 49.6 49.5 48.0 47.9 51.0 51.0 
250250709021 Boston 569 329 50.0 49.8 48.7 48.3 51.9 51.3 
250250709022 Boston 430 216 50.2 49.9 48.9 48.4 52.0 51.4 
250250711011 Boston 563 229 51.5 52.0 50.0 50.4 53.5 54.0 
250250711012 Boston 107 47 51.3 51.4 49.4 49.7 52.8 53.3 
250250711014 Boston 547 292 52.4 52.3 50.8 50.6 54.4 54.2 Noise Supporting Documentation I-60

Boston Logan International Airport 2023/2024 EDR I 
Table I-37 DNL Values at U.S. Census 2020 Block Groups, 2022-2024 
Census Block 
Group ID Name Popul 
ation 
Housing 
Units 
2022 2023 2024 
Average 
Block 
DNL 
DNL at 
centroid 
Average 
Block 
DNL 
DNL at 
centroid 
Average 
Block 
DNL 
DNL at 
centroid 
250250712011 Boston 123 60 52.3 52.3 50.6 50.7 53.7 53.7 
250250712012 Boston 687 367 53.1 53.3 51.6 51.7 55.0 55.2 
250250712013 Boston 13 255 52.7 52.7 50.6 51.1 53.9 54.5 
250250712014 Boston 396 181 51.6 51.7 50.3 50.1 53.4 53.2 
250250801001 Boston 375 106 52.6 52.9 51.1 51.3 55.7 56.0 
250250801002 Boston 171 65 52.0 52.0 50.4 50.3 55.1 55.1 
250250803001 Boston 424 180 51.9 51.8 50.0 50.1 54.2 54.4 
250250803002 Boston 740 292 51.3 51.4 49.6 49.6 53.8 53.9 
250250804011 Boston 475 237 50.8 50.9 49.0 49.1 52.6 52.8 
250250804012 Boston 920 519 N/A N/A 47.6 47.6 50.9 51.0 
250250805001 Boston 202 84 N/A N/A 47.6 47.1 50.8 50.1 
250250805002 Boston 832 405 N/A N/A 48.2 47.9 51.4 51.0 
250250806012 Boston 65 20 N/A N/A 47.0 46.5 50.3 49.6 
250250806013 Boston 215 131 N/A N/A 47.3 47.5 50.8 51.0 
250250813011 Boston 149 62 N/A N/A 47.5 47.5 52.0 52.0 
250250813012 Boston 458 157 N/A N/A 46.4 46.0 50.4 49.8 
250250813021 Boston 353 137 N/A N/A 47.6 47.6 52.2 52.1 
250250813022 Boston 947 420 N/A N/A 46.5 46.5 50.5 50.3 
250250814003 Boston 645 356 N/A N/A 47.0 47.1 50.6 50.7 
250250815001 Boston 549 218 N/A N/A 47.1 47.2 50.8 51.0 
250250815002 Boston 1,281 555 49.6 49.6 47.8 47.8 52.1 52.1 
250250817002 Boston 445 223 51.1 51.1 49.3 49.4 54.0 54.1 
250250817003 Boston 458 162 50.2 50.2 48.6 48.5 53.1 52.8 
250250817004 Boston 514 196 50.2 50.3 48.6 48.5 52.9 52.7 
250250817005 Boston 169 74 50.3 50.2 48.7 48.5 52.8 52.3 
250250818001 Boston 211 84 51.5 51.5 49.8 49.8 54.4 54.4 Noise Supporting Documentation I-61

I Boston Logan International Airport 2023/2024 EDR 
Table I-37 DNL Values at U.S. Census 2020 Block Groups, 2022-2024 
Census Block 
Group ID Name Popul 
ation 
Housing 
Units 
2022 2023 2024 
Average 
Block 
DNL 
DNL at 
centroid 
Average 
Block 
DNL 
DNL at 
centroid 
Average 
Block 
DNL 
DNL at 
centroid 
250250818002 Boston 226 92 51.7 51.7 49.9 50.0 54.9 55.0 
250250818003 Boston 87 21 51.3 51.3 49.8 49.7 55.0 54.9 
250250819001 Boston 260 98 50.7 50.8 48.9 49.1 53.7 53.9 
250250819002 Boston 166 66 50.3 50.5 48.4 48.7 53.1 53.5 
250250819003 Boston 265 80 50.3 50.3 48.6 48.5 53.4 53.3 
250250819004 Boston 781 309 50.2 50.2 48.3 48.5 53.2 53.4 
250250820001 Boston 520 219 50.7 50.8 49.2 49.2 54.5 54.5 
250250820002 Boston 421 194 50.7 50.7 49.0 49.1 54.2 54.2 
250250820003 Boston 427 171 50.9 50.9 49.1 49.2 54.2 54.3 
250250821001 Boston 612 225 50.3 50.4 48.8 48.8 54.1 54.1 
250250821002 Boston 1,234 485 50.0 50.1 48.5 48.5 53.8 53.9 
250250821003 Boston 1,356 638 50.5 50.5 48.8 48.8 54.0 54.0 
250250901001 Boston 365 147 49.5 49.4 48.2 48.0 53.5 53.3 
250250901002 Boston 267 119 N/A N/A 47.5 47.4 52.6 52.5 
250250901003 Boston 550 198 N/A N/A 47.4 47.4 52.6 52.6 
250250901004 Boston 340 117 N/A N/A 46.9 46.8 51.9 51.7 
250250901005 Boston 392 131 N/A N/A 46.3 46.4 51.0 51.2 
250250902001 Boston 325 128 N/A N/A 47.6 47.5 52.7 52.6 
250250902002 Boston 553 225 N/A N/A 48.0 48.0 53.2 53.3 
250250903001 Boston 627 213 49.6 49.6 48.4 48.5 53.6 53.7 
250250903002 Boston 1,329 456 49.7 49.8 48.7 48.5 54.0 53.8 
250250903003 Boston 1,081 391 50.4 50.4 49.0 49.1 54.3 54.4 
250250904001 Boston 486 162 51.0 51.1 49.7 49.7 55.0 55.0 
250250904002 Boston 407 177 50.9 50.8 49.7 49.4 54.9 54.7 
250250904003 Boston 464 135 51.4 51.5 50.0 50.1 55.2 55.4 
250250904004 Boston 397 157 51.7 51.7 50.2 50.2 55.3 55.4 Noise Supporting Documentation I-62

Boston Logan International Airport 2023/2024 EDR I 
Table I-37 DNL Values at U.S. Census 2020 Block Groups, 2022-2024 
Census Block 
Group ID Name Popul 
ation 
Housing 
Units 
2022 2023 2024 
Average 
Block 
DNL 
DNL at 
centroid 
Average 
Block 
DNL 
DNL at 
centroid 
Average 
Block 
DNL 
DNL at 
centroid 
250250906001 Boston 345 120 52.0 52.0 50.4 50.4 55.5 55.4 
250250906002 Boston 721 255 52.2 52.2 50.7 50.8 55.8 55.9 
250250907001 Boston 436 201 49.9 50.0 49.7 49.7 53.8 53.8 
250250907002 Boston 482 222 50.9 50.8 50.3 50.2 55.2 55.1 
250250907003 Boston 577 295 49.9 50.0 49.4 49.5 53.9 54.1 
250250907004 Boston 190 90 52.0 52.2 51.5 51.2 56.6 56.4 
250250909011 Boston 443 234 50.9 50.3 51.9 51.0 53.1 52.8 
250250909012 Boston 534 244 52.5 53.9 54.9 56.3 54.9 55.8 
250250910011 Boston 295 145 N/A N/A 48.0 47.9 51.0 50.8 
250250910012 Boston 490 260 N/A N/A 48.9 48.8 50.7 50.3 
250250910013 Boston 354 197 49.9 51.0 51.6 53.3 52.0 53.0 
250250910014 Boston 717 383 N/A N/A 50.6 49.8 51.8 51.9 
250250911001 Boston 1,225 538 N/A N/A 49.1 49.1 52.3 52.3 
250250911002 Boston 486 201 N/A N/A 48.9 49.0 51.5 51.3 
250250911003 Boston 98 38 N/A N/A 48.4 48.6 51.4 51.7 
250250911004 Boston 381 169 N/A N/A 48.4 48.3 52.0 51.9 
250250911005 Boston 399 164 N/A N/A 48.7 48.7 52.6 52.7 
250250912001 Boston 455 220 49.5 49.7 48.9 49.1 53.4 53.8 
250250912002 Boston 154 71 N/A N/A 48.4 48.3 52.6 52.5 
250250912003 Boston 540 229 49.5 49.5 48.7 48.8 53.5 53.7 
250250913001 Boston 541 184 50.5 50.5 49.7 49.6 54.9 54.8 
250250913002 Boston 519 184 51.3 51.4 50.2 50.2 55.5 55.5 
250250914001 Boston 1,104 408 49.7 49.8 48.9 48.9 54.0 54.1 
250250914002 Boston 354 135 50.5 50.4 49.3 49.3 54.7 54.6 
250250915001 Boston 360 113 N/A N/A 48.0 47.9 52.1 52.1 
250250915002 Boston 733 245 N/A N/A 47.7 47.7 52.0 52.2 Noise Supporting Documentation I-63

I Boston Logan International Airport 2023/2024 EDR 
Table I-37 DNL Values at U.S. Census 2020 Block Groups, 2022-2024 
Census Block 
Group ID Name Popul 
ation 
Housing 
Units 
2022 2023 2024 
Average 
Block 
DNL 
DNL at 
centroid 
Average 
Block 
DNL 
DNL at 
centroid 
Average 
Block 
DNL 
DNL at 
centroid 
250250915003 Boston 371 169 N/A N/A 47.3 47.4 51.3 51.1 
250250916001 Boston 364 201 N/A N/A 47.0 47.0 50.4 50.3 
250250916002 Boston 748 275 N/A N/A 47.5 47.4 50.2 50.1 
250250916003 Boston 211 73 N/A N/A 48.3 48.0 49.7 49.7 
250250917001 Boston 1,170 421 N/A N/A 46.7 46.8 49.6 49.6 
250250917002 Boston 379 109 N/A N/A 46.7 46.7 50.3 50.3 
250250917003 Boston 143 54 N/A N/A 46.6 46.5 50.5 50.2 
250250918001 Boston 653 260 N/A N/A 47.6 47.4 52.3 51.9 
250250918002 Boston 799 308 N/A N/A 47.0 47.2 51.2 51.6 
250250918003 Boston 659 253 N/A N/A 46.9 47.1 51.3 51.7 
250250919001 Boston 500 155 N/A N/A 46.8 46.8 51.5 51.4 
250250919002 Boston 101 40 N/A N/A 46.3 46.3 50.3 50.6 
250250919003 Boston 837 303 N/A N/A 46.1 46.2 50.5 50.7 
250250919004 Boston 370 126 N/A N/A 45.8 45.8 49.6 49.6 
250250920004 Boston 735 238 N/A N/A 46.3 46.3 50.0 49.9 
250250921011 Boston 894 382 51.0 51.0 52.5 53.4 52.2 53.0 
250250921012 Boston 482 166 N/A N/A 48.6 48.7 49.7 49.7 
250250921013 Boston 57 16 51.2 51.8 55.1 54.3 54.6 53.8 
250250921014 Boston 739 320 N/A N/A 49.3 50.0 49.8 50.3 
250250921015 Boston 457 160 N/A N/A 49.2 49.4 49.6 49.7 
250250924001 Boston 333 92 N/A N/A 45.5 45.5 49.7 49.6 
250250924002 Boston 380 123 N/A N/A 45.9 45.8 50.5 50.4 
250250924003 Boston 517 212 N/A N/A 46.7 46.6 51.7 51.5 
250250924004 Boston 318 86 N/A N/A 46.4 46.6 51.5 51.7 
250250924005 Boston 779 265 N/A N/A 46.6 46.6 51.6 51.6 
250251001004 Boston 362 121 N/A N/A 45.6 45.5 50.4 50.3 Noise Supporting Documentation I-64

Boston Logan International Airport 2023/2024 EDR I 
Table I-37 DNL Values at U.S. Census 2020 Block Groups, 2022-2024 
Census Block 
Group ID Name Popul 
ation 
Housing 
Units 
2022 2023 2024 
Average 
Block 
DNL 
DNL at 
centroid 
Average 
Block 
DNL 
DNL at 
centroid 
Average 
Block 
DNL 
DNL at 
centroid 
250251001005 Boston 129 60 N/A N/A 45.0 45.0 49.6 49.7 
250251001006 Boston 629 179 N/A N/A 45.3 45.5 49.7 50.0 
250251006011 Boston 204 87 52.2 52.1 56.4 54.7 55.8 54.1 
250251006012 Boston 295 105 50.5 50.3 52.7 52.8 52.3 52.3 
250251006013 Boston 413 167 N/A N/A 50.7 50.8 50.6 50.7 
250251006031 Boston 491 175 56.1 56.4 58.9 58.6 58.4 58.1 
250251006032 Boston 272 120 57.7 58.7 60.4 60.9 59.9 60.3 
250251007001 Boston 396 179 54.5 54.4 55.5 56.7 54.9 56.2 
250251007002 Boston 579 345 56.9 57.5 58.8 59.5 58.3 59.1 
250251007003 Boston 146 52 56.0 56.3 59.4 58.4 58.9 57.9 
250251007004 Boston 258 116 52.9 53.0 55.2 55.3 54.6 54.8 
250251007005 Boston 198 82 52.2 52.2 54.2 54.5 53.7 54.0 
250251008001 Boston 307 111 N/A N/A 50.2 50.0 50.2 50.0 
250251008002 Boston 548 250 50.2 50.0 52.6 52.4 52.2 52.0 
250251008003 Boston 142 41 50.3 50.3 52.9 52.6 52.4 52.2 
250251008004 Boston 144 75 50.4 52.4 52.4 54.7 51.9 54.1 
250251008005 Boston 336 138 N/A N/A 51.3 50.8 50.9 50.5 
250251008006 Boston 672 319 N/A N/A 50.6 49.9 50.4 49.8 
250251011013 Boston 157 65 N/A N/A 45.1 45.8 49.9 50.8 
250251101041 Boston 222 96 N/A N/A 45.6 45.5 50.4 50.3 
250251101042 Boston 1,075 392 N/A N/A 45.9 45.9 50.7 50.7 
250251101051 Boston 797 405 N/A N/A 46.7 46.6 51.6 51.5 
250251101061 Boston 262 146 N/A N/A 46.1 46.1 51.1 51.1 
250251101062 Boston 203 84 N/A N/A 46.3 46.3 51.3 51.3 
250251102011 Boston 1,211 527 N/A N/A 45.1 45.2 50.3 50.5 
250251103011 Boston 700 282 N/A N/A 45.9 45.8 51.1 51.1 Noise Supporting Documentation I-65

I Boston Logan International Airport 2023/2024 EDR 
Table I-37 DNL Values at U.S. Census 2020 Block Groups, 2022-2024 
Census Block 
Group ID Name Popul 
ation 
Housing 
Units 
2022 2023 2024 
Average 
Block 
DNL 
DNL at 
centroid 
Average 
Block 
DNL 
DNL at 
centroid 
Average 
Block 
DNL 
DNL at 
centroid 
250251103012 Boston 498 195 N/A N/A 46.1 46.2 51.3 51.4 
250251104011 Boston 1,262 517 N/A N/A 45.8 45.7 50.8 50.7 
250251104012 Boston 501 194 N/A N/A 45.5 45.6 50.7 50.7 
250251104031 Boston 160 58 N/A N/A 45.0 45.0 50.2 50.2 
250251104032 Boston 236 99 N/A N/A 45.1 45.1 50.2 50.3 
250251104033 Boston 206 59 N/A N/A 44.4 44.4 49.6 49.6 
250251104034 Boston 218 65 N/A N/A 44.8 44.9 49.9 50.0 
250251105021 Boston 511 216 N/A N/A 44.9 44.9 49.8 49.8 
250251105022 Boston 630 284 N/A N/A 45.0 45.0 50.0 50.1 
250251105023 Boston 367 144 N/A N/A 44.6 44.6 49.5 49.6 
250251201042 Boston 475 201 N/A N/A 45.5 45.4 49.9 49.8 
250251202011 Boston 871 402 N/A N/A 45.9 45.8 50.3 50.3 
250251202012 Boston 1,390 676 N/A N/A 46.7 46.7 51.4 51.4 
250251202013 Boston 200 102 N/A N/A 46.5 46.6 51.3 51.4 
250251203011 Boston 503 186 N/A N/A 46.4 46.3 50.4 50.3 
250251203012 Boston 308 124 N/A N/A 47.2 47.3 51.6 51.9 
250251203013 Boston 574 192 N/A N/A 47.3 47.3 52.0 52.0 
250251203014 Boston 419 205 N/A N/A 46.2 46.3 50.4 50.5 
250251204002 Boston 423 233 N/A N/A 45.6 45.6 49.8 49.8 
250259811002 Boston 6 1 N/A N/A 46.9 46.9 52.1 52.1 
250259816001 Boston 2 1 67.3 70.0 70.6 70.6 69.9 69.9 
250235001011 Boston/Hull 1,501 859 54.2 51.6 54.1 51.7 53.7 52.0 
250259813001 Boston/
Winthrop 55 33 64.8 78.4 63.9 79.9 64.1 78.8 
250173546011 Cambridge 5 - 49.9 50.0 49.5 49.6 49.8 49.9 
250173548001 Cambridge 1,082 522 50.9 50.9 50.5 50.5 50.6 50.6 Noise Supporting Documentation I-66

Boston Logan International Airport 2023/2024 EDR I 
Table I-37 DNL Values at U.S. Census 2020 Block Groups, 2022-2024 
Census Block 
Group ID Name Popul 
ation 
Housing 
Units 
2022 2023 2024 
Average 
Block 
DNL 
DNL at 
centroid 
Average 
Block 
DNL 
DNL at 
centroid 
Average 
Block 
DNL 
DNL at 
centroid 
250173548002 Cambridge 1,241 609 50.2 50.3 49.8 49.9 49.9 49.9 
250173549012 Cambridge 964 567 50.2 50.2 49.7 49.7 49.9 49.9 
250173549021 Cambridge 1,311 567 50.7 50.8 50.3 50.4 50.4 50.5 
250173549022 Cambridge 1,318 623 50.5 50.5 50.1 50.0 50.2 50.3 
250173549023 Cambridge 2,070 808 50.3 50.3 49.8 49.9 50.1 50.1 
250173549024 Cambridge 917 445 50.4 50.4 50.0 50.0 50.2 50.2 
250173550001 Cambridge 883 423 50.5 50.6 50.0 50.1 50.2 50.3 
250173550002 Cambridge 1,309 677 51.0 51.0 50.5 50.5 50.6 50.6 
250173550003 Cambridge 937 445 50.9 51.1 50.5 50.7 50.6 50.8 
250173509002 Cambridge/
Somerville 1,312 581 50.2 50.3 49.8 49.9 49.6 49.7 
250251601022 Chelsea 1,431 378 58.8 59.0 58.6 58.6 58.5 58.4 
250251601024 Chelsea 40 9 59.6 59.7 59.1 59.2 59.0 59.1 
250251601032 Chelsea 881 234 64.1 64.2 63.6 63.7 63.9 63.9 
250251601033 Chelsea 303 164 60.7 60.8 59.6 60.4 59.5 60.3 
250251601034 Chelsea 664 166 63.6 64.0 62.1 63.5 62.2 63.7 
250251602001 Chelsea 717 185 61.3 61.4 61.1 61.0 61.2 61.0 
250251602002 Chelsea 379 104 62.8 62.9 62.5 62.4 62.8 62.6 
250251602003 Chelsea 458 125 64.1 64.2 63.3 63.7 63.6 64.0 
250251602004 Chelsea 182 59 63.3 63.5 62.5 63.0 62.9 63.4 
250251603001 Chelsea 389 207 62.9 60.9 62.6 60.5 63.0 60.9 
250251603002 Chelsea 1,013 652 60.6 60.1 60.2 59.6 60.6 59.9 
250251604001 Chelsea 258 94 62.4 62.7 62.1 62.2 62.4 62.6 
250251604002 Chelsea 164 52 60.1 59.8 59.8 59.3 59.9 59.3 
250251604003 Chelsea 489 255 56.4 56.4 55.6 55.9 55.3 55.6 
250251604004 Chelsea 157 98 59.8 59.4 59.1 59.0 59.0 58.9 Noise Supporting Documentation I-67

I Boston Logan International Airport 2023/2024 EDR 
Table I-37 DNL Values at U.S. Census 2020 Block Groups, 2022-2024 
Census Block 
Group ID Name Popul 
ation 
Housing 
Units 
2022 2023 2024 
Average 
Block 
DNL 
DNL at 
centroid 
Average 
Block 
DNL 
DNL at 
centroid 
Average 
Block 
DNL 
DNL at 
centroid 
250251605011 Chelsea 1,076 328 55.1 55.0 54.7 54.6 54.3 54.2 
250251605012 Chelsea 960 279 55.5 55.7 55.3 55.3 55.0 55.0 
250251605013 Chelsea 283 90 57.0 57.0 57.0 56.5 56.8 56.3 
250251605014 Chelsea 582 333 55.9 55.8 55.3 55.4 55.0 55.1 
250251605015 Chelsea 878 322 54.6 54.7 54.2 54.3 53.9 54.0 
250251605021 Chelsea 429 132 55.1 55.0 55.8 54.6 55.6 54.3 
250251605023 Chelsea 609 190 53.7 52.8 52.4 52.6 51.9 52.2 
250251605024 Chelsea 194 54 52.6 52.6 52.5 52.4 52.1 51.9 
250251605025 Chelsea 456 199 55.6 56.2 54.3 55.8 54.0 55.6 
250251606011 Chelsea 222 10 53.0 53.1 52.8 52.7 52.4 52.3 
250251606012 Chelsea 778 460 51.8 51.5 51.2 51.2 50.8 50.8 
250251606013 Chelsea 579 196 52.6 52.0 51.8 51.7 51.4 51.3 
250251606014 Chelsea 540 195 52.7 52.9 52.5 52.5 52.0 52.0 
250251606021 Chelsea 850 297 52.5 52.2 52.0 51.8 51.5 51.3 
250251606022 Chelsea 519 195 50.3 50.0 50.0 49.7 49.4 49.1 
250251606024 Chelsea 632 220 50.3 50.1 49.7 49.8 49.3 49.3 
250251606025 Chelsea 646 264 51.1 50.9 50.4 50.6 49.9 50.1 
250251706012 Chelsea/
Revere 351 113 50.7 50.9 50.6 51.2 50.0 50.5 
250173421012 Everett 1,227 402 50.2 50.3 49.8 49.9 49.2 49.3 
250173421014 Everett 1,052 377 49.9 49.8 49.6 49.5 49.0 48.9 
250173422012 Everett 1,351 488 50.8 50.8 50.3 50.3 49.7 49.7 
250173423011 Everett 1,460 513 51.8 51.5 51.2 50.9 50.8 50.5 
250173423012 Everett 1,782 625 52.5 52.5 51.9 51.9 51.5 51.5 
250173423021 Everett 2,003 710 53.2 53.3 52.5 52.6 52.2 52.3 
250173423022 Everett 805 287 54.9 54.8 54.2 54.1 54.0 53.9 Noise Supporting Documentation I-68

Boston Logan International Airport 2023/2024 EDR I 
Table I-37 DNL Values at U.S. Census 2020 Block Groups, 2022-2024 
Census Block 
Group ID Name Popul 
ation 
Housing 
Units 
2022 2023 2024 
Average 
Block 
DNL 
DNL at 
centroid 
Average 
Block 
DNL 
DNL at 
centroid 
Average 
Block 
DNL 
DNL at 
centroid 
250173423023 Everett 1,740 620 53.1 53.1 52.4 52.5 52.1 52.1 
250173424011 Everett 2,148 897 56.1 56.1 55.5 55.5 55.3 55.3 
250173424012 Everett 1,398 537 57.1 57.1 56.4 56.4 56.4 56.4 
250173424013 Everett 1,058 407 53.5 53.3 52.9 52.7 52.4 52.3 
250173424021 Everett 1,387 674 57.9 58.0 57.3 57.4 57.3 57.4 
250173424022 Everett 1,413 630 56.9 56.0 56.2 55.3 56.2 55.2 
250173424023 Everett 842 402 57.2 57.3 56.6 56.7 56.4 56.5 
250173424024 Everett 22 9 58.8 58.5 58.2 57.9 58.3 58.0 
250173425011 Everett 2,291 843 53.3 53.3 52.8 52.7 52.3 52.2 
250173425012 Everett 2,449 991 55.9 55.7 55.2 55.1 54.9 54.7 
250173425021 Everett 1,607 575 51.4 51.5 50.9 51.0 50.3 50.4 
250173426001 Everett 1,368 428 52.4 52.3 51.9 51.9 51.4 51.4 
250173426002 Everett 1,076 363 54.2 54.4 53.7 53.9 53.3 53.4 
250173426003 Everett 2,525 960 53.2 53.3 52.7 52.8 52.2 52.2 
250235001012 Hull 775 463 51.3 50.4 51.3 50.4 50.4 49.5 
250235001013 Hull 1,341 738 50.0 49.9 49.6 49.4 49.2 49.1 
250092051001 Lynn 1,434 538 51.7 52.5 52.1 52.9 51.7 52.5 
250092051002 Lynn 1,275 424 52.4 52.6 52.8 52.9 52.3 52.5 
250092051003 Lynn 1,074 364 54.3 54.5 54.7 54.9 54.3 54.5 
250092051004 Lynn 1,653 576 54.1 54.5 54.5 54.9 54.1 54.6 
250092051005 Lynn 692 261 54.9 55.2 55.3 55.6 55.0 55.3 
250092052001 Lynn 869 424 52.8 52.8 53.1 53.2 52.7 52.8 
250092052002 Lynn 805 285 55.3 55.2 55.7 55.5 55.3 55.2 
250092052003 Lynn 1,607 577 55.1 55.2 55.5 55.6 55.1 55.2 
250092052004 Lynn 1,603 496 56.0 56.1 56.3 56.5 56.0 56.1 
250092052005 Lynn 1,041 390 52.6 55.0 52.9 55.4 52.5 55.0 Noise Supporting Documentation I-69

I Boston Logan International Airport 2023/2024 EDR 
Table I-37 DNL Values at U.S. Census 2020 Block Groups, 2022-2024 
Census Block 
Group ID Name Popul 
ation 
Housing 
Units 
2022 2023 2024 
Average 
Block 
DNL 
DNL at 
centroid 
Average 
Block 
DNL 
DNL at 
centroid 
Average 
Block 
DNL 
DNL at 
centroid 
250092053002 Lynn 1,054 356 N/A N/A 49.5 49.6 49.1 49.1 
250092055001 Lynn 2,391 762 52.5 51.2 52.8 51.5 52.4 51.1 
250092055002 Lynn 3,109 1,034 56.7 56.6 57.1 57.0 56.7 56.6 
250092058001 Lynn 1,124 364 52.1 52.3 52.4 52.6 52.0 52.2 
250092058002 Lynn 1,220 342 52.3 52.6 52.6 52.9 52.2 52.5 
250092058003 Lynn 1,381 508 50.8 50.5 51.2 50.8 50.7 50.3 
250092059001 Lynn 1,952 581 52.2 52.3 52.5 52.6 52.1 52.2 
250092059002 Lynn 1,398 453 51.2 51.3 51.5 51.6 51.1 51.2 
250092059003 Lynn 1,448 501 N/A N/A 49.8 49.5 49.3 49.1 
250092060001 Lynn 1,630 478 56.3 56.5 56.6 56.8 56.2 56.4 
250092060002 Lynn 2,074 685 54.9 55.2 55.3 55.5 54.9 55.1 
250092061001 Lynn 1,998 795 56.4 56.9 56.7 57.3 56.3 56.9 
250092061002 Lynn 2,201 684 57.2 57.4 57.5 57.7 57.2 57.4 
250092062001 Lynn 1,352 361 54.8 54.9 55.1 55.2 54.7 54.8 
250092062002 Lynn 2,507 811 56.5 56.9 56.8 57.3 56.4 56.9 
250092062003 Lynn 2,020 578 55.5 55.0 55.9 55.3 55.4 54.9 
250092063001 Lynn 1,220 388 51.7 51.6 52.0 51.9 51.5 51.4 
250092063002 Lynn 1,137 376 53.6 53.9 54.0 54.2 53.5 53.8 
250092063003 Lynn 1,018 325 50.7 50.2 51.0 50.5 50.4 50.0 
250092063004 Lynn 839 258 52.4 52.8 52.8 53.2 52.3 52.7 
250092064004 Lynn 1,578 499 50.6 50.4 50.9 50.7 50.4 50.2 
250092068001 Lynn 1,982 719 51.3 51.2 51.6 51.5 51.0 50.9 
250092068002 Lynn 2,443 1,062 53.3 53.2 53.7 53.5 53.1 53.0 
250092069001 Lynn 1,006 672 50.9 50.8 51.3 51.2 50.6 50.5 
250092069002 Lynn 1,380 677 N/A N/A 49.8 49.7 48.5 48.4 
250092069003 Lynn 1,809 967 50.6 50.6 51.1 51.1 50.2 50.2 Noise Supporting Documentation I-70

Boston Logan International Airport 2023/2024 EDR I 
Table I-37 DNL Values at U.S. Census 2020 Block Groups, 2022-2024 
Census Block 
Group ID Name Popul 
ation 
Housing 
Units 
2022 2023 2024 
Average 
Block 
DNL 
DNL at 
centroid 
Average 
Block 
DNL 
DNL at 
centroid 
Average 
Block 
DNL 
DNL at 
centroid 
250092069004 Lynn 800 345 N/A N/A 49.9 49.9 48.9 48.9 
250092070001 Lynn 966 614 55.2 54.3 55.6 54.6 55.0 54.1 
250092070002 Lynn 1,323 440 57.8 57.9 58.1 58.2 57.7 57.8 
250092071001 Lynn 1,581 455 55.9 56.1 56.2 56.4 55.8 56.0 
250092071002 Lynn 1,176 326 57.1 57.3 57.5 57.7 57.0 57.3 
250092071003 Lynn 1,050 338 54.5 54.6 54.8 54.9 54.4 54.5 
250092072001 Lynn 1,443 409 57.3 59.1 57.6 59.4 57.2 59.0 
250092072002 Lynn 1,560 713 57.9 58.0 58.2 58.4 57.8 58.0 
250173412002 Malden 1,022 472 53.2 53.4 52.3 52.5 52.3 52.5 
250173412003 Malden 937 369 53.0 53.1 52.1 52.2 52.0 52.1 
250173412004 Malden 1,737 736 51.7 51.8 50.8 50.8 50.7 50.7 
250173412005 Malden 1,076 392 51.0 50.9 50.1 49.9 49.9 49.8 
250173414004 Malden 1,827 634 50.3 50.2 49.6 49.5 49.3 49.2 
250173414005 Malden 781 392 52.1 52.0 51.4 51.3 51.1 51.1 
250173391011 Medford 1,286 696 52.1 52.2 51.3 51.4 51.2 51.3 
250173391012 Medford 872 323 50.9 51.0 50.1 50.1 50.0 50.0 
250173391013 Medford 1,109 806 52.2 52.0 51.4 51.3 51.4 51.3 
250173391022 Medford 1,314 600 51.6 51.6 50.7 50.7 50.6 50.6 
250173394001 Medford 1,098 541 50.3 50.0 49.5 49.3 49.5 49.2 
250173394002 Medford 666 266 50.9 50.8 50.3 50.2 50.3 50.2 
250173394003 Medford 772 382 50.5 50.6 49.9 49.9 49.8 49.9 
250173394004 Medford 943 418 50.2 50.1 49.5 49.5 49.5 49.4 
250173395001 Medford 2,982 600 51.9 52.0 51.3 51.4 51.4 51.5 
250173395002 Medford 1,214 555 52.6 52.6 51.9 52.0 52.0 52.1 
250173395003 Medford 677 297 51.4 51.2 50.7 50.5 50.6 50.5 
250173395004 Medford 789 309 51.5 51.6 50.8 50.9 50.9 50.9 Noise Supporting Documentation I-71

I Boston Logan International Airport 2023/2024 EDR 
Table I-37 DNL Values at U.S. Census 2020 Block Groups, 2022-2024 
Census Block 
Group ID Name Popul 
ation 
Housing 
Units 
2022 2023 2024 
Average 
Block 
DNL 
DNL at 
centroid 
Average 
Block 
DNL 
DNL at 
centroid 
Average 
Block 
DNL 
DNL at 
centroid 
250173396001 Medford 844 388 52.9 52.8 52.4 52.3 52.6 52.5 
250173396002 Medford 892 377 53.2 53.2 52.7 52.6 52.8 52.8 
250173396003 Medford 1,000 450 52.9 53.0 52.5 52.5 52.6 52.6 
250173396004 Medford 843 370 52.9 53.1 52.4 52.6 52.4 52.6 
250173396005 Medford 897 373 52.6 52.6 52.1 52.2 51.9 52.0 
250173396006 Medford 978 435 52.2 52.3 51.8 51.9 51.4 51.5 
250173397001 Medford 654 296 54.0 54.4 53.4 53.8 53.5 54.0 
250173397002 Medford 1,622 686 53.6 53.8 53.1 53.3 53.0 53.2 
250173397003 Medford 753 354 53.8 53.8 53.3 53.3 53.4 53.4 
250173397004 Medford 887 375 53.1 53.1 52.6 52.7 52.5 52.5 
250173398021 Medford 1,490 703 55.6 55.7 55.0 55.0 55.0 55.2 
250173398022 Medford 680 253 53.6 53.7 52.9 53.0 53.0 53.0 
250173398023 Medford 761 275 54.4 54.4 53.7 53.7 53.8 53.8 
250173398024 Medford 2,554 1,420 54.8 55.5 54.2 54.9 54.3 54.9 
250173398031 Medford 1,043 620 56.6 56.9 56.0 56.3 56.0 56.3 
250173398032 Medford 2,340 1,431 56.3 56.3 55.7 55.6 55.7 55.6 
250173398041 Medford 695 265 56.1 56.2 55.5 55.5 55.5 55.6 
250173398042 Medford 535 240 55.7 55.8 55.1 55.1 55.0 55.1 
250173398043 Medford 1,030 429 55.2 54.9 54.5 54.2 54.4 54.1 
250173399001 Medford 1,577 671 53.8 53.9 53.0 53.1 52.9 53.0 
250173399002 Medford 943 382 53.7 53.7 53.0 52.9 52.9 52.8 
250173399003 Medford 1,073 459 52.6 52.6 51.7 51.7 51.6 51.5 
250173399004 Medford 812 347 53.1 53.2 52.4 52.4 52.3 52.4 
250173399005 Medford 922 382 52.9 52.9 52.1 52.1 51.9 51.9 
250173400001 Medford 1,108 461 52.1 52.1 51.2 51.2 50.9 51.0 
250173400002 Medford 778 379 52.1 52.2 51.3 51.3 51.1 51.1 Noise Supporting Documentation I-72

Boston Logan International Airport 2023/2024 EDR I 
Table I-37 DNL Values at U.S. Census 2020 Block Groups, 2022-2024 
Census Block 
Group ID Name Popul 
ation 
Housing 
Units 
2022 2023 2024 
Average 
Block 
DNL 
DNL at 
centroid 
Average 
Block 
DNL 
DNL at 
centroid 
Average 
Block 
DNL 
DNL at 
centroid 
250173400003 Medford 704 304 52.7 52.7 51.8 51.9 51.7 51.8 
250173401003 Medford 1,535 639 51.6 51.7 50.6 50.7 50.4 50.5 
250173401005 Medford 857 327 50.7 50.8 49.7 49.7 49.5 49.5 
250214161011 Milton 2,162 737 53.2 54.0 55.2 56.1 54.8 55.6 
250214161012 Milton 1,965 608 N/A N/A 50.8 51.9 50.6 51.4 
250214161013 Milton 827 282 52.3 52.1 54.3 54.3 54.0 53.9 
250214164001 Milton 887 283 N/A N/A 50.2 51.6 49.9 51.2 
250214164002 Milton 1,071 346 53.9 54.1 55.7 56.2 55.3 55.7 
250214164003 Milton 1,007 359 51.9 54.4 54.1 56.5 53.7 56.0 
250214164005 Milton 815 311 54.1 55.3 55.5 57.4 55.1 56.9 
250214164006 Milton 1,122 395 53.1 56.0 55.0 58.1 54.5 57.6 
250214164007 Milton 662 258 N/A N/A 49.8 51.3 49.5 50.9 
250214172024 Milton/
Quincy 1,155 472 N/A N/A 50.1 49.4 49.8 49.1 
250092106001 Peabody 1,809 744 50.1 51.1 50.7 51.7 50.4 51.4 
250092106002 Peabody 2,615 1,033 50.2 50.2 50.6 50.6 50.2 50.3 
250092107001 Peabody 1,326 535 N/A N/A 49.9 49.9 49.6 49.6 
250092107002 Peabody 1,062 509 49.7 49.7 50.3 50.4 50.0 50.1 
250092107003 Peabody 1,271 545 50.2 50.5 50.8 51.1 50.5 50.9 
250092107004 Peabody 787 286 50.0 50.0 50.6 50.6 50.3 50.3 
250092108002 Peabody 1,327 627 N/A N/A 49.7 49.8 49.4 49.6 
250092108003 Peabody 1,026 475 N/A N/A 49.6 49.6 49.4 49.3 
250214172013 Quincy 1,991 867 49.6 50.4 51.5 52.4 51.2 52.0 
250214172014 Quincy 808 428 52.0 53.2 54.1 55.1 53.7 54.7 
250214173001 Quincy 3,660 2,357 52.4 53.9 54.1 55.9 53.6 55.4 
250214175023 Quincy 917 347 50.2 49.8 51.6 51.7 51.2 51.3 Noise Supporting Documentation I-73

I Boston Logan International Airport 2023/2024 EDR 
Table I-37 DNL Values at U.S. Census 2020 Block Groups, 2022-2024 
Census Block 
Group ID Name Popul 
ation 
Housing 
Units 
2022 2023 2024 
Average 
Block 
DNL 
DNL at 
centroid 
Average 
Block 
DNL 
DNL at 
centroid 
Average 
Block 
DNL 
DNL at 
centroid 
250251704001 Revere 874 313 50.1 48.7 50.9 49.4 50.0 48.6 
250251704002 Revere 243 96 49.9 50.1 50.3 51.0 49.4 50.1 
250251705021 Revere 241 91 59.4 59.9 60.0 60.4 59.4 59.8 
250251705022 Revere 954 643 56.3 58.4 56.6 59.0 55.8 58.3 
250251705023 Revere 524 266 60.8 60.9 61.4 61.3 60.8 60.8 
250251705031 Revere 1,065 601 55.4 56.8 55.8 57.5 55.0 56.7 
250251705041 Revere 115 39 56.4 56.8 57.2 57.6 56.3 56.7 
250251705042 Revere 335 106 53.3 52.7 54.4 53.6 53.4 52.6 
250251706014 Revere 30 12 50.3 50.2 51.3 50.9 50.4 50.0 
250251707011 Revere 735 334 56.0 54.7 58.4 55.8 57.4 54.7 
250251707012 Revere 829 345 60.8 62.3 61.1 63.0 60.2 62.2 
250251707021 Revere 52 21 53.6 53.2 54.5 54.3 53.5 53.2 
250251707022 Revere 1,180 375 55.0 54.9 56.6 56.1 55.5 55.0 
250251707023 Revere 650 217 52.0 52.0 52.7 53.0 51.7 52.0 
250251707024 Revere 562 183 53.1 53.3 54.4 54.3 53.4 53.3 
250251707025 Revere 371 194 55.7 55.4 55.5 56.4 54.4 55.3 
250251708001 Revere 1,054 391 64.8 63.9 65.9 64.7 65.1 63.9 
250251708002 Revere 652 218 64.4 65.8 66.5 66.6 65.7 65.8 
250251708003 Revere 643 259 62.4 64.4 63.6 65.3 62.5 64.4 
250251708004 Revere 445 177 63.3 61.1 66.7 62.4 65.9 61.1 
250092047011 Salem 1,014 402 51.8 53.6 52.3 54.1 51.9 53.8 
250173501051 Somerville 1,181 530 54.1 54.3 53.5 53.8 53.3 53.6 
250173501061 Somerville 1,660 1,006 53.7 53.8 53.2 53.2 52.9 53.0 
250173501071 Somerville 1,355 553 51.0 51.2 50.5 50.7 50.2 50.3 
250173501081 Somerville 2,655 1,049 53.0 52.9 52.5 52.4 52.2 52.0 
250173501082 Somerville 1,519 725 51.6 51.7 51.1 51.2 50.7 50.8 Noise Supporting Documentation I-74

Boston Logan International Airport 2023/2024 EDR I 
Table I-37 DNL Values at U.S. Census 2020 Block Groups, 2022-2024 
Census Block 
Group ID Name Popul 
ation 
Housing 
Units 
2022 2023 2024 
Average 
Block 
DNL 
DNL at 
centroid 
Average 
Block 
DNL 
DNL at 
centroid 
Average 
Block 
DNL 
DNL at 
centroid 
250173501091 Somerville 2,176 882 52.0 51.7 51.5 51.2 51.2 50.8 
250173502013 Somerville 769 319 50.3 50.3 49.8 49.8 49.4 49.4 
250173502021 Somerville 1,361 586 50.7 50.8 50.2 50.3 49.8 49.9 
250173502023 Somerville 1,120 564 50.8 50.8 50.3 50.3 49.9 49.9 
250173503001 Somerville 900 429 51.1 50.7 50.6 50.3 50.2 49.9 
250173503002 Somerville 1,118 528 50.6 50.7 50.2 50.3 49.9 49.9 
250173503003 Somerville 966 407 51.7 51.6 51.2 51.2 50.9 50.9 
250173504001 Somerville 1,054 397 52.5 52.6 52.0 52.1 52.1 52.3 
250173504002 Somerville 1,380 601 51.8 51.8 51.4 51.4 51.2 51.2 
250173504003 Somerville 1,077 468 51.2 51.2 50.8 50.8 50.6 50.6 
250173504004 Somerville 1,491 732 51.6 51.6 51.2 51.2 51.1 51.2 
250173504005 Somerville 899 392 52.2 52.2 51.7 51.8 51.7 51.8 
250173505001 Somerville 874 391 51.9 51.9 51.4 51.5 51.5 51.6 
250173505002 Somerville 869 395 51.7 51.8 51.3 51.3 51.4 51.5 
250173506001 Somerville 1,779 9 52.2 52.2 51.7 51.7 51.8 51.9 
250173506002 Somerville 984 391 51.7 51.7 51.2 51.1 51.3 51.3 
250173506003 Somerville 743 241 51.4 51.4 50.8 50.8 51.0 51.0 
250173506004 Somerville 1,282 507 52.0 52.0 51.5 51.6 51.7 51.7 
250173507011 Somerville 1,109 466 51.2 51.2 50.6 50.7 50.8 50.8 
250173507012 Somerville 1,048 476 50.8 51.0 50.3 50.4 50.3 50.5 
250173507013 Somerville 843 468 51.0 51.1 50.5 50.6 50.6 50.7 
250173507022 Somerville 1,298 678 50.6 50.6 50.0 50.0 50.1 50.1 
250173508001 Somerville 1,045 507 51.4 51.4 50.9 50.9 51.1 51.1 
250173508002 Somerville 1,031 461 51.5 51.5 51.0 51.0 51.2 51.2 
250173509001 Somerville 875 408 50.8 50.9 50.4 50.5 50.3 50.3 
250173509003 Somerville 1,344 718 51.0 51.1 50.6 50.7 50.7 50.8 Noise Supporting Documentation I-75

I Boston Logan International Airport 2023/2024 EDR 
Table I-37 DNL Values at U.S. Census 2020 Block Groups, 2022-2024 
Census Block 
Group ID Name Popul 
ation 
Housing 
Units 
2022 2023 2024 
Average 
Block 
DNL 
DNL at 
centroid 
Average 
Block 
DNL 
DNL at 
centroid 
Average 
Block 
DNL 
DNL at 
centroid 
250173510022 Somerville 1,174 511 50.2 50.2 49.8 49.8 49.5 49.6 
250173514031 Somerville 674 286 50.4 50.4 49.9 49.8 49.6 49.5 
250251801011 Winthrop 335 143 53.3 53.4 54.6 54.5 54.0 53.8 
250251801012 Winthrop 600 366 51.7 51.1 52.7 52.2 51.9 51.5 
250251801013 Winthrop 208 90 54.5 54.7 55.4 56.0 54.2 54.8 
250251801014 Winthrop 2,020 879 55.0 55.1 56.3 56.3 55.4 55.3 
250251802001 Winthrop 641 234 58.8 59.1 60.5 60.5 59.3 59.1 
250251802002 Winthrop 362 143 56.8 56.7 57.9 57.7 57.2 57.1 
250251802003 Winthrop 545 264 58.4 58.3 59.2 59.3 58.6 58.6 
250251802004 Winthrop 1,028 499 60.7 61.2 62.7 62.5 61.3 61.1 
250251803011 Winthrop 522 212 60.0 59.9 61.0 60.9 60.1 60.0 
250251803012 Winthrop 754 331 61.0 60.8 61.9 61.7 61.7 61.5 
250251803013 Winthrop 419 157 63.1 62.9 64.1 64.2 62.7 62.7 
250251803014 Winthrop 651 265 61.5 61.5 61.9 62.2 61.3 61.5 
250251804001 Winthrop 721 376 57.9 56.0 59.1 57.0 58.8 56.6 
250251804002 Winthrop 299 118 58.6 58.2 59.7 59.1 59.4 58.9 
250251805001 Winthrop 384 180 55.5 56.6 56.3 57.8 56.0 57.5 
250251805002 Winthrop 344 145 64.8 64.3 66.4 65.8 66.3 65.6 
250251805003 Winthrop 239 118 59.8 58.5 60.9 59.9 60.6 59.6 
250251805004 Winthrop 389 185 66.3 67.3 67.5 68.9 67.4 68.7 
Source: HMMH, 2025. 
Notes: N/A: Not applicable
Census Block group was not in 2023 or 2024 50 dB or greater noise contours. Noise Supporting Documentation I-76

Boston Logan International Airport 2023/2024 EDR I 
I.6 Airline Fleet Improvements 
Commercial air carrier and cargo operators are deploying the newest engine technology at Logan Airport. 
Table I-38 reports the percentage of an airline’s fleet that is Stage 3, Stage 4 equivalent, or Stage 5
equivalent for 2022, 2023, and 2024. Noise Supporting Documentation I-77

I Boston Logan International Airport 2023/2024 EDR 
Table I-38 Percentage of Airline Operations in Stage 3, 4 or 5 Aircraft, 2022-2024 
Airlines 1 
2022 2023 2024 2022 2023 2024 
Stage 3 2 Stage 4 Stage 5 Stage 3 2 Stage 4 Stage 5 Stage 3 2 Stage 4 Stage 5 
JetBlue Airways 91,803 97,486 93,703 0% 44% 56% 0% 46% 54% 0% 41% 59% 
Delta Air Lines 46,893 58,538 58,176 0% 72% 28% 0% 61% 39% 0% 73% 27% 
Republic Airlines 46,247 45,002 52,705 0% 100% 0% 0% 100% 0% 1% 99% 0% 
American Airlines 41,255 32,623 34,938 0% 58% 42% 0% 62% 38% 0% 65% 35% 
United Airlines 22,123 24,764 24,716 0% 83% 17% 0% 59% 41% 0% 68% 32% 
Spirit Airlines 6,717 9,537 13,664 0% 26% 74% 0% 5% 95% 0% 11% 89% 
Southwest Airlines 10,535 12,218 13,186 0% 91% 9% 0% 72% 28% 0% 64% 36% 
Alaska Airlines 4,404 5,019 5,119 0% 98% 1% 0% 99% 1% 0% 98% 2% 
Envoy Airlines 2,039 3,475 3,828 6% 94% 0% 3% 97% 0% 2% 98% 0% 
Federal Express 4,722 3,479 3,147 4% 96% 0% 10% 84% 6% 7% 85% 8% 
Jazz Air Inc. 4,557 2,906 2,929 9% 91% 0% 0% 100% 0% 0% 100% 0% 
Frontier Airlines 1,489 1,039 2,914 0% 33% 67% 0% 41% 59% 0% 31% 69% 
Piedmont Airlines 2,955 2,700 2,678 0% 2% 98% 0% 6% 94% 0% 5% 95% 
Air Canada 625 2,244 2,458 0% 5% 95% 0% 2% 98% 0% 3% 97% 
United Parcel Service 2,114 2,089 2,338 0% 99% 1% 0% 98% 2% 0% 98% 2% 
Aer Lingus 1,910 2,034 2,049 0% 68% 32% 0% 66% 34% 0% 64% 36% 
British Airways 1,703 2,002 1,981 0% 90% 10% 0% 100% 0% 0% 95% 5% 
Lufthansa 1,446 1,686 1,611 0% 28% 72% 0% 17% 83% 0% 27% 73% 
Icelandair 1,450 1,390 1,496 0% 49% 51% 0% 54% 46% 0% 48% 52% 
TAP - Air Portugal 965 1,250 1,302 0% 98% 2% 0% 100% 0% 0% 93% 7% 
Air France 961 972 1,137 0% 3% 97% 0% 16% 84% 0% 15% 85% 
Virgin Atlantic 670 727 1,108 0% 0% 100% 0% 0% 100% 0% 0% 100% 
Iberia Air Lines Of Spain 696 940 1,089 0% 99% 1% 0% 87% 13% 0% 84% 16% 
Swiss Air 804 1,044 1,054 2% 0% 98% 1% 0% 99% 1% 0% 99% 
Allegiant Air 1,154 1,018 1,016 0% 100% 0% 0% 100% 0% 0% 100% 0% Noise Supporting Documentation I-78

Boston Logan International Airport 2023/2024 EDR I 
Table I-38 Percentage of Airline Operations in Stage 3, 4 or 5 Aircraft, 2022-2024 
Airlines 1 
2022 2023 2024 2022 2023 2024 
Stage 3 2 Stage 4 Stage 5 Stage 3 2 Stage 4 Stage 5 Stage 3 2 Stage 4 Stage 5 
SATA International
Airlines 648 750 962 0% 0% 100% 0% 0% 100% 1% 10% 89% 
COPA Airlines 228 646 939 0% 100% 0% 0% 100% 0% 0% 58% 42% 
Qatar Airways 728 726 872 0% 2% 98% 0% 1% 99% 0% 0% 100% 
Emirates Airlines 702 732 736 0% 99% 1% 0% 100% 0% 0% 100% 0% 
Japan Airlines 730 730 732 0% 0% 100% 0% 0% 100% 0% 0% 100% 
Korean Air Lines Co., Ltd. 366 618 732 0% 51% 49% 0% 66% 34% 0% 75% 25% 
Turkish Airlines 742 658 690 0% 0% 100% 0% 0% 100% 0% 0% 100% 
Scandinavian Airlines 389 544 664 0% 0% 100% 0% 0% 100% 0% 0% 100% 
Fly Play Corp 453 696 648 0% 0% 100% 0% 0% 100% 0% 0% 100% 
Cathay Pacific 83 313 622 0% 0% 100% 0% 0% 100% 0% 0% 100% 
BermudAir Limited 0 192 622 N/A N/A N/A 2% 98% 0% 0% 100% 0% 
Sun Country Airlines 416 472 557 0% 100% 0% 0% 100% 0% 0% 100% 0% 
Avianca 0 439 521 N/A N/A N/A 0% 36% 64% 0% 17% 83% 
ABX Air, Inc. 147 214 500 95% 5% 0% 88% 12% 0% 63% 37% 0% 
ITA Airlines 484 506 478 0% 100% 0% 0% 92% 8% 0% 96% 4% 
TACA International
Airlines, S.A. 0 186 459 N/A N/A N/A 0% 26% 74% 0% 5% 95% 
Hawaiian Airlines 422 444 446 0% 0% 100% 0% 0% 100% 0% 0% 100% 
Etihad Airways PJSC
Corporation 0 0 374 N/A N/A N/A N/A N/A N/A 0% 1% 99% 
KLM Royal Dutch Airlines 364 348 364 0% 98% 2% 0% 68% 32% 0% 24% 76% 
El Al Israel Airlines Ltd. 164 284 338 0% 99% 1% 0% 95% 5% 0% 99% 1% 
LATAM Airlines 54 316 312 0% 100% 0% 0% 100% 0% 0% 100% 0% 
Hainan Airlines 0 32 312 N/A N/A N/A 0% 0% 100% 0% 0% 100% 
Austrian Airlines 0 0 242 N/A N/A N/A N/A N/A N/A 0% 100% 0% Noise Supporting Documentation I-79

I Boston Logan International Airport 2023/2024 EDR 
Table I-38 Percentage of Airline Operations in Stage 3, 4 or 5 Aircraft, 2022-2024 
Airlines 1 
2022 2023 2024 2022 2023 2024 
Stage 3 2 Stage 4 Stage 5 Stage 3 2 Stage 4 Stage 5 Stage 3 2 Stage 4 Stage 5 
Condor Flugdienst 104 79 236 0% 52% 48% 0% 0% 100% 0% 0% 100% 
WestJet Airlines 144 164 200 0% 100% 0% 0% 81% 19% 0% 73% 27% 
SkyWest Airlines 782 3,920 10 0% 100% 0% 0% 100% 0% 0% 60% 40% 
Amerijet International 8 293 16 100% 0% 0% 100% 0% 0% 100% 0% 0% 
Source: Massport and HMMH, 2025. 
Notes: N/A: Not available. 
Operations for some carriers differ with those in Chapter 3, Activity Levels and Forecasting , and Chapter 8, Air Quality and Greenhouse Gas Emissions, because this table only includes jet aircraft, not
turboprops, and it includes both scheduled and unscheduled air carriers. 
1 This table only includes airlines with more than 100 flights in 2023 or 2024. 
2 Stage 3 means originally manufactured as a certificated Stage 3 aircraft under FAR Part 36 and not meeting Stage 4 or Stage 5 noise standards.. Stage 4 or Stage 5 listings means the aircraft meets Stage
4 or Stage 5 requirements, even if not certificated as such Noise Supporting Documentation I-80

Boston Logan International Airport 2023/2024 EDR I 
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I Boston Logan International Airport 2023/2024 EDR 
I.7 Massport CAC Executive Committee Brief Slide Deck on
Runway 27 Departure Procedure Noise Supporting Documentation I-82

1 1 
MCAC Executive Committee Brief 
BOSTON LOGAN INTERNATIONAL AIRPORT RWY 27
8/13/2024 
2 2 
• Block 1 & Block 2 Publication Timeline
• Background
• Runway 27 Departure History
• Standard Instrument Departure (SID) Updates
• Runway 27 Departure Corridor (Old vs New)
• Flight Track Comparison
• NEPA Review
• Questions
• Future Steps – TBD 
AGENDA 
8/13/2024 Noise Supporting Documentation I-83

3 3 
Block 1 
• Task: RNAV (RNP) RWY 33L procedure/ Move Runway 15R Departure Flight Path North of Hull
Peninsula
• Block 1 procedures published on December 2, 2021 
Block 2 
• Task: Modify the RNAV Departures with a speed restriction to enable an earlier turn to the east,
shifting aircraft tracks north away from Hull. Implement a new overwater RNAV approach for
Runway 22L that crosses the Nahant Causeway from the east to join a 4-mile final approach.
• Block 2 Departure Procedures Published on November 30, 2023
• When the FAA opens up a procedure it has to be brought up to current criteria. 
9 28 Day interim and 56 day publication cycle 
8/13/2024 
Block 1 & Block 2 Publication Timeline 
4 4 
• The FAA and Massport signed a Memorandum of Understanding (MOU) in
2016 establishing a framework to explore and evaluate possible changes
to satellite-based air traffic procedures at Boston Logan International
Airport to reduce the impact from aircraft overflight noise.
• Over a number of years, FAA, Massport, MCAC and MIT worked
collaboratively within the MOU framework to successfully design and
implement procedures as requested by MCAC.
• The Runway 27 Standard Instrument Departure (SID) update is a result of
implementing Block 1 and 2 community requested procedures.
• All runways that are part of the SIDs procedure design must be updated to current safety
criteria. Therefore, the R27 heading to KIRAA changed from 234 to 237 as part of optimized
Terminal Instrument Procedures (TERPS) Departure criteria. 
Background 
8/13/2024 Noise Supporting Documentation I-84

5 5 
• Implemented in 1996 as a standard (Non-Area Navigation
(RNAV) noise abatement procedure after an Environmental
Impact Statement (EIS)/Record of Decision (ROD)
• Goal was to get 68% of flight tracks within a defined noise
abatement corridor of more compatible land use
• RNAV technology is used to improve the precision of flight
tracks within the corridor
• After 15+ years and multiple FAA modifications to the RNAV
procedure, the goal of 68% within the corridor was achieved 
Runway 27 Departure History 
8/13/2024
6 6 8/13/2024 
Example SID:
BLZZR6 Noise Supporting Documentation I-85

7 7 
• Current track shows that aircraft depart Runway 27 on a compass heading of 272. When able, aircraft
intercept the fixed path of 237 to KIRAA. This is referred to as a “course to fix” path. There have been no
changes to flight paths after KIRAA.
• The heading to KIRAA changed by 3 degrees to meet current safety criteria within TARGETS. 
9 KIRAA was 234 ° and is now published as 237 ° 
9 TARGETS = procedure development software
• KIRAA Waypoint originated JAN 2000, and has moved twice but not since JAN 2017 . 
Standard Instrument Departure (SID) Changes 
Previous Current 
8/13/2024
8 8 
Runway 27 Departure Corridor 
Old BLZZR
departure showing
234 degree
heading to KIRAA 
8/13/2024 Noise Supporting Documentation I-86

9 9 
Currently Published Procedure 
Current BLZZR
departure showing
237 degree
heading to KIRAA 
10 10 
RWY 27 Departure Corridor Flight Tracks 
Nov 2019
2680 TRACKS
RWY 27 Departures only
Dec 2023
1445 TRACKS
RWY 27 Departures only 
8/13/2024 Noise Supporting Documentation I-87

11 11 
• On May 16, 2024, the FAA completed a Noise Screening Analysis Report for the
proposed KBOS RNAV SID. Using the Terminal Area Route Generation, Evaluation, and
Traffic Simulation (TARGETS) Environmental Plug-in tool and the Aviation Environmental
Design Tool (AEDT), the analysis resulted in no reportable or significant impacts resulting
from the proposed action.
• The noise screening showed DNL increases from 1.4 to 1.7, and DNL decreases from 1.7
to 2.7.
• Baseline and alternate DNL levels are below 65 db
• The FAA’s criteria for reportable and significant changes are:
• Significant: ±1.5 dB at DNL 65 dB or higher
• Reportable: ±3 dB at DNL 60 dB to less than 65 dB
• Reportable: ±5 dB at DNL 45 dB to less than 60 dB 
NEPA Review 
7/12/2024
12 12 
QUESTIONS Noise Supporting Documentation I-88

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I Boston Logan International Airport 2023/2024 EDR 
I.8 Responses to Massport CAC on Changes to Runway 27
Departure Procedures Noise Supporting Documentation I-90

New England Region 
Office of the Regional Administrator 
1200 District Avenue 
Burlington, MA 01803 
October 16, 2024 
Dear Aaron Toffler & Massport Community Advisory Executive Committee: 
The information below has been prepared for the MCAC in response to your questions regarding
the changes to the BOS Rwy 27 departure procedure. Thank you for your continued cooperation
in ensuring aviation safety and efficiency. Please do not hesitate to reach out for clarification of
the information below, should you require it. 
The FAA indicated that the NAV database is updated every 28 days. Is this database publicly
available? 
Answer: The FAA 28-day NASR Subscription, which is used to develop and update Instrument
Approach Procedures, digital products, aeronautical charts, and related publications, is available
to the public at
https://www.faa.gov/air_traffic/flight_info/aeronav/aero_data/NASR_Subscription/ 
MCAC would like to be able to see all approach and departure procedures at Logan on a map
that has enough granularity for us to be able to identify which communities (neighborhoods) are
impacted by which procedures. 
Answer: The attached two Google Earth topographic map images show the 237 vs. 234
departure track headings. By zooming in on these maps, one can depict which communities
would be most impacted. 
The MCAC requests that the FAA and Massport work together to produce maps that show all
departure and arrival tracks for each runway configuration showing populations impacted on
the ground 
Answer: This request can be coordinated with Massport 
Which of the four published changes implemented from Block 1 and/or Block 2 precipitated the
change in the Runway 27 departure procedure for safety reasons? 
Answer: MCAC’s Block 1 request was to move the Runway 15R departure flight path north of
the Hull peninsula. The FAA honored that request, and the procedures were published December
2, 2021. MCAC’s Block 2 request was to modify the RNAV departures with a speed restriction
to enable an earlier turn to the east, shifting aircraft tracks north away from Hull. Once we open
up a procedure, no matter how minor the request is, the FAA has to look at the procedure as an
entirety. When we opened up the procedure for Block 2, we honored the requested change;
however, during the design process, our TARGETS software automatically amended the
RWY27 transitions on the SSOXS and LBSTA departures to the minimum distance requirement
for a VI-CF segment (which led to the 237 heading). The change was inadvertent, as the RWY
27 transition had not been discussed as part of the Block 2 discussions with MCAC. Noise Supporting Documentation I-91

2 
How was the target of 68% determined? 
Answer: For the departure gate corridor off Runway 27, the 68% desired result for compliance
was agreed upon by the Logan CAC (currently MCAC) Massport and the FAA. During the fall
of 1996, the LOGAN SID was amended to begin the process. 
What is the FAA’s definition of a “noise abatement corridor”? 
Answer: The FAA does not define verbiage; however, the interpretation of a noise abatement
corridor includes strategies and techniques aimed at reducing noise thru a passage. 
How is it assigned? 
Answer: Noise abatement is normally coordinated through an airport. In this case, the “noise
abatement corridor” was a decision coordinated between Logan CAC (currently MCAC),
Massport, and the FAA. 
What are the benefits? 
Answer: The benefits are the reduction of aircraft noise impacts on communities. 
What could cause it to be amended or removed? 
Answer: There are multiple reasons noise abatement could be amended or removed, such as
safety concerns, the airport conducting a new Part 150 (a voluntary FAA program that sets
guidelines for airport operators to document aircraft noise exposure, and to establish noise
abatement and compatible land use programs), or as a result of a community making a request.
Please remember noise abatement decisions are always second to safety and efficiency. 
How was that track determined to be a “noise abatement corridor”? 
Answer: The track was constructed utilizing the LOGAN departure based on a point where
aircraft would turn first when established at the BOS 2.2 DME and then fly a 235 track. Changes
in wind direction and speed were also determining factors. 
The FAA indicated that there have been multiple (minor) modifications of the RNAV over 15+
years. Were these modifications publicly noticed? 
Answer: Although a public notice did not go out, there were numerous meetings with updates
that took place with MCAC, Massport, MIT, and the FAA in the past. Multiple iterations of
proposed RNAV designs were modified within a 15+ year time period to meet the needs of the
community. 
Was the MCAC notified? 
Answer: The MCAC was notified on the proposed requests; however, there was an inadvertent
oversight on the Runway 27 transition in Block 2. 
What precipitated these modifications? 
Answer: It is the FAA’s understanding that MCAC has it internal processes when dealing with
community driven requests for proposed changes at BOS Logan. The history of these proposed
changes can be found on the MCAC’s meeting website. Noise Supporting Documentation I-92

3 
Was it a result of the standard review of procedures? 
Answer: No 
The NEPA analysis that determined that this was not a significant change – is this an internal
FAA review that the FAA certifies is compliant with NEPA? Can we be notified when this is
happening? Can we participate? Is there any documentation of the analysis other than the
result? 
Answer: The internal NEPA analysis using the TARGETS tool and the Airport Environmental
Design Tool found no reportable or significant noise impacts, ensuring NEPA compliance. The
FAA collaborates with MCAC and Massport under an MOU to engage with affected
communities for MIT's Block 1 and 2 recommendations. 
Sincerely, 
Lindsey White 
Community Engagement Officer 
New England Regional Administrator’s Office 
2 Enclosures Noise Supporting Documentation I-93