1st Quarter 2020 Report

Fly Quiet Program O’Hare International Airport

Visit the O’Hare Noise Webpage on the Internet at www.flychicago.com/oharenoise 1st Quarter 2020 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 (ONCC), 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 Quarterly Fly Quiet Report. This report is shared with CDA staff, the ONCC, 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 1Q 2020 include:

Average Start Time: 10:47 p.m. Average Stop Time: 5:53 a.m. Average Nightly Time in FQM: 7:06 Average Nightly Operations in FQM: 93

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 quarter with the previous quarter as well as with the 12-month average. 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 quarter with the previous quarter as well as with the 12-month average. Percentage is a ratio whereas a percentage point is the difference between two percentages.

1 Airport Noise Compatibility Planning (14 CFR Part 150)

Chicago Department of Aviation Page 1 1st Quarter 2020 Highlights for 1Q 2020 include:

Departures Arrivals Most used nighttime departure runway: 28R – 50% Most used nighttime arrival runway: 27L – 28% 22L night departures increased by 5pp from 4Q 2019 27R night arrivals increased by 15pp from 4Q 2019 28C night departures decreased by 5pp from 4Q 2019 28C night arrivals decreased by 11pp from 4Q 2019 pp = Percentage Points

Nighttime operations represent 10% of the overall daily operations

Percent of Carrier Category Total United & American 49% Other Domestic 17% Other International 9% Dedicated Cargo 24% General Aviation 1% FQM Total 100%

ARRIVAL SUMMARY

A detailed airline summary is provided for the two most-used arrival runways (27L and 28C).

PREFERENTIAL FLIGHT TRACKS

As part of the Fly Quiet Program, the Chicago Department of Aviation worked with the ONCC, 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. A detailed airline deviation summary is provided for the two most-used departure runways (10L and 28R); the airline deviation is also compared to the data from the same quarter of the previous year.

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 1Q 2020 include:

Categories Percent Deviation

less than 0.5 miles 81% between 0.5 and 1.0 miles 14% greater than 1.0 miles 5%

Chicago Department of Aviation Page 2 1st Quarter 2020 NOISE COMPLAINTS

The CDA maintains a toll-free noise hotline (1-800-435-9569) and an online service at www.flychicago.com/oharenoise, and a free CHI 311 mobile app for citizens to express their concern about particular aircraft events or aircraft noise levels in general. In February 2015, a citizen group created a software script to register aircraft noise complaints via the City of Chicago’s 311 site. In January 2018 the City of Chicago implemented a captcha to improve the performance of its 311 system by reducing the number of non-human submissions. On December 19, 2018, the City of Chicago launched a new software platform for service requests of all types, including aircraft noise complaints. This new platform includes multiple methods to submit a complaint including telephone, Internet and the free CHI 311 mobile app.

The Nighttime Noise Complaint Report summarizes the number of complaints received from households with verifiable addresses and where the households were located. The tables illustrate the method of complaints, and nature of complaints during the specified quarter. These totals only include complaints made within the State of Illinois to the O’Hare Noise Hotline toll-free number, online service, or CHI 311 mobile app. Data for noise complaints made prior to December 18, 2018 is available on the CDA’s website at www.flychicago.com/oharenoise.

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 . 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 quarter by airline. The Aircraft Ground Run-up Report displays the total number of ground run ups from the current quarter by aircraft. Both reports compare the percent utilization of the GRE facility to the percent utilization of other locations for ground run-ups. It also compares the current quarter’s GRE usage to the 12-month average and to the same quarter of the previous year.

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.

The data in this report displays the average Leq for the current quarter and its comparison to the previous four quarters. It also compares the current quarter’s Leq to the 12-month average. Numbers displayed in red represent an increase of at least 1 dB over the aircraft Leq from the same quarter of the previous year whereas numbers displayed in green represent a decrease of at least 1 dB from the aircraft Leq from the same quarter of the previous year.

Chicago Department of Aviation Page 3 1st Quarter 2020 Nighttime Hourly Operations Report Chicago O'Hare International Airport Period: 1st Quarter 2020 Time of Day: 10:00 p.m. to 7:00 a.m.

Average Arrivals and Departures by Hour

25 FQM START FQM STOP 10:47 PM 5:53 AM 20

15 Average Fly Quiet Duration – 7:06, 93 Operations 10

5

0

5 Average Average Daily Operations 10

15

20 Nighttime Duration – 9:00, 232 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. 1Q20 Arrivals 1Q19 Arrivals Arrivals 12 Month Avg. 1Q20 Departures 1Q19 Departures Departures 12 Month Avg.

Chicago Department of Aviation Page 4 1st Quarter 2020 Runway Use Report Chicago O'Hare International Airport Period: 1st Quarter 2020 Time of Day: 10:00 p.m. to 7:00 a.m.

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 1Q 2020 1 0 0 10 10 1 0 15 0 0 0 0 4 47 4Q 2019 1 0 0 12 10 1 0 24 0 0 0 0 6 62 12 Month Avg. 1 0 0 23 22 2 0 23 0 0 0 0 5 61 Average Daily Arrivals 1Q 2020 0 2 5 1 5 24 0 0 10 36 9 0 41 6 4Q 2019 0 2 5 1 5 19 1 0 7 46 10 0 53 8 12 Month Avg. 0 1 9 2 7 41 1 0 5 45 10 0 51 8

Departures (10 p.m. to 7 a.m.) Arrivals (10 p.m. to 7 a.m.) 80% 80%

70% 70%

60% 60%

50% 50%

40% 40%

30% 30%

20% 20%

10% 10%

0% 0%

Percentage Departure Utilization Percentage Arrival Utilization 1Q 2020 1Q 2020 0 2 # 7

0 0 3 6

0 0

0 12 1 27

0 0 53 11 4 4

4 1 17 30 0 0 0 # 0 0

0 0 17 0 1

Chicago Department of Aviation Page 5 1st Quarter 2020 Runway Use Report Chicago O'Hare International Airport Period: 1st Quarter 2020 Time of Day: Fly Quiet Mode (FQM)

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 Average Daily Departures 1Q 2020 1 0 0 2 4 1 0 4 0 0 0 0 4 14 4Q 2019 1 0 0 1 3 1 0 5 0 0 0 0 5 16 12 Month Avg. 1 0 0 3 7 1 0 3 0 0 0 0 4 13 Average Daily Arrivals 1Q 2020 0 3 0 0 4 11 0 0 9 14 0 0 18 5 4Q 2019 0 2 0 0 4 6 0 0 6 14 0 0 24 7 12 Month Avg. 0 1 0 0 9 15 0 0 4 13 0 0 16 7

Departures (FQM) Arrivals (FQM) 80% 80%

70% 70%

60% 60%

50% 50%

40% 40%

30% 30%

20% 20%

10% 10%

0% 0%

Percentage Departure Utilization Percentage Arrival Utilization 1Q 2020 1Q 2020 0 4 # 14

0 0 0 0

0 0

1 8 0 21

0 0 46 14 7 8

12 3 18 27 0 0 0 # 0 0

0 0 12 0 5

Purple denotes Fly Quiet preferential departure and arrival runways.

Chicago Department of Aviation Page 6 1st Quarter 2020 Nighttime Arrival Summary Chicago O'Hare International Airport Period: 1st Quarter 2020 Time of Day: Fly Quiet Mode (FQM)

Runway 27L Arrivals 1st Quarter 2020 1st Quarter 2019 Airline Arrivals Arrivals Name Type1 AeroMexico P 18 43 Air Canada Express/Sky Regional P 3 4 P 1 -- P 40 33 P 201 271 American Eagle/Envoy P 58 90 C 2 3 China Southern Cargo C 1 -- Copa Airlines P 12 13 P 47 56 Emirates SkyCargo C 1 4 FedEx C 8 1 P 57 55 General Aviation -- 11 12 P 26 43 JetBlue Airways P 22 43 Korean Air Cargo C 1 -- Qatar Airways Cargo P 3 2 Republic Airlines P 8 8 Sky West Aviation P 119 106 P 112 132 Turkish Cargo C 1 -- P 388 390 / P 21 30 United Express/ExpressJet P 17 17 United Express/Gojet P 10 7 United Express/Trans States P 2 4 UPS C 4 1 VivaAerobus P 1 -- P 11 10 C 2 -- Total 1,208 1,378 Note 1: Passenger Carrier (P) or Dedicated Cargo (C)

Chicago Department of Aviation Page 7 1st Quarter 2020 Nighttime Arrival Summary Chicago O'Hare International Airport Period: 1st Quarter 2020 Time of Day: Fly Quiet Mode (FQM)

Runway 28C Arrivals 1st Quarter 2020 1st Quarter 2019 Airline Arrivals Arrivals Name Type1 Aerologic C 12 4 AeroMexico P 13 26 Air Canada Express/Sky Regional P 4 -- Air France Cargo C 1 -- Air India P 2 9 AirBridge Cargo Airlines C 8 3 Alaska Airlines P 20 16 American Airlines P 219 203 American Eagle/Envoy P 48 43 Asiana Cargo C 11 7 Atlas Air C 18 23 CargoLogicAir C 1 4 Cargolux Airlines C 17 12 Cargolux Italia C 1 -- Cathay Pacific Cargo C 3 3 China Airlines Cargo C 1 2 China Southern Cargo C 5 7 Copa Airlines P 16 21 Delta Air Lines P 53 31 / P 2 -- Emirates P 1 -- Emirates SkyCargo C 3 7 Ethiopian Airlines P 1 1 EVA Air Cargo C 2 3 FedEx C 110 110 Frontier Airlines P 60 35 General Aviation -- 6 12 Interjet P 38 31 JetBlue Airways P 19 30 C 6 -- Korean Air Cargo C 18 8 LATAM Cargo C 1 -- LOT P 3 1 Lufthansa P 2 -- Lufthansa Cargo C 5 5 Nippon Cargo Airlines C 9 3 C 4 1 Qantas Freight C 9 4 Qatar Airways Cargo C 22 22 P 4 4 Silk Way West Airlines C 4 -- C 2 2 Sky West Aviation P 121 50 C 1 -- Spirit Airlines P 91 76 TAP Air Portugal P 1 -- Turkish Cargo C 4 6 United Airlines P 384 281 United Express/Air Wisconsin P 7 23 United Express/ExpressJet P 13 7 United Express/Gojet P 8 11 United Express/Trans States P 3 -- UPS C 93 68 Volaris P 11 8 Western Global Airlines C 2 3 Total 1,523 1,226 Note 1: Passenger Carrier (P) or Dedicated Cargo (C)

Chicago Department of Aviation Page 8 1st Quarter 2020 Nighttime Preferential Flight Track Summary Chicago O'Hare International Airport Period: 1st Quarter 2020 Time of Day: Fly Quiet Mode (FQM)

Runway 10L Departures 1st Quarter 2020 1st Quarter 2019

Airline Average Average Departures Deviation Departures Deviation 1 Name Type (nautical miles) (nautical miles) ABX Air C 5 0.31 -- -- Aerologic C 3 0.04 8 0.23 AeroMexico P 4 0.33 31 0.17 Air France P 1 0.37 -- -- Air France Cargo C 7 0.21 3 0.10 AirBridge Cargo Airlines C 2 0.26 9 0.32 American Airlines P 26 0.38 56 0.28 American Eagle/Envoy P 2 0.21 6 0.22 Asiana Cargo C 8 0.74 12 0.26 Atlas Air C 23 0.20 13 0.15 Cargolux Airlines C 14 0.37 11 0.27 Cargolux Italia C 2 0.15 -- -- Cathay Pacific Cargo C 5 0.46 11 0.45 China Airlines Cargo C 5 0.23 1 0.22 China Southern Cargo C 2 0.02 1 0.05 Delta Air Lines P 6 0.19 7 0.18 Delta Connection/Endeavor Air P 1 0.02 -- -- Emirates P 1 0.11 -- -- Emirates SkyCargo C 2 0.29 4 0.26 EVA Air P 11 0.20 17 0.19 FedEx C 52 0.25 41 0.21 Frontier Airlines P 2 0.25 9 0.31 General Aviation -- 5 0.15 6 0.08 Hainan Airlines P 3 0.13 -- -- Interjet P 15 0.36 31 0.31 Jetblue Airways P 1 0.10 3 0.21 Kalitta Air C 6 0.23 4 0.25 Korean Air Cargo C 12 0.28 17 0.10 LOT P 12 0.22 11 0.20 Lufthansa P 4 0.60 2 0.15 Lufthansa Cargo C 8 0.32 6 0.29 Nippon Cargo Airlines C 3 0.56 9 0.16 Polar Air Cargo C 1 0.08 1 0.58 Qantas Freight C 2 0.32 5 0.24 Qatar Airways Cargo C 11 0.19 13 0.12 Republic Airlines P 1 0.13 1 0.40 Scandinavian Airlines P 5 0.22 7 0.23 Silk Way West Airlines C 3 0.21 5 0.75 Sky Lease Cargo C 3 0.21 3 0.11 Sky West Aviation P 4 0.44 7 0.25 Spirit Airlines P 12 0.24 5 0.30 Turkish Airlines P 1 0.08 5 0.21 Turkish Cargo C 6 0.90 7 0.29 United Airlines P 13 0.23 15 0.20 United Express/Trans States P 2 0.39 5 0.20 UPS C 19 0.25 10 0.27 VivaAerobus P 1 0.89 -- -- Volaris P 3 1.37 3 0.19 Western Global Airlines C 2 0.17 4 0.28 Overall 342 0.30 425 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 9 1st Quarter 2020 Nighttime Preferential Flight Track Summary Chicago O'Hare International Airport Period: 1st Quarter 2020 Time of Day: Fly Quiet Mode (FQM)

Runway 28R Departures 1st Quarter 2020 1st Quarter 2019

Airline Average Average Departures Deviation Departures Deviation 1 Name Type (nautical miles) (nautical miles) ABX Air C 5 0.35 -- -- Aer Lingus P 1 0.21 -- -- Aerologic C 11 0.49 11 0.51 AeroMexico P 21 0.40 57 0.34 AeroUnion C 1 0.18 -- -- Air Canada Express/Sky Regional P 3 0.48 1 0.04 Air China Cargo C 3 0.64 -- -- Air Choice One P 1 0.55 -- -- Air France Cargo C 20 0.35 8 0.18 AirBridge Cargo Airlines C 13 0.57 13 0.45 Alaska Airlines P 2 0.26 1 0.35 All Nippon Airways P 1 0.68 1 0.32 American Airlines P 124 0.47 216 0.32 American Eagle/Envoy P 76 0.20 86 0.20 Asiana Cargo C 17 0.28 24 0.26 Atlas Air C 51 0.35 57 0.23 Cargolux Airlines C 28 0.36 28 0.51 Cathay Pacific Cargo C 13 0.48 17 0.58 China Airlines Cargo C 6 0.32 14 0.32 C 1 0.22 5 0.60 China Eastern Airlines P 1 0.39 -- -- China Southern Cargo C 2 0.52 4 0.44 Delta Air Lines P 23 0.32 24 0.21 Delta Connection/Endeavor Air P 1 0.12 1 0.02 Emirates SkyCargo C 11 0.38 20 0.35 EVA Air P 37 0.52 35 0.52 EVA Air Cargo C 2 0.36 5 0.41 FedEx C 75 0.34 121 0.23 Frontier Airlines P 32 0.27 20 0.24 General Aviation -- 6 0.52 10 0.59 Hainan Airlines P 4 0.53 -- -- Icelandair P 1 0.66 -- -- Interjet P 48 0.37 51 0.31 JetBlue Airways P 9 0.25 18 0.22 Kalitta Air C 8 0.73 10 0.41 Korean Air Cargo C 29 0.37 33 0.32 LOT P 20 0.43 20 0.54 Lufthansa P 16 0.57 8 0.41 Lufthansa Cargo C 23 0.62 13 0.40 Nippon Cargo Airlines C 14 0.45 19 0.39 Polar Air Cargo C 1 0.10 1 0.39 Qantas Freight C 8 0.79 16 0.40 Qatar Airways Cargo P 26 0.45 32 0.41 Republic Airlines P 3 0.24 5 0.14 Scandinavian Airlines P 11 0.35 14 0.36 Silk Way West Airlines C 8 0.72 3 0.96 Sky Lease Cargo C 3 0.11 2 0.06 Sky West Aviation P 93 0.23 77 0.28 Southern Air C 3 0.58 -- -- Spirit Airlines P 36 0.37 37 0.26 Turkish Airlines P 8 0.66 6 0.51 Turkish Cargo C 8 0.62 9 0.64 United Airlines P 84 0.35 91 0.22 United Express/Air Wisconsin P 24 0.21 47 0.20 United Express/ExpressJet P 2 0.07 21 0.37 United Express/Gojet P 17 0.22 4 0.38 United Express/Trans States P 7 0.33 11 0.18 UPS C 39 0.31 25 0.19 VivaAerobus P 2 0.34 -- -- Volaris P 22 0.44 15 0.32 Western Global Airlines C 7 0.49 11 0.39 Overall 1,172 0.38 1,378 0.31 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 10 1st Quarter 2020 Nighttime Departure Track Report Chicago O'Hare International Airport Period: 1st Quarter 2020 Time of Day: 10:00 p.m. to 7:00 a.m.

2,521 FQM Departures 5,477 Non-FQM2 Departures 7,614 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 94% n/a n/a 95% 90% n/a 33% n/a 100% n/a n/a 88% (1,734) 0.5 < 1.0 3% n/a n/a 2% n/a1 4% n/a 58% n/a 0% n/a n/a1 n/a 9% (306) >1.0 3% n/a n/a 3% 6% n/a 9% n/a 0% n/a n/a 3% (97)

n/a = not applicable Note 1: Runways 10C 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 11 1st Quarter 2020 Nighttime Noise Complaint Report Chicago O'Hare International Airport Period: 1st Quarter 2020 Time of Day: 10:00 p.m. to 7:00 a.m.

Total Complaints Total Complaints Total Complaints Households Households Households for the Quarter for the Quarter for the Quarter Community1 Community1 Community1 Jan Feb Mar 1Q Jan Feb Mar 1Q Jan Feb Mar 1Q 20 20 20 20 20 20 20 20 20 20 20 20

Addison -- -- 1 2 Glenview 9 10 13 145 Skokie 1 1 1 91 Algonquin ------Gurnee 2 -- -- 3 Sleepy Hollow ------Arlington Heights 4 4 5 136 Hampshire 1 1 1 71 South Elgin -- 1 2 17 Barrington Hills -- -- 1 2 Hanover Park 3 2 2 96 South Holland -- 1 -- 1 Bartlett 4 4 4 667 Harwood Heights 1 4 2 8 St. Charles 1 1 1 8 Batavia ------Hillside 1 1 1 15 Unincorporated Cook ------Bensenville -- 2 1 7 Hoffman Estates 1 2 1 38 Villa Park ------Berkeley -- -- 1 4 Itasca 5 4 3 1,851 Wayne ------Berwyn ------La Grange -- 1 -- 1 West Chicago ------Bloomingdale 2 2 3 37 Lincolnwood 1 1 1 20 West Dundee ------Buffalo Grove ------Lombard 2 3 4 106 Western Springs 1 1 1 32 Burlington ------Long Grove ------Westmont ------Carol Stream -- 1 -- 1 Medinah 1 1 1 13 Wheaton ------Carpentersville 1 1 1 24 Melrose Park ------Wilmette 1 1 1 13 Chicago 67 54 67 6,822 Montgomery ------Winfield 1 1 1 118 Ward 38 6 4 8 353 Morton Grove ------Winnetka ------Ward 39 12 9 10 1,703 Mount Prospect ------Wood Dale 9 8 5 876 Ward 40 7 3 5 180 Mundelein ------Ward 41 24 26 21 1,015 Niles 2 1 2 671 Total 211 184 207 16,107 Ward 45 6 5 13 853 Norridge 3 3 7 208 Ward Other 12 7 10 2,718 Northbrook ------Deerfield ------Northfield 1 -- -- 1 METHOD OF COMPLAINT Des Plaines 8 5 5 107 Northlake -- 1 -- 1 Total % of Total Downers Grove ------Oak Park ------Website 15,657 97.2% Elburn ------Palatine 1 1 1 82 App 352 2.2% Elgin 1 2 2 52 Park Ridge 37 28 32 1,941 Telephone 98 0.6% Elk Grove Village 8 8 6 463 Prospect Heights ------Total 16,107 100% Elmhurst 25 15 20 836 River Forest ------NATURE OF COMPLAINT Elmwood Park ------River Grove ------Evanston 1 1 1 178 Riverside ------Total % of Total Frankfort ------Rolling Meadows ------Aircraft Noise 11,906 73.9% Franklin Park -- 1 1 16 Roselle 1 1 1 95 Low Flying 925 5.7% Vibration 453 2.8% Geneva 1 1 -- 2 Rosemont ------Frequency 2,779 17.3% Gilberts 1 1 1 119 Schaumburg ------Other 44 0.3% Glencoe -- -- 1 1 Schiller Park 2 2 2 109 Total 16,107 100% Note 1: Complaints made within the State of Illinois from households with verifiable addresses.

Chicago Department of Aviation Page 12 1st Quarter 2020 Chicago Department of Aviation Page 13 1st Quarter 2020 Nighttime Aircraft Noise Report Chicago O'Hare International Airport Period: 1st Quarter 2020 Time of Day: 10:00 p.m. to 7:00 a.m. Metric: Aircraft Leq

1 Site Last 4 Quarters Monitored Noise Levels Community 1Q 2019 12 Month Avg. # 2Q 2019 3Q 2019 4Q 2019 1Q 2020

1 Arlington Heights -- 43.4 44.5 43.8 44.6 42.6 2 Melrose Park 44.7 43.7 40.7 42.0 41.2 43.0 3 Bensenville 55.8 55.3 56.8 55.5 55.8 55.9 4 Schiller Park 48.4 47.2 46.8 45.8 46.3 47.2 5 Chicago 51.6 50.3 49.9 48.1 50.1 50.1 7 Des Plaines 43.7 43.0 42.3 42.1 42.1 42.8 8 Des Plaines 47.9 45.6 49.3 49.1 47.6 48.2 10 Rolling Meadows 40.5 41.3 40.8 38.9 38.2 40.5 11 Chicago 47.4 47.0 44.9 45.6 46.1 46.3 12 Elk Grove Village 51.0 50.1 50.1 48.0 49.2 49.9 13 Elk Grove Village 55.5 55.1 53.1 52.4 52.8 54.2 14 Elk Grove Village 45.8 44.7 47.1 47.4 49.7 46.4 15 Franklin Park 42.0 41.2 40.1 40.7 40.3 41.0 16 Franklin Park 54.8 55.6 57.5 55.5 56.0 56.0 17 Harwood Heights 56.2 56.0 54.9 53.8 55.2 55.4 18 Norridge 53.7 52.8 51.2 50.5 51.4 52.2 19 Stone Park 45.0 43.3 46.7 44.4 45.2 45.0 20 Mount Prospect 46.2 46.0 46.8 44.1 44.5 45.9 21 Mount Prospect 44.5 42.6 42.4 40.2 42.6 42.7 22 Norridge 59.6 59.2 57.9 56.5 57.9 58.4 23 Northlake 54.7 54.1 55.8 53.0 55.2 54.5 24 Park Ridge ------45.5 47.0 39.5 25 Park Ridge 56.6 56.2 53.2 52.2 54.0 55.0 26 Park Ridge 51.2 49.1 48.2 47.4 48.4 49.2 27 Rosemont 63.2 62.0 60.1 59.0 60.9 61.4 28 Schiller Park 67.4 67.6 65.9 64.8 66.5 66.6 29 Wood Dale 61.1 60.7 58.2 57.7 58.7 59.7 30 Wood Dale 47.0 46.5 47.6 46.3 44.9 46.9 31 Bensenville 65.2 64.6 62.7 61.8 62.5 63.8 32 Wood Dale 57.7 57.3 58.1 55.7 56.6 57.3 33 Park Ridge 54.6 53.0 48.0 49.2 54.6 52.0 34 Elk Grove Village 50.9 46.0 52.0 49.2 49.7 50.0 35 Unincorporated Cook 47.5 46.3 48.9 47.1 47.3 47.6 37 Mount Prospect 42.3 37.3 38.4 37.0 41.6 39.3 42 Chicago 49.3 48.3 47.3 46.6 47.5 48.0 44 Itasca 59.3 58.2 55.7 55.3 56.7 57.4 Note 1: Leq (Equivalent Sound Level): The average sound energy level during a stated period of time. Red represents an increase of 1 dB or more from same quarter of the previous year (2 monitors). Green represents a decrease of 1 dB or more from same quarter of the previous year (14 monitors).

Chicago Department of Aviation Page 14 1st Quarter 2020 Airline Ground Run-Up Report Chicago O'Hare International Airport Period: 1st Quarter 2020 Time of Day: 24 Hours

All Airlines 1st Quarter 2020 4th Quarter 2019 12 Month Avg. 1 Location Run-ups Percentage Run-ups Percentage Run-ups Percentage GRE 221 92% 248 93% 294 93% Other2 19 8% 20 7% 23 7% Total 240 100% 268 100% 317 100% GRE 60 87% 63 93% 71 91% Other2 9 13% 5 7% 7 9% Total 69 100% 68 100% 78 100% GRE 79 100% 82 100% 104 100% Other2 0 0% 0 0% 0 0% Total 79 100% 82 100% 104 100% GRE 60 100% 80 100% 82 100% Other2 0 0% 0 0% 0 0% Total 60 100% 80 100% 82 100% GRE 20 67% 21 62% 27 68% Other2 10 33% 13 38% 13 32% Total 30 100% 34 100% 40 100% GRE 2 100% 2 50% 10 77% Other Other2 0 0% 2 50% 3 23% Total 2 100% 4 100% 13 100%

1st QUARTER 2020

Location Total % of Total GRE 221 92.1% Other2 19 7.9% Total 240 100%

Note 1: 12 Month Average equals the average of: 2Q 2019, 3Q 2019, 4Q 2019, and 1Q 2020. Note 2: Alternate locations were coordinated with FAA Air Traffic on an as needed basis.

Chicago Department of Aviation Page 15 1st Quarter 2020 Aircraft Ground Run-Up Report Chicago O'Hare International Airport Period: 1st Quarter 2020 Time of Day: 24 Hours

1st Quarter 2020 4th Quarter 2019

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

A319 5 4 80% 8 7 88%

A320 10 8 80% 9 8 89%

A321 2 1 50% 1 1 100%

B737 69 65 94% 68 66 97%

B747 0 0 -- 2 0 0%

B757 5 2 40% 10 1 10%

B767 0 0 -- 2 1 50%

B777 3 1 33% 1 0 0%

B787 6 0 0% 4 1 25%

CRJ200/700/900 57 57 100% 83 83 100%

E140/145 65 65 100% 68 68 100%

E170/175 18 18 100% 12 12 100%

TOTAL 240 221 92% 268 248 93%

Chicago Department of Aviation Page 16 1st Quarter 2020

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