2019 Annual Report

Fly Quiet Program O’Hare International Airport

Visit the O’Hare Noise Webpage on the Internet at www.flychicago.com/oharenoise 2019 Annual Report

BACKGROUND

On June 17, 1997, the City of Chicago announced that airlines operating at O’Hare International Airport had agreed to use designated noise abatement flight procedures in accordance with the Fly Quiet Program. The Fly Quiet Program was implemented in an effort to further reduce the impacts of aircraft noise on the surrounding neighborhoods.

The Fly Quiet Program is a voluntary program that encourages pilots and air traffic controllers to use designated nighttime preferential runways and flight tracks developed by the Chicago Department of Aviation (CDA) in cooperation with the O'Hare Noise Compatibility Commission, the airlines, and the air traffic controllers. These preferred routes direct aircraft over less-populated areas, such as forest preserves, highways, as well as commercial and industrial areas.

As part of the Fly Quiet Program, the Chicago Department of Aviation prepares a Fly Quiet Report. This report is shared with CDA staff, the O'Hare Noise Compatibility Commission, the airlines, the Federal Aviation Administration (FAA), and the general public. The Fly Quiet Report contains detailed information regarding Fly Quiet Mode, runway use, flight operations, flight tracks, and noise complaints and 24-hour tracking of ground run-ups. The data presented in this report is compiled from the Airport Noise Management System (ANMS) and airport operation logs.

FLY QUIET MODE (FQM)

The FAA considers nighttime hours as 10:00 p.m. - 7:00 a.m.1 It is the CDA’s goal for the Fly Quiet Program to occur during the entire nine-hour nighttime period of 10:00 p.m. to 7:00 a.m., however due to operational demand by the airlines and traveling public, Fly Quiet is typically limited to a period less than nine hours. Fly Quiet Mode, the period of time in Fly Quiet, starts each night on or after 10:00 p.m., once demand allows for two departure runways and one arrival runway and allows for the use of the preferential flight tracks as outlined in the CDA’s Fly Quiet Manual. Demand for the majority of the night allows for one arrival runway and one departure runway. Once demand increases in the morning where additional runways are needed and preferential flight tracks can no longer be utilized, Fly Quiet Mode stops.

Highlights for 2019 include:

Average Start Time: 11:10 p.m. Average Stop Time: 5:45 a.m. Average Nightly Time in FQM: 6:35 Average Nightly Operations in FQM: 97

1 Airport Noise Compatibility Planning (14 CFR Part 150)

Chicago Department of Aviation Page 1 2019 OPERATIONS

O’Hare has seven runways that are all utilized at different times depending on a number of conditions including weather, airfield pavement and construction activities, and air traffic demand.

The Runway Use Reports disclose runway utilize for the period and compares the average percentage of use for each runway during the current year. The percentage of use for departures and arrivals is shown graphically for each runway. This data is presented for all aircraft types during Fly Quiet Mode. The Nighttime Hourly Operations Report compares the arrivals and departures by hour in 15 minute increments to the current year. Percentage is a ratio whereas a percentage point is the difference between two percentages.

Highlights for 2019 include:

Departures Arrivals Most used nighttime departure runway: 28R – 43% Most used nighttime arrival runway: 28C – 27% 28R night departures increased by 3pp from 2018 28C night arrivals increased by 8pp from 2018 4L night departures decreased by 2pp from 2018 27L night arrivals decreased 4pp from 2018 pp = Percentage Points Nighttime operations represent 12% of the overall daily operations

PREFERENTIAL FLIGHT TRACKS

As part of the Fly Quiet Program, the Chicago Department of Aviation worked with the O'Hare Noise Compatibility Commission, the airlines, and the air traffic controllers to identify preferred runways and flight tracks for nighttime operations at O’Hare. The preferred routes direct aircraft over less-populated areas in an effort to limit the effects of noise on the surrounding communities.

Adherence to nighttime departure preferential flight tracks is measured by the ANMS. An average deviation graphic and table is provided for all runways. The Nighttime Departure Track Report measures FQM deviation (in nautical miles) from the preferred flight tracks and is divided into three categories:

Highlights for 2019 include:

Categories Percent Deviation

less than 0.5 miles 85% between 0.5 and 1.0 miles 12% greater than 1.0 miles 3%

A detailed airline deviation summary is also provided for the current year that shows total arrivals, total departures, and average FQM deviation (in nautical miles) from the preferred flight tracks.

Chicago Department of Aviation Page 2 2019 NOISE COMPLAINTS

The Chicago Department of Aviation maintains a toll-free O’Hare noise hotline (1-800-435-9569) and an online service at www.flychicago.com/oharenoise for citizens to express their concerns about particular incidents or about aircraft noise levels in general. The Nighttime Noise Complaint Report summarizes the number of complaints received and where the complainants were located. The tabular report lists the number of complaints by community as well as the number of individual complainants. The graph illustrates the nature of the complaints during the current quarter. Complaints include all complaints made within the State of Illinois to the O’Hare Noise Hotline toll-free number or online service.

GROUND RUN-UPS

Ground run-ups are aircraft engine tests that are performed to ensure that the engines are working properly after maintenance is performed. Ground run-ups typically occur at night and generate high levels of noise for extended periods of time. In 1997, the CDA constructed a ground run-up enclosure (GRE) at O’Hare to help reduce the noise impacts of ground run-ups on the communities surrounding the airport. This facility was the first of its kind in the United States. When it is not possible to use the GRE, run-ups are performed on one of the three identified alternative locations. In the fall of 2017, the CDA relocated the GRE from its original location to a new location approximately 1,100 feet to the northeast, but still located on the Scenic Hold Pad.

The Airline Ground Run-up Report displays the total number of ground run ups from the current year by airline. The Aircraft Ground Run-up Report displays the total number of ground run ups from the current year by aircraft. Both reports compare the percent utilization of the GRE facility to the percent utilization of other locations for ground run-ups.

NOISE

The Nighttime Aircraft Noise Report summarizes noise measurements from each of the 36 noise monitors located around O’Hare. The data presented summarizes the Equivalent Sound Level (Leq). Leq is used to identify the average sound level over a given period of time (in this case 10 p.m. to 7 a.m.) and is the metric used for this analysis as it is the most appropriate noise measure for periods of time less than 24 hours.

Chicago Department of Aviation Page 3 2019 Nighttime Hourly Operations Report Chicago O'Hare International Airport Period: January 1, 2019 through December 31, 2019 Time of Day: 10:00 p.m. to 7:00 a.m.

Average Arrivals and Departures by Hour

25 FQM START FQM STOP 11:10 PM 5:45 AM 20

15 Average Fly Quiet Duration – 6:35, 97 Operations 10

5

0

5 Average Average Daily Operations 10

15

20 Nighttime Duration – 9:00, 289 Operations 25

10 p.m. 11 p.m. 12 a.m. 1 a.m. 2 a.m. 3 a.m. 4 a.m. 5 a.m. 6 a.m. 2019 Arrivals 2018 Arrivals 2019 Departures 2018 Departures

Chicago Department of Aviation Page 4 2019 Runway Use Report Chicago O'Hare International Airport Period: January 1, 2019 through December 31, 2019 Time of Day: 10:00 p.m. to 7:00 a.m.

Average Runway Use (10 p.m. to 7 a.m.) Source: Airport Noise Management System (ANMS) Runway Utilization 4L 4R 9L 9R 10L 10C 10R 22L 22R 27L 27R 28L 28C 28R

Average Daily Departures 2019 1 0 0 24 22 2 0 21 0 0 0 0 4 55 2018 3 0 0 23 20 2 0 17 0 0 0 0 4 46 Average Daily Arrivals 2019 0 1 9 2 8 41 1 0 2 41 8 0 44 8 2018 0 0 10 2 12 37 3 0 0 46 11 0 30 9

Departures (10 p.m. to 7 a.m.) Arrivals (10 p.m. to 7 a.m.) 50% 50%

40% 40%

30% 30%

20% 20%

10% 10%

0% 0%

Percentage Departure Utilization Percentage Arrival Utilization 2019 2019 0 0 # 1

0 0 5 5

0 0

0 18 1 25

0 0 43 17 5 5

3 2 25 27 0 0 0 # 1 0

0 0 17 0 0

Chicago Department of Aviation Page 5 2019 Runway Use Report Chicago O'Hare International Airport Period: January 1, 2019 through December 31, 2019 Time of Day: Fly Quiet Mode (FQM)

Average Runway Use (FQM) Source: Airport Noise Management System (ANMS) Runway Utilization 4L 4R 9L 9R 10L 10C 10R 22L 22R 27L 27R 28L 28C 28R

Departures 0 0 0 3 7 2 0 4 0 0 0 0 4 14

Arrivals 0 1 0 0 7 17 0 0 1 13 0 0 18 7

Departures (FQM) Arrivals (FQM) 50% 50%

40% 40%

30% 30%

20% 20%

10% 10%

0% 0%

Percentage Departure Utilization Percentage Arrival Utilization 2019 2019 0 1 # 2

0 0 0 0

0 0

1 9 0 19

0 0 41 21 11 11

11 5 27 29 0 0 0 # 0 0

0 0 11 0 1

Purple denotes Fly Quiet preferential departure and arrival runways.

Chicago Department of Aviation Page 6 2019 Nighttime Preferential Flight Track Summary (1/2) Chicago O'Hare International Airport Period: January 1, 2019 through December 31, 2019 Time of Day: Fly Quiet Mode (FQM)

Average Departure Airlines Type1 Arrivals Departures Deviation (nautical miles) ABX Air C 1 -- -- Aer Lingus P -- 3 0.47 Aerologic C 45 114 0.36 AeroMexico P 533 624 0.29 AeroUnion C -- 2 0.40 Air Canada P 23 8 0.19 Air Canada Express/Jazz P 10 -- -- Air Canada Express/Sky Regional P 31 10 0.22 Air China Cargo C 1 7 0.75 Air Choice One P 1 -- -- Air France P -- 1 0.15 Air France Cargo C 8 116 0.21 Air India P 22 7 0.36 AirBridge Cargo Airlines C 44 112 0.41 P 569 74 0.23 All Nippon Airways P 3 3 0.37 P 3,731 1,911 0.30 American Eagle/Envoy P 622 447 0.24 American Eagle/PSA Airlines P 47 11 0.19 Antonov Airlines C 1 -- -- Asiana Airlines P -- 182 0.34 Asiana Cargo C 110 196 0.24 C 277 563 0.24 Austrian Airlines P -- 1 0.03 Avianca P 32 104 0.32 British Airways P -- 15 0.44 CargoLogicAir C 44 77 0.34 Cargolux Airlines C 166 230 0.39 Cargolux Italia C 1 -- -- Cathay Pacific Cargo C 52 115 0.50 China Airlines Cargo C 50 54 0.36 China Cargo Airlines C 32 47 0.40 China Southern Airlines C 95 32 0.33 Copa Airlines P 305 44 0.37 P 650 159 0.22 / P 3 7 0.19 Emirates P -- 41 0.07 Emirates SkyCargo C 73 120 0.30 Ethiopian Airlines P 6 -- -- Etihad Airways P 1 4 0.30 European Air Transport C 2 -- -- EVA Air P 1 204 0.41 EVA Air Cargo C 26 32 0.32 FedEx C 1,176 645 0.24 Green represents a deviation of less than 0.5 nautical miles Orange represents a deviation between 0.5 and 1.0 nautical miles Red represents a deviation greater than 1.0 nautical mile Note 1: Passenger Carrier (P) or Dedicated Cargo (C) Chicago Department of Aviation Page 7 2019 Nighttime Preferential Flight Track Summary (2/2) Chicago O'Hare International Airport Period: January 1, 2019 through December 31, 2019 Time of Day: Fly Quiet Mode (FQM)

Average Departure Airlines Type1 Arrivals Departures Deviation (nautical miles) Finnair P -- 4 0.15 P 692 238 0.27 General Aviation -- 187 141 0.39 Hainan Airlines P 3 28 0.35 Iberia Airlines P -- 2 0.46 Icelandair P -- 45 0.22 Interjet P 642 698 0.31 JetBlue Airways P 444 141 0.29 C 89 87 0.28 Korean Air Cargo C 174 276 0.27 LATAM Cargo Colombia C -- 1 0.15 LOT P 9 93 0.43 Lufthansa P -- 168 0.37 Lufthansa Cargo C 34 107 0.37 National Air Cargo C 5 3 0.09 Nippon Cargo Airlines C 7 99 0.34 Norwegian Air UK P 1 8 0.28 C 10 5 0.40 Qantas Freight C 50 85 0.34 Qatar Airways P -- 2 0.20 Qatar Airways Cargo C 173 259 0.33 Republic Airlines P 185 78 0.24 Royal Jordanian P -- 3 0.37 Scandinavian Airlines P -- 41 0.37 Silk Way West Airlines C 27 53 0.53 C 30 30 0.16 Sky West Aviation P 1,430 485 0.28 C -- 7 0.79 P 1,507 520 0.26 P 2 7 0.10 Suparna Airlines C 26 39 0.32 TAP Air Portugal P -- 3 0.34 Turkish Airlines P 70 24 0.39 Turkish Cargo C -- 123 0.38 P 7,019 761 0.24 / P 218 163 0.26 United Express/ExpressJet P 105 86 0.30 United Express/Gojet P 94 78 0.30 United Express/Trans States P 46 90 0.21 UPS C 736 236 0.24 VivaAerobus P 5 7 0.36 Volaris P 155 191 0.32 C 7 69 0.34 Overall 22,976 11,906 0.29 Green represents a deviation of less than 0.5 nautical miles Orange represents a deviation between 0.5 and 1.0 nautical miles Red represents a deviation greater than 1.0 nautical mile Note 1: Passenger Carrier (P) or Dedicated Cargo (C) Chicago Department of Aviation Page 8 2019 Nighttime Departure Track Report Chicago O'Hare International Airport Period: January 1, 2019 through December 31, 2019 Time of Day: 10:00 p.m. to 7:00 a.m.

11,906 FQM Departures 33,905 Non-FQM2 Departures 45,811 Total Departures

Preferential Flight Track Existing Runways Future Runways

Runway Departures (in %) versus Deviation (in nautical miles) Deviation 4L 4R 9L 9R 10C 10L 10R 22L 22R 27L 27R 28C 28L 28R (# tracks) < 0.5 90% 58% n/a 95% 92% n/a 49% 87% n/a n/a 90% (8,464) 0.5 < 1.0 7% 21% n/a 4% n/a1 6% n/a 45% n/a1 3% n/a n/a1 n/a 8% (1,194) >1.0 3% 21% n/a 1% 2% n/a 6% 10% n/a n/a 2% (247)

n/a = not applicable Note 1: Runways 10C, 22R and 28C are shown in white and do not have preferential flight tracks. Note 2: Non-FQM departures are shown in purple. Flight tracks shown until 3,000' Mean Sea Level (MSL). Chicago Department of Aviation Page 9 2019 Nighttime Noise Complaint Report Chicago O'Hare International Airport Period: March 1, 2019 through December 31, 20192 Time of Day: 10:00 p.m. to 7:00 a.m.

Total Complaints Total Complaints Total Complaints Households Households Households for the Year for the Year for the Year Community1 Community1 Community1 2 2Q 3Q 4Q 2 2Q 3Q 4Q 2 2Q 3Q 4Q 1Q 2019 1Q 2019 1Q 2019 19 19 19 19 19 19 19 19 19 19 19 19

Addison ------1 1 Glencoe -- -- 1 1 2 Skokie 3 3 2 5 384 Algonquin ------1 2 Glenview 6 8 8 12 319 Sleepy Hollow ------Arlington Heights 1 12 8 10 359 Hampshire 1 1 1 1 166 South Barrington -- -- 3 1 4 Barrington -- -- 1 -- 1 Hanover Park 2 2 4 3 441 South Elgin -- 2 2 1 217 Bartlett 4 4 5 4 845 Harwood Heights 1 7 10 4 71 St. Charles 2 3 3 2 102 Batavia ------1 1 Hillside 2 1 1 3 58 Unincorp. Cook 2 2 1 4 39 Bensenville 3 7 5 2 25 Hoffman Estates 2 1 3 2 76 Villa Park -- -- 1 2 3 Berkeley ------1 1 Itasca 2 10 12 6 4,625 Wayne 2 2 1 -- 22 Berwyn ------Libertyville ------1 3 West Chicago -- 2 1 1 4 Bloomingdale 4 9 10 2 439 Lincolnwood 1 3 3 3 318 West Dundee -- 1 2 -- 4 Buffalo Grove ------Lombard -- -- 2 2 16 Western Springs 1 1 1 1 356 Burlington ------Long Grove ------Westmont -- -- 1 -- 3 Carol Stream -- -- 1 1 4 Medinah -- 5 4 2 36 Wheaton ------Carpentersville -- 1 1 1 33 Melrose Park -- 1 -- -- 1 Wilmette -- 1 1 3 69 Chicago 77 189 220 127 22,852 Montgomery ------Winfield 1 1 1 1 377 Ward 38 11 22 28 15 2,414 Morton Grove -- 1 1 -- 2 Winnetka -- 1 -- -- 1 Ward 39 18 37 35 19 5,818 Mount Prospect 1 4 1 2 13 Wood Dale 9 30 30 27 2,350 Ward 40 2 7 21 15 815 Mundelein -- 1 1 1 4 Ward 41 24 73 62 34 6,292 Niles 2 7 5 4 1,883 Total 197 545 557 445 52,165 Ward 45 14 24 34 21 2,662 Norridge 6 44 27 8 1,227 Ward Other 8 26 40 23 4,851 Northbrook 1 4 3 1 158 Deerfield -- 1 -- -- 1 Northfield ------1 1 METHOD OF COMPLAINT Des Plaines 5 13 10 25 427 Northlake -- 1 1 -- 3 Total % of Total Downers Grove ------Oak Park -- 1 1 1 5 Website 49,717 95.3% Elburn 1 ------1 Palatine 2 2 4 1 651 App 1,786 3.4% Elgin 1 4 2 1 376 Park Ridge 30 92 71 80 7,650 Telephone 662 1.3% Elk Grove Village 9 20 21 30 1,536 Prospect Heights ------Total 52,165 100% Elmhurst 3 13 18 37 1,338 River Forest ------NATURE OF COMPLAINT Elmwood Park ------River Grove 1 -- 1 -- 2 Evanston 1 2 2 1 1,145 Riverside ------Total % of Total Frankfort ------Rolling Meadows ------Aircraft Noise 44,297 84.9% Franklin Park ------Roselle 2 5 8 2 43 Low Flying 3,177 6.1% Vibration 963 1.9% Geneva 1 -- 1 -- 2 Rosemont 1 1 3 -- 24 Frequency 3,716 7.1% Gilberts 1 1 1 1 454 Schaumburg -- 4 11 -- 38 Other 12 0.0% Glen Ellyn -- -- 1 1 5 Schiller Park 3 14 13 9 546 Total 52,165 100% Note 1: Complaints made within the State of Illinois from households with verifiable addresses. Note 2: Complaints for January 1, 2019 through February 28, 2019 are not included due to migration to the new 311 software platform.

Chicago Department of Aviation Page 10 revised 2019 Chicago Department of Aviation Page 11 2019 Nighttime Aircraft Noise Report Chicago O'Hare International Airport Period: January 1, 2010 through December 31, 2019 Time of Day: 10:00 p.m. to 7:00 a.m. Metric: Aircraft Leq

1 Site Last 10 Years Monitored Noise Levels Community # 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019

1 Arlington Heights 49.8 51.5 51.0 50.0 45.9 48.3 48.8 48.1 48.4 42.9 2 Melrose Park 45.4 44.1 48.4 44.3 46.5 47.6 48.1 49.2 51.9 42.9 3 Bensenville 51.8 52.2 53.0 51.9 54.6 54.7 54.9 54.7 55.5 56.0 4 Schiller Park 47.3 44.8 50.1 46.7 49.6 43.4 49.3 47.4 47.9 47.3 5 Chicago 50.8 49.8 49.5 48.1 61.4 52.1 52.0 54.7 51.9 50.5 7 Des Plaines 43.6 45.1 48.3 43.1 43.8 41.9 40.6 40.6 42.7 42.8 8 Des Plaines 49.1 50.7 51.3 50.4 50.4 46.8 45.2 50.3 50.6 47.8 10 Rolling Meadows 52.3 50.6 51.5 54.9 47.2 44.5 48.7 46.8 41.3 40.4 11 Chicago 46.6 47.1 53.4 50.2 54.2 44.3 45.4 46.2 46.2 46.4 12 Elk Grove Village 49.4 48.6 55.4 51.1 56.9 51.6 53.3 51.3 51.1 50.1 13 Elk Grove Village 65.2 64.3 64.2 64.3 56.9 59.7 60.3 57.4 55.0 54.3 14 Elk Grove Village 51.9 52.1 52.6 52.7 49.7 52.7 52.4 50.0 46.8 47.3 15 Franklin Park 47.9 47.4 50.1 46.0 43.6 40.8 43.5 40.9 42.2 41.0 16 Franklin Park 55.9 55.0 61.5 54.4 54.6 55.7 54.4 54.8 56.0 56.1 17 Harwood Heights 58.2 61.3 57.2 56.6 69.4 57.2 57.3 57.7 57.2 55.6 18 Norridge2 ------52.3 52.4 19 Stone Park 42.7 41.3 50.8 41.5 45.2 41.8 40.6 41.4 43.8 45.2 20 Mount Prospect 51.8 51.9 52.8 52.5 57.8 46.8 46.9 44.7 48.7 46.0 21 Mount Prospect 45.6 46.4 45.1 44.1 37.3 41.0 43.2 39.7 41.5 43.1 22 Norridge 59.0 60.3 58.6 59.2 57.8 56.8 59.0 60.7 59.2 58.7 23 Northlake 55.5 54.5 55.2 55.2 53.3 55.9 54.4 54.8 55.0 55.0 24 Park Ridge 45.5 44.5 45.5 42.8 44.4 42.0 44.2 45.3 45.5 41.0 25 Park Ridge 47.6 47.8 53.2 47.9 51.9 52.4 54.0 54.0 54.7 55.2 26 Park Ridge 47.3 47.6 47.3 45.4 46.8 45.1 45.8 47.3 48.8 49.4 27 Rosemont 55.0 55.1 56.6 54.2 57.8 58.6 61.1 60.6 61.6 61.7 28 Schiller Park 69.8 70.2 68.5 68.9 67.8 66.2 66.1 67.9 68.0 66.9 29 Wood Dale 58.6 59.6 56.8 57.4 58.0 58.6 59.1 59.4 60.1 59.8 30 Wood Dale 45.0 45.7 51.1 46.0 46.2 43.8 46.3 47.0 46.0 46.6 31 Bensenville3 ------63.9 32 Wood Dale 54.8 55.3 54.2 55.0 58.0 58.9 58.2 59.5 58.1 57.4 33 Park Ridge 42.6 43.9 48.2 47.6 49.9 50.6 49.8 51.7 53.7 53.2 34 Elk Grove Village 48.5 49.1 51.2 50.6 50.9 50.4 52.6 50.7 50.1 50.1 35 Unincorporated Cook 43.7 44.5 50.9 49.4 47.7 48.8 47.8 47.7 47.5 47.6 37 Mount Prospect 44.1 47.0 49.8 47.8 46.4 37.2 39.0 37.1 36.7 40.4 42 Chicago4 ------46.6 48.1 50.9 48.2 44 Itasca5 ------58.4 57.7 1 Leq (Equivalent Sound Level): The average sound energy level during a stated period of time. 2 Site 18 was commissioned on January 12, 2018. 3 Site 31 was commissioned on August 3, 2018. 4 Site 42 was commissioned on June 27, 2015. 5 Site 44 was commissioned on January 12, 2018.

Chicago Department of Aviation Page 12 2019 Airline Ground Run-Up Report Chicago O'Hare International Airport Period: January 1, 2019 through December 31, 2019 Time of Day: 24 Hours

Run-ups Run-ups Run-ups Percentage Total in GRE Other Use of GRE

All Airlines 1,258 1,169 89 93%

273 246 27 90%

434 434 0 100%

151 102 49 68%

335 335 0 100%

Other 65 52 13 80%

2019

Location Total % of Total GRE 1,169 92.9% Other2 89 7.1% Total 1,258 100%

Chicago Department of Aviation Page 13 2019 Aircraft Ground Run-Up Report Chicago O'Hare International Airport Period: January 1, 2019 through December 31, 2019 Time of Day: 24 Hours

Run-ups Run-ups in Percentage Aircraft Total GRE Use of GRE

A319 19 17 89%

A320 35 32 91%

A321 6 6 100%

B717 3 3 100%

B737 289 279 97%

B747 4 0 0%

B757 37 13 35%

B767 10 2 20%

B777 13 1 8%

B787 24 2 8%

CRJ200/700/900 385 385 100%

DC10 3 1 33%

E145 278 278 100%

E170/175 136 136 100%

MD11 2 0 0%

MD80/90 7 7 100%

Other 7 7 100%

TOTAL 1,258 1,169 93%

Chicago Department of Aviation Page 14 2019

Chicago Department of Aviation O’Hare Noise Hotline: 1-800-435-9569 www.flychicago.com/oharenoise