2nd Quarter 2019 Report

Fly Quiet Program O’Hare International Airport

Visit the O’Hare Noise Webpage on the Internet at www.flychicago.com/oharenoise 2nd Quarter 2019 Report

BACKGROUND

On June 17, 1997, the City of Chicago announced that 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 2Q 2019 include:

Average Start Time: 11:12 p.m. Average Stop Time: 5:43 a.m. Average Nightly Time in FQM: 6:31 Average Nightly Operations in FQM: 96

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 2nd Quarter 2019 Highlights for 2Q 2019 include:

Departures Arrivals Most used nighttime departure runway: 28R – 35% Most used nighttime arrival runway: 10C – 34% 10L night departures increased by 11pp from 1Q 2019 10C night arrivals increased by 13pp from 1Q 2019 28R night departures decreased by 14pp from 1Q 2019 27L night arrivals decreased by 8pp from 1Q 2019 pp = Percentage Points

Nighttime operations represent 12% of the overall daily operations

Percent of Carrier Category Total United & American 52% Other Domestic 14% Other International 18% Dedicated Cargo 15% General Aviation 1% FQM Total 100%

ARRIVAL SUMMARY

A detailed summary is provided for the two most-used arrival runways (10C 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 2Q 2019 include:

Categories Percent Deviation

less than 0.5 miles 89% between 0.5 and 1.0 miles 9% greater than 1.0 miles 2%

Chicago Department of Aviation Page 2 2nd Quarter 2019 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 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 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 2nd Quarter 2019 Nighttime Hourly Operations Report Chicago O'Hare International Airport Period: 2nd Quarter 2019 Time of Day: 10:00 p.m. to 7:00 a.m.

Average Arrivals and Departures by Hour

25 FQM START FQM STOP 11:12 PM 5:43 AM 20

15 Average Fly Quiet Duration – 6:31, 96 Operations 10

5

0

5 Average Average Daily Operations 10

15

20 Nighttime Duration – 9:00, 310 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. 2Q19 Arrivals 2Q18 Arrivals Arrivals 12 Month Avg. 2Q19 Departures 2Q18 Departures Departures 12 Month Avg.

Chicago Department of Aviation Page 4 2nd Quarter 2019 Runway Use Report Chicago O'Hare International Airport Period: 2nd Quarter 2019 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 2Q 2019 0 0 0 33 32 3 0 21 0 0 0 0 3 49 1Q 2019 1 0 0 19 13 1 0 18 0 0 0 0 4 53 12 Month Avg. 2 0 0 25 21 2 0 20 0 0 0 0 4 50 Average Daily Arrivals 2Q 2019 0 0 13 2 8 57 1 0 0 36 8 0 37 6 1Q 2019 0 0 7 1 10 31 1 0 0 43 8 0 37 9 12 Month Avg. 0 0 10 2 11 39 2 0 0 44 11 0 35 9

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 2Q 2019 2Q 2019 0 0 # 0

0 0 8 5

0 0

0 23 1 21

0 0 35 23 5 3

2 2 34 22 0 0 0 # 1 0

0 0 15 0 0

Chicago Department of Aviation Page 5 2nd Quarter 2019 Runway Use Report Chicago O'Hare International Airport Period: 2nd Quarter 2019 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 2Q 2019 0 0 0 4 10 3 0 2 0 0 0 0 3 10 1Q 2019 0 0 0 4 6 1 0 4 0 0 0 0 4 17 12 Month Avg. 1 0 0 3 8 2 0 3 0 0 0 0 4 13 Average Daily Arrivals 2Q 2019 0 0 0 0 8 26 0 0 0 9 0 0 15 5 1Q 2019 0 0 0 0 8 12 0 0 0 16 0 0 14 8 12 Month Avg. 0 0 0 0 10 15 0 0 0 15 0 0 12 8

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 2Q 2019 2Q 2019 0 0 # 0

0 0 0 0

0 0

0 12 0 15

0 0 32 32 13 8

9 8 41 23 0 0 0 # 0 0

0 0 7 0 0

Purple denotes Fly Quiet preferential departure and arrival runways.

Chicago Department of Aviation Page 6 2nd Quarter 2019 Nighttime Arrival Summary Chicago O'Hare International Airport Period: 2nd Quarter 2019 Time of Day: Fly Quiet Mode (FQM)

Runway 10C Arrivals 2nd Quarter 2019 2nd Quarter 2018 Airline Arrivals Arrivals Name Type1 Aerologic C 6 8 AeroMexico P 62 67 P 2 1 Air Canada Express/Jazz P 1 1 Air Canada Express/Sky Regional P 4 3 Air Cargo C 1 -- AirBridge Cargo Airlines C 3 6 P 56 68 P 396 434 American Eagle/Envoy P 71 40 American Eagle/PSA Airlines P 4 4 P 18 25 C 21 17 P 10 -- CargoLogicAir C 7 1 Airlines C 21 20 Airways P 7 9 C 2 5 C 3 1 C 8 7 P 35 32 P 74 70 P 3 13 EVA Air P 1 5 FedEx C 105 97 P 60 54 General Aviation -- 6 20 P 66 57 JetBlue Airways P 51 35 C 4 14 Lines P 29 29 LOT P 1 1 Cargo C 1 8 National Air Cargo C 1 1 C 2 1 Airways C 4 3 Company P 19 20 P 8 40 Silk Way West Airlines C 1 2 Sky Lease Cargo C 1 -- Sky West Aviation P 153 146 P 186 220 C 2 3 P 4 5 P 755 651 / P 16 39 United Express/ExpressJet P 4 3 United Express/Gojet P 10 8 United Express/Trans States P 6 19 UPS C 50 48 P 18 12 Total 2,379 2,373 Note 1: Passenger Carrier (P) or Dedicated Cargo (C)

Chicago Department of Aviation Page 7 2nd Quarter 2019 Nighttime Arrival Summary Chicago O'Hare International Airport Period: 2nd Quarter 2019 Time of Day: Fly Quiet Mode (FQM)

Runway 28C Arrivals 2nd Quarter 2019 2nd Quarter 2018 Airline Arrivals Arrivals Name Type1 Aerologic C 1 4 AeroMexico P 31 24 Air Canada P 1 1 Air Canada Express/Sky Regional P 1 -- P 1 -- AirBridge Cargo Airlines C 2 3 Alaska Airlines P 20 26 American Airlines P 206 147 American Eagle/Envoy P 30 10 American Eagle/PSA Airlines P 3 1 Asiana Airlines P 9 12 Atlas Air C 19 3 Avianca P 6 -- CargoLogicAir C 4 1 Cargolux Airlines C 4 6 Cathay Pacific Airways P 2 3 China Airlines C 2 1 China Cargo Airlines C 2 1 China Southern Airlines C 10 7 Copa Airlines P 17 12 Delta Air Lines P 34 20 Emirates P 2 8 EVA Air P 1 1 FedEx C 97 78 Frontier Airlines P 31 25 General Aviation -- 7 5 Interjet P 35 15 JetBlue Airways P 22 12 Kalitta Air C 6 8 Korean Air Lines P 19 12 C 2 4 C 1 2 Norwegian Air UK P 1 -- Polar Air Cargo C 1 1 Qantas Airways C 5 3 Qatar Airways Company P 8 14 Republic Airlines P 4 18 Silk Way West Airlines C 2 2 Sky Lease Cargo C 1 -- Sky West Aviation P 73 48 Spirit Airlines P 81 58 Turkish Airlines P 1 -- United Airlines P 458 286 United Express/Air Wisconsin P 12 14 United Express/ExpressJet P 1 1 United Express/Gojet P 3 4 United Express/Trans States P 1 8 UPS C 48 42 Volaris P 7 4 C 1 11 Total 1,336 966 Note 1: Passenger Carrier (P) or Dedicated Cargo (C)

Chicago Department of Aviation Page 8 2nd Quarter 2019 Nighttime Preferential Flight Track Summary Chicago O'Hare International Airport Period: 2nd Quarter 2019 Time of Day: Fly Quiet Mode (FQM)

Runway 10L Departures 2nd Quarter 2019 2nd Quarter 2018

Airline Average Average Departures Deviation Departures Deviation 1 Name Type (nautical miles) (nautical miles) Aerologic C 9 0.16 12 0.20 AeroMexico P 40 0.21 52 0.24 Cargo C 1 1.01 -- -- Air France P 20 0.12 6 0.12 P 1 0.17 1 0.29 AirBridge Cargo Airlines C 15 0.24 19 0.30 Alaska Airlines P 6 0.18 7 0.13 American Airlines P 174 0.28 124 0.24 American Eagle/Envoy P 22 0.20 17 0.20 American Eagle/PSA Airlines P 1 0.29 3 0.27 Asiana Airlines P 37 0.17 57 0.26 Atlas Air C 56 0.18 23 0.15 Avianca P 6 0.47 -- -- P 2 0.32 -- -- CargoLogicAir C 4 0.10 -- -- Cargolux Airlines C 14 0.21 23 0.23 Cathay Pacific Airways P 6 0.29 22 0.41 China Airlines C 3 0.62 5 0.18 China Cargo Airlines C 4 0.17 6 0.22 China Southern Airlines C 3 0.09 2 0.11 Delta Air Lines P 11 0.22 -- -- / P 1 0.15 -- -- Emirates P 9 0.19 7 0.16 P 2 0.16 -- -- Eva Airways P 26 0.11 37 0.14 FedEx C 82 0.18 84 0.19 P 1 0.38 -- -- Frontier Airlines P 12 0.20 12 0.19 General Aviation -- 6 0.24 8 0.14 P 7 0.15 -- -- Interjet P 42 0.31 44 0.21 Jetblue Airways P 5 0.12 6 0.14 Kalitta Air C 12 0.19 26 0.24 Korean Air Lines P 17 0.21 14 0.15 LOT P 4 0.18 17 0.15 Lufthansa P 35 0.16 32 0.13 Lufthansa Cargo C 6 0.21 9 0.12 National Air Cargo C 1 0.13 3 0.26 Nippon Cargo Airlines C 2 0.47 24 0.25 Norwegian Air UK P 1 0.26 4 0.13 Qantas Airways C 8 0.22 9 0.16 Qatar Airways P 20 0.15 15 0.16 Republic Airlines P 6 0.25 8 0.14 P 2 0.09 7 0.20 Silk Way West Airlines C 3 0.38 4 0.42 Sky Lease Cargo C 1 0.43 -- -- Sky West Aviation P 35 0.24 29 0.15 Spirit Airlines P 31 0.18 32 0.16 Suparna Airlines C 3 0.31 1 0.04 Turkish Airlines P 14 0.22 9 0.42 United Airlines P 53 0.17 60 0.24 United Express/Air Wisconsin P 10 0.27 17 0.23 United Express/ExpressJet P 3 0.28 2 0.29 United Express/Gojet P 6 0.19 4 0.20 United Express/Trans States P 3 0.05 2 0.17 UPS C 25 0.19 36 0.18 Volaris P 9 0.27 6 0.61 Western Global Airlines C 6 0.26 4 0.20 Overall 944 0.22 951 0.22 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 2nd Quarter 2019 Nighttime Preferential Flight Track Summary Chicago O'Hare International Airport Period: 2nd Quarter 2019 Time of Day: Fly Quiet Mode (FQM)

Runway 28R Departures 2nd Quarter 2019 2nd Quarter 2018

Airline Average Average Departures Deviation Departures Deviation 1 Name Type (nautical miles) (nautical miles) P 1 0.61 1 0.27 Aerologic C 11 0.51 13 0.74 AeroMexico P 45 0.36 51 0.35 AeroUnion C 1 0.41 -- -- Air Canada Express/Sky Regional C 1 0.95 -- -- Air France P 6 0.32 3 0.33 AirBridge Cargo Airlines C 8 0.55 19 0.58 Alaska Airlines P 5 0.31 8 0.32 American Airlines P 173 0.39 151 0.31 American Eagle/Envoy P 26 0.23 33 0.18 American Eagle/PSA Airlines P 1 0.10 4 0.38 Asiana Airlines P 40 0.38 42 0.38 Atlas Air C 50 0.26 24 0.32 Avianca P 9 0.20 -- -- CargoLogicAir C 9 0.33 -- -- Cargolux Airlines C 14 0.45 20 0.45 Cathay Pacific Airways P 8 0.47 16 0.40 China Airlines C 6 0.19 3 0.22 China Cargo Airlines C 9 0.37 9 0.34 China Southern Airlines C 1 0.14 1 0.40 Copa Airlines P 1 0.42 2 0.19 Delta Air Lines P 21 0.22 7 0.24 Delta Connection/Endeavor Air P 1 0.04 2 0.20 Emirates P 11 0.41 15 0.52 Etihad Airways P 1 0.68 -- -- Eva Airways P 29 0.57 27 0.58 FedEx C 49 0.39 64 0.30 Frontier Airlines P 18 0.29 10 0.31 General Aviation -- 7 0.59 7 0.34 Icelandair P 3 0.35 -- -- Interjet P 42 0.24 49 0.34 JetBlue Airways P 8 0.41 6 0.34 Kalitta Air C 9 0.33 17 0.25 Korean Air Lines P 11 0.34 17 0.30 LOT P 2 0.66 12 0.59 Lufthansa P 19 0.73 21 0.58 Lufthansa Cargo C 7 0.28 10 0.45 Nippon Cargo Airlines C 4 0.54 26 0.43 Norwegian Air UK P 3 0.58 1 0.62 Qantas Airways C 6 0.35 11 0.42 Qatar Airways P 22 0.52 21 0.45 Republic Airlines P 1 0.18 9 0.29 P 1 0.24 -- -- Silk Way West Airlines C 4 0.51 4 0.58 Sky Lease Cargo C 3 0.14 -- -- Sky West Aviation P 44 0.30 37 0.26 Spirit Airlines P 39 0.37 59 0.32 Suparna Airlines C 4 0.33 4 0.18 Turkish Airlines P 17 0.52 9 0.63 United Airlines P 60 0.32 119 0.28 United Express/Air Wisconsin P 16 0.32 26 0.28 United Express/ExpressJet P 6 0.26 3 0.39 United Express/Gojet P 4 0.27 7 0.15 United Express/Trans States P 12 0.24 7 0.26 UPS C 15 0.41 25 0.20 Volaris P 10 0.38 9 0.33 Western Global Airlines C 6 0.32 11 0.35 Overall 940 0.37 1,052 0.35 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 2nd Quarter 2019 Nighttime Departure Track Report Chicago O'Hare International Airport Period: 2nd Quarter 2019 Time of Day: 10:00 p.m. to 7:00 a.m.

3,001 FQM Departures 9,725 Non-FQM2 Departures 12,726 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 n/a 100% n/a 95% 94% n/a 53% n/a 84% n/a n/a 88% (2,206) 0.5 < 1.0 n/a 0% n/a 3% n/a1 4% n/a 44% n/a 8% n/a n/a1 n/a 10% (236) >1.0 n/a 0% n/a 2% 2% n/a 3% n/a 8% n/a n/a 2% (51)

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 2nd Quarter 2019 Nighttime Noise Complaint Report Chicago O'Hare International Airport Period: 2nd Quarter 2019 Time of Day: 10:00 p.m. to 7:00 a.m.

Households Total Complaints Households Total Complaints Households Total Complaints 1 for the Quarter 1 for the Quarter 1 for the Quarter Community Apr May Jun 2Q Community Apr May Jun 2Q Community Apr May Jun 2Q 19 19 19 19 19 19 19 19 19 19 19 19

Addison ------Glenview 2 3 6 37 Sleepy Hollow ------Arlington Heights 4 5 6 79 Hampshire 1 1 1 43 South Barrington ------Aurora ------Hanover Park 1 2 2 151 South Elgin 1 1 1 57 Barrington ------Harwood Heights 2 6 3 24 St. Charles 2 1 2 49 Bartlett -- 3 3 100 Hillside 1 1 1 13 Unincorporated Cook -- 1 1 2 Batavia 2 ------Hoffman Estates 1 1 1 8 Villa Park ------Bensenville 3 3 1 11 Itasca 3 7 8 113 Wayne 1 1 1 6 Berkeley ------La Grange Park ------West Chicago 1 1 -- 2 Berwyn ------Lincolnwood 2 2 1 104 West Dundee 1 -- -- 1 Bloomingdale 6 2 4 110 Lombard ------Western Springs 1 1 1 133 Buffalo Grove ------Long Grove ------Westmont ------Burlington ------Medinah -- 3 4 20 Wheaton ------Carol Stream ------Melrose Park -- 1 -- 1 Wilmette -- 1 1 22 Carpentersville -- -- 1 2 Montgomery ------Winfield 1 1 1 60 Chicago 57 82 112 5,368 Morton Grove -- -- 1 1 Winnetka -- 1 -- 1 Ward 38 10 8 11 1,076 Mount Prospect -- 3 2 6 Wood Dale 9 16 21 474 Ward 39 9 17 23 1,471 Mundelein -- -- 1 2 Ward 40 2 1 5 66 Niles 5 2 2 107 Total 139 168 247 10,724 Ward 41 19 33 42 1,142 Norridge 14 10 29 188 Ward 45 9 15 12 913 Northbrook 1 3 2 59 Ward Other 8 8 19 700 Northfield ------METHOD OF COMPLAINT Deerfield -- -- 1 1 Northlake 1 -- 1 2 Total % of Total Des Plaines 4 4 8 79 Oak Park -- -- 1 3 Website 9,470 88.3% Downers Grove ------Palatine 1 2 2 229 App 1,001 9.3% Elburn ------Park Ridge 31 40 60 1,871 Telephone 253 2.4% Elgin 1 2 4 105 Prospect Heights ------Total 10,724 100% Elk Grove Village 8 7 15 166 River Forest ------NATURE OF COMPLAINT Elmhurst 8 9 6 101 River Grove ------Elmwood Park ------Riverside ------Total % of Total Evanston 2 2 1 366 Rolling Meadows ------Aircraft Noise 9,105 84.9% Frankfort ------Roselle 1 2 4 16 Low Flying 813 7.6% Franklin Park ------Rosemont -- 1 -- 7 Vibration 135 1.2% Geneva ------Schaumburg -- 1 4 7 Frequency 665 6.2% Gilberts 1 1 1 149 Schiller Park 6 4 9 116 Other 6 0.1% Glen Ellyn ------Skokie 2 2 3 152 Total 10,724 100%

Note 1: Complaints made within the State of Illinois from households with verifiable addresses.

Chicago Department of Aviation Page 12 2nd Quarter 2019 Chicago Department of Aviation Page 13 2nd Quarter 2019 Nighttime Aircraft Noise Report Chicago O'Hare International Airport Period: 2nd Quarter 2019 Time of Day: 10:00 p.m. to 7:00 a.m. Metric: Aircraft Leq

1 RMT Last 4 Quarters Monitored Noise Levels Community 2Q 2018 12 Month Avg. # 3Q 2018 4Q 2018 1Q 2019 2Q 2019

1 Arlington Heights 43.9 48.2 44.6 -- 48.0 45.9 2 Melrose Park 53.7 51.0 41.2 44.7 52.9 50.0 3 Bensenville 49.3 57.4 55.8 55.8 55.1 55.4 4 Schiller Park 48.2 47.5 46.3 48.4 48.9 47.7 5 Chicago 52.1 51.1 50.1 51.6 52.6 51.3 7 Des Plaines 44.6 41.9 42.1 43.7 43.4 43.2 8 Des Plaines 53.5 49.5 47.6 47.9 50.7 50.3 10 Rolling Meadows 41.4 41.4 38.2 40.5 43.0 40.6 11 Chicago 47.0 45.4 46.1 47.4 47.2 46.6 12 Elk Grove Village 50.8 50.9 49.2 51.0 52.0 50.5 13 Elk Grove Village 55.9 53.1 52.8 55.5 56.2 54.6 14 Elk Grove Village 46.0 47.4 49.7 45.8 45.8 47.5 15 Franklin Park 42.9 41.8 40.3 42.0 43.4 41.8 16 Franklin Park 56.0 57.7 56.0 54.8 55.0 56.3 17 Harwood Heights 57.0 56.4 55.2 56.2 59.2 56.3 18 Norridge 52.8 51.6 51.4 53.7 53.2 52.5 19 Stone Park 43.8 46.0 45.2 45.0 42.5 45.1 20 Mount Prospect 49.4 49.6 44.5 46.2 48.0 48.0 21 Mount Prospect 41.9 41.6 42.6 44.5 42.3 42.8 22 Norridge 59.8 59.3 57.9 59.6 59.6 59.2 23 Northlake 54.7 57.0 55.2 54.7 54.2 55.5 24 Park Ridge 47.3 44.7 47.0 -- 46.2 49.8 25 Park Ridge 55.9 54.0 54.0 56.6 55.2 55.3 26 Park Ridge 50.0 48.4 48.4 51.2 49.8 49.7 27 Rosemont 62.4 60.8 60.9 63.2 62.4 62.0 28 Schiller Park 68.7 67.7 66.5 67.4 68.4 67.6 29 Wood Dale 61.0 59.3 58.7 61.1 61.1 60.2 30 Wood Dale 45.8 46.8 44.9 47.0 46.4 46.2 31 Bensenville 64.3 63.2 62.5 65.2 -- 63.9 32 Wood Dale 57.2 58.0 56.6 57.7 59.5 57.4 33 Park Ridge 54.6 54.5 54.6 54.6 54.2 54.6 34 Elk Grove Village 49.6 50.9 49.7 50.9 50.3 50.3 35 Unincorporated Cook 47.3 49.2 47.3 47.5 46.9 47.9 37 Mount Prospect 35.6 37.4 41.6 42.3 35.1 40.1 42 Chicago 53.9 49.1 47.5 49.3 49.9 50.7 44 Itasca 58.7 57.0 56.7 59.3 59.6 58.1 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 (5 monitors). Green represents a decrease of 1 dB or more from same quarter of the previous year (8 monitors).

Chicago Department of Aviation Page 14 2nd Quarter 2019 Airline Ground Run-Up Report Chicago O'Hare International Airport Period: 2nd Quarter 2019 Time of Day: 24 Hours

All Airlines 2nd Quarter 2019 1st Quarter 2019 12 Month Avg. 1 Location Run-ups Percentage Run-ups Percentage Run-ups Percentage GRE 309 94% 215 93% 256 90% Other2 19 6% 17 7% 28 10% Total 328 100% 232 100% 284 100% GRE 67 91% 22 73% 42 82% Other2 7 9% 8 27% 9 18% Total 74 100% 30 100% 51 100% GRE 104 100% 97 100% 99 100% Other2 0 0% 0 0% 0 0% Total 104 100% 97 100% 99 100% GRE 89 100% 67 100% 80 99% Other2 0 0% 0 0% 1 1% Total 89 100% 67 100% 81 100% GRE 25 74% 15 65% 21 58% Other2 9 26% 8 35% 15 42% Total 34 100% 23 100% 36 100% GRE 24 89% 14 93% 14 82% Other Other2 3 11% 1 7% 3 18% Total 27 100% 15 100% 17 100%

2nd Quarter 2019

Location Total % of Total GRE 309 94.2% 2 Other 19 5.8% Total 328 100%

1 12 Month Average equals the average of: 3Q 2018, 4Q 2018, 1Q 2019, and 2Q 2019. 2 Spots 1, 2 and 2A were unavailable during 2Q 2019 due to Runway 4L/22R reconstruction. Alternate locations were coordinated with FAA Air Traffic on an as needed basis.

Chicago Department of Aviation Page 15 2nd Quarter 2019 Aircraft Ground Run-Up Report Chicago O'Hare International Airport Period: 2nd Quarter 2019 Time of Day: 24 Hours

2nd Quarter 2019 1st 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 2 1 50% 2 2 100%

A320 11 9 82% 6 6 100%

A321 3 3 100% 1 1 100%

B717 2 2 100% 1 1 100%

B737 77 76 99% 27 26 96%

B757 6 4 67% 4 1 25%

B767 0 0 0% 7 1 14%

B777 3 0 0% 1 0 0%

B787 7 0 0% 7 1 14%

CRJ200/700/900 96 96 100% 88 88 100%

DC10/MD10 2 1 50% 0 0 0%

E145 61 61 100% 66 66 100%

E170/175 49 49 100% 20 20 100%

MD11 1 0 0% 0 0 0%

MD80 1 1 100% 0 0 0%

MD90 2 2 100% 1 1 100%

Other 4 4 100% 1 1 100%

TOTAL 328 309 94% 232 215 93%

Chicago Department of Aviation Page 16 2nd Quarter 2019

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