Fly Quiet Program Chicago O Hare International Airport

1 st Quarter 216 Report Fly Quiet Program Chicago O Hare International Airport Visit the O Hare Noise Webpage on the Internet at www.flychicago.com/ordnoise

1 st Quarter 216 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 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 Quarterly Fly Quiet Report. This report is shared with Chicago Department of Aviation officials, the O'Hare Noise Compatibility Commission, the airlines, and the general public. The Fly Quiet Report contains detailed information regarding nighttime 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. Operations O Hare has eight 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 Nighttime Runway Use Report 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 nighttime hours of 1: p.m. to 7: a.m. The Nighttime Hourly Operations Report compares the arrivals and departures by hour 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. Highlights for 1Q 216 include: Departures Arrivals Most used nighttime departure runway: 28R 38% Most used nighttime arrival runway: 27L 38% 28R night departures increased by 7pp from 4Q 215 27L night arrivals increased by 16pp from 4Q 215 22L night departures decreased by 4pp from 4Q 215 28R night arrivals decreased by 8pp from 4Q 215 pp = Percentage Points Nighttime operations represent 1% of the overall daily operations Arrival Summary A summary of nighttime arrivals is provided for the two most-used arrival runways (28C and 27L); the airline summary is also compared to the data from the same quarter of the previous year. 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 Chicago Department of Aviation Page 1 1st Quarter 216

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 (28R and 32L); 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 Flight Track Report measures deviation (in nautical miles) from the preferred flight tracks and is divided into three categories: less than.5 miles between.5 and 1. miles greater than 1. miles Noise Complaints The Chicago Department of Aviation maintains a toll-free O Hare noise hotline (1-8-435-9569) and an on-line service at www.flychicago.com/ordnoise 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 at the bottom of the page 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 on-line feature. 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 Chicago Department of Aviation 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. 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. Aircraft Noise The Nighttime Aircraft Noise Report summarizes noise measurements from each of the 33 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 1 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 2 1st Quarter 216

Runway Use Report Period: 1 st Quarter 216 Time of Day: 1: p.m. to 7: a.m. Runway Use (1 p.m. to 7 a.m.) Source: Airport Noise Management System (ANMS) Runway Utilization 4L 4R 9L 9R 1L 1C 1R 14L 14R 22L 22R 27L 27R 28L 28C 28R 32L 32R Average Daily Departures 1Q 216 13 7 1 n/a 14 1 2 39 28 n/a 4Q 215 9 1 1 n/a 18 3 33 32 n/a 12 Month Avg. 1 12 8 2 2 5 38 26 2 Average Daily Arrivals 1Q 216 1 5 2 1 16 n/a 1 48 2 3 12 n/a n/a 4Q 215 6 1 1 19 1 n/a 3 1 31 6 38 25 n/a n/a 12 Month Avg. 1 5 3 9 2 2 45 6 39 13 n/a 8% Departures (1 p.m. to 7 a.m.) 8% Arrivals (1 p.m. to 7 a.m.) 7% 7% 6% 6% 5% 5% 4% 4% 3% 3% 2% 2% 1% 1% % % Percentage Departure Utilization Percentage Arrival Utilization 1Q 216 1Q 216 4 1 27 1 1 12 1 38 38 7 8 1 2 1 13 23 13 1 Purple denotes Fly Quiet preferential departure and arrival runways. Runway 1R-28L was commissioned on October 15, 215. Chicago Department of Aviation Page 3 1st Quarter 216

Nighttime Hourly Operations Report Period: 1 st Quarter 216 Time of Day: 1: p.m. to 7: a.m. Average Departures by Hour 7 6 Average Departures 5 4 3 41 43 29 31 2 13 11 8 8 1 6 6 3 4 3 3 1 1 1 1 1 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. Hour 1Q16 4Q15 12 Month Average* Operations by Hour (%) 1Q 216 1 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. Total Departures 39.2% 12.1% 5.5% 3.1% 2.6% 1.1%.8% 8.% 27.6% 1% Arrivals 14.3% 12.5% 4.7% 1.5% 1.1% 1.4% 8.6% 16.7% 39.3% 1% Average Arrivals by Hour 7 Average Arrivals 6 5 4 3 2 1 57 5 21 21 22 18 16 17 12 11 6 6 2 3 1 1 2 2 1 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. Hour 1Q16 4Q15 12 Month Average* * 12 Month Average equals the average of 2Q 215, 3Q 215, 4Q 215 and 1Q 216. Chicago Department of Aviation Page 4 1st Quarter 216

Nighttime Arrival Summary Period: 1 st Quarter 216 Time of Day: 11: p.m. to 6: a.m. Runway 28C Arrivals 1 st Quarter 216 1 st Quarter 215 Arrivals Arrivals Airline AeroMexico 17 25 AeroUnion 2 6 Air China Cargo 6 8 Air India 16 7 AirBridge Cargo Airlines 6 3 Alaska Airlines 7 3 America West Airlines 1 15 American Airlines 164 62 Asiana Airlines 12 7 Atlas Air 12 5 Cargolux Airlines 8 1 Cathay Pacific Airways 1 3 China Cargo Airlines 2 4 China Southern Airlines 1 2 Copa Airlines 5 5 Delta Air Lines 1 1 DHL/Airborne Express 4 4 Emirates 3 3 Envoy Air 166 39 FedEx 87 15 Frontier Airlines 23 9 JetBlue Airways 3 1 Korean Air Lines 5 1 Lufthansa Cargo 5 3 Nippon Cargo Airlines 1 -- Polar Air Cargo 3 3 Qantas Airways 2 2 Qatar Airways 2 6 Republic Airlines 26 27 Sky West Aviation 26 22 Spirit Airlines 4 37 Swift Air 1 -- TNT Airways 1 -- United Airlines 165 158 United Express/ASA 12 7 United Express/Gojet 5 5 United Express/Shuttle America 15 11 United Express/Trans States 11 9 UPS 65 69 Virgin America 1 -- Xtra Airways 1 -- Yangtze River Express Airlines 1 3 Total 944 699 Chicago Department of Aviation Page 5 1st Quarter 216

Nighttime Arrival Summary Period: 1 st Quarter 216 Time of Day: 11: p.m. to 6: a.m. Runway 27L Arrivals 1 st Quarter 216 1 st Quarter 215 Arrivals Arrivals Airline AeroMexico 68 18 AeroUnion 2 -- Air Choice One 1 6 Alaska Airlines 45 18 American Airlines 359 395 Atlas Air 5 16 Copa Airlines 27 36 Delta Air Lines 32 13 Delta Connection 2 3 DHL/Airborne Express 13 5 Eastern Airlines 1 -- Envoy Air 23 226 FedEx 5 7 Frontier Airlines 9 61 IFL Group 1 -- JetBlue Airways 25 3 Kalitta Air 1 -- Kalitta Charters 1 -- Netjets 2 -- Republic Airlines 44 87 Sky Regional Airlines 2 5 Sky West Aviation 6 124 Spirit Airlines 181 176 Swift Air 12 12 TNT Airways 1 -- United Airlines 541 1 United Express/ASA 58 665 United Express/Gojet 33 126 United Express/Shuttle America 16 22 United Express/Trans States 39 6 UPS 11 82 Virgin America 2 11 XOJet 1 3 Xtra Airways 3 -- Total 1,914 2,271 Chicago Department of Aviation Page 6 1st Quarter 216

Nighttime Preferential Flight Track Summary Period: 1 st Quarter 216 Time of Day: 11: p.m. to 6: a.m. Runway 28R Departures Airline Aerologic 8.3 2.55 AeroMexico 79.2 11.16 AeroUnion 5.2 4.1 Air China Cargo 33.37 2.36 Air France 3.35 6.22 Air India 1.58 -- -- AirBridge Cargo Airlines 21.48 19.51 American Airlines 16.36 173.3 Ameristar Jet Charter 1.1 -- -- Asiana Airlines 68.33 39.21 Atlas Air 7.38 23.19 British Airways 2.14 -- -- Cargolux Airlines 29.36 22.37 Cathay Pacific Airways 12.44 24.48 China Cargo Airlines 11.26 8.39 China Southern Airlines 5.44 1.55 Delta Air Lines 11.41 11.23 DHL/Airborne Express 1.12 -- -- Emirates 18.41 11.43 Envoy Air 66.42 163.19 Eva Airways 1.34 2.19 FedEx 58.31 1.26 Frontier Airlines 1.27 13.29 JetBlue Airways 1.48 2.27 Kalitta Air 2.3 5.11 Korean Air Lines 34.18 53.25 Lufthansa 2 1.1 5.77 Lufthansa Cargo 15.33 3.2 Nippon Cargo Airlines 33.3 28.38 Polar Air Cargo 1.24 -- -- Qantas Airways 11.4 4.14 Qatar Airways 12.45 3.57 Republic Airlines 13.54 93.15 Royal Jordanian Airlines 2.44 3.38 Scandinavian Airlines 7.61 3.29 Sky Regional Airlines 1.41 6.22 Sky West Aviation 41.46 46.22 Spirit Airlines 64.35 39.27 Swift Air 2.11 2.12 TNT Airways 7.35 -- -- Turkish Airlines 4.49 5.34 United Air Lines 93.38 13.19 United Express/ASA 39.25 44.18 United Express/Gojet 19.35 36.26 United Express/Shuttle America 19.48 65.26 United Express/Trans States 14.51 15.22 UPS 3.24 44.12 Yangtze River Express Airlines 4.46 6.19 Overall 1,89.37 1,355.29 Green represents a deviation of less than.5 nautical miles Orange represents a deviation between.5 and 1. nautical miles Red represents a deviation greater than 1. nautical mile 1 st Quarter 216 Departures Average Deviation (nautical miles) 1 st Quarter 215 Departures Average Deviation (nautical miles) Chicago Department of Aviation Page 7 1st Quarter 216

Nighttime Preferential Flight Track Summary Period: 1 st Quarter 216 Time of Day: 11: p.m. to 6: a.m. Runway 32L Departures Airline Aerologic 4.14 2.6 AeroMexico 37.15 26.16 AeroUnion 1.5 -- -- Air China Cargo 9.1 5.8 Air Choice One 2 1.65 2.53 Air France 4.5 1.15 AirBridge Cargo Airlines 14.16 4.36 Alaska Airlines 1.5 1.3 American Airlines 19.19 18.11 Asiana Airlines 15.9 5.9 Atlas Air 13.6 13.1 Cargolux Airlines 19.21 11.11 Cathay Pacific Airways 13.31 2.13 China Airlines 1.12 1.2 China Cargo Airlines 8.13 4.34 Delta Air Lines 1.12 1.12 Delta Connection/Compass 3.5 -- -- DHL/Airborne Express 2.33 3.32 Emirates 13.1 5.3 Envoy Air 13.13 72.17 FedEx 77.16 25.21 Frontier Airlines 12.13 5.27 IFL Group 1.16 -- -- JetBlue Airways 1.21 1.52 Kalitta Air 1.2 2.12 Korean Air Lines 12.9 11.1 LOT 2.17 3.18 Lufthansa 1.4 -- -- Lufthansa Cargo 5.12 6.22 Netjets 1.2 -- -- Nippon Cargo Airlines 27.12 11.9 Polar Air Cargo 1.18 1.1 Qantas Airways 4.13 -- -- Qatar Airways Company 4.47 2.21 Republic Airlines 16.16 28.19 Scandinavian Airlines 6.8 5.13 Sky Regional Airlines 1 1.45 2.16 Sky West Aviation 45.14 1.2 Spirit Airlines 41.17 1.18 Swift Air 2.9 2.8 TNT Airways 8.1 1.29 Turkish Airlines 2.11 4.7 United Airlines 142.17 27.14 United Express/ASA 33.7 8.11 United Express/Gojet 43.14 3.1 United Express/Shuttle America 24.15 13.19 United Express/Trans States 13.15 4.9 UPS 22.8 11.9 Yangtze River Express Airlines 2.15 1.17 Overall 957.19 372.16 Green represents a deviation of less than.5 nautical miles Orange represents a deviation between.5 and 1. nautical miles Red represents a deviation greater than 1. nautical mile 1 st Quarter 216 Departures Average Deviation (nautical miles) 1 st Quarter 215 Departures Average Deviation (nautical miles) Chicago Department of Aviation Page 8 1st Quarter 216

Nighttime Flight Track Report Period: 1 st Quarter 216 Time of Day: 11: p.m. to 6: a.m. Preferential Flight Track Existing Runways to be Decommissioned Existing Runways Runway Departures (in %) versus Deviation (in nautical miles) Future Runways Deviation 4L 4R 9L 9R 1C 1L 1R 14R 22L 22R 27L 27R 28C 28L 28R 32L <.5 89% n/a n/a 73% n/a 78% n/a 34% 47% n/a 88% n/a n/a n/a 77% 8%.5 < 1. % n/a n/a 25% n/a 2% n/a 33% 47% n/a 12% n/a n/a n/a 2% 19% >1. 11% n/a n/a 2% n/a 2% n/a 33% 6% n/a % n/a n/a n/a 3% 1% n/a = not applicable Flight tracks shown until 3,' Mean Sea Level (MSL) Chicago Department of Aviation Page 9 1st Quarter 216

Nighttime Noise Complaint Report Period: 1 st Quarter 216 Time of Day: 1: p.m. to 7: a.m. Complaints by Community 1 Nature of Noise Complaints Community Total Complaints Number of Complainants Addison 62 9 Alsip 1 1 Arlington Heights 2,16 14 Bartlett 12 6 Bensenville 93,21 68 Berkeley 6 6 Bloomingdale 642 33 Carol Stream 28 5 Chicago 83,698 22,27 Ward 38 3,324 79 Ward 39 15,436 236 Ward 4 2,743 57 Ward 41 19,553 234 Ward 45 7,99 135 Ward Other 13,679 363 Ward Unknown 21,864 21,166 Chicago Ridge 18 1 Des Plaines 49 1 Downers Grove 1 1 Elgin 1,26 4 Elk Grove Village 9,69 5,272 Elmhurst 183 12 Forest Park 1 1 Frankfort 2 2 Franklin Park 28 7 Geneva 11 11 Glen Ellyn 79 65 Glenview 51 4 Hanover Park 1 1 Harwood Heights 415 8 Hillside 1 4 Itasca 4,896 39 Kildeer 1 1 Lincolnwood 813 82 Lombard 1 1 Medinah 689 12 Melrose Park 5 3 Mount Prospect 1,36 16 Naperville 1 1 Niles 775 8 Norridge 2,44 132 Northbrook 4 2 Park Ridge 8,775 142 River Forest 1,251 1,251 River Grove 12 2 Roselle 274 6 Rosemont 1 1 Saint Charles 1 1 Schaumburg 1,55 56 Schiller Park 1,681 45 Skokie 37 3 South Elgin 7 1 St Charles 3 3 Unincorporated Cook 589 8 Villa Park 1 1 Wayne 381 4 West Chicago 1,167 8 Westchester 5 2 Wheaton 28 8 Winfield 26 26 Wood Dale 25,958 7,21 Community Unknown 3,972 2,49 Aircraft Noise 46% Vibration 1% Not Reported % Frequency of Operations 17% Low Flying 36% 1Q 216 Total 247,332 39,83 4Q 215 Total 244,493 36,264 12 Month Average 2 26,788 34,257 1 Only includes calls made from the State of Illinois. 2 12 Month Average equals average of: 2Q 215, 3Q 215, 4Q 215 and 1Q 216. Chicago Department of Aviation Page 1 1st Quarter 216

Airline Ground Run-Up Report Period: 1 st Quarter 216 Time of Day: 24 Hours All Airlines 1 st Quarter 216 4 th Quarter 215 12 Month Avg. 1 Location Run-ups Percentage Run-ups Percentage Run-ups Percentage GRE 166 81% 132 8% 141 73% Other 39 19% 33 2% 51 27% Total 25 1% 165 1% 191 1% GRE 83 78% 8 8% 73 76% Other 23 22% 2 2% 23 24% Total 16 1% 1 1% 96 1% GRE 21 1% 17 1% 18 1% Other % % % Total 21 1% 17 1% 18 1% GRE 31 97% 2 1% 26 99% Other 1 3% % 1% Total 32 1% 2 1% 26 1% GRE 15 58% 12 5% 14 37% Other 11 42% 12 5% 25 63% Total 26 1% 24 1% 39 1% Other GRE 16 8% 3 75% 1 87% Other 4 2% 1 25% 2 13% Total 2 1% 4 1% 11 1% Ground Run-Up Locations 1Q 216 Other 19% GRE 81% 1 12 Month Average equals the average of: 2Q 215, 3Q 215, 4Q 215 and 1Q 216 Chicago Department of Aviation Page 11 1st Quarter 216

Aircraft Ground Run-Up Report Period: 1 st Quarter 216 Time of Day: 24 Hours 1 st Quarter 216 4 th Quarter 215 Aircraft Run-ups Total Run-ups in GRE Percentage Use of GRE Run-ups Total Run-ups in GRE Percentage Use of GRE A319 5 3 6% 1 1 1% A32 5 5 1% 4 2 5% B737 68 67 99% 59 53 9% B747 1 2 2% 5 % B757 3 % 1 % B767 21 1 5% 14 1 7% B777 5 2 4% 6 1 17% DC9Q 1 % % E135/145 33 33 1% 18 18 1% MD8 21 21 1% 32 32 1% Regional Jet (unspecified type) 33 32 97% 23 23 1% Other % 2 1 5% TOTAL 25 166 81% 165 132 8% Chicago Department of Aviation Page 12 1st Quarter 216

Chicago Department of Aviation Page 13 1st Quarter 216

Nighttime Aircraft Noise Report Period: 1 st Quarter 216 Time of Day: 1: p.m. to 7: a.m. Metric: Aircraft Leq RMT # Community Last 4 Quarters Monitored Noise Levels 1 2Q 215 3Q 215 4Q 215 1Q 216 1Q 215 12 Month Avg. 1 Arlington Heights 47.4 49.6 49.2 48.4 45.9 48.7 2 Melrose Park 46.9 48.1 5.1 44.3 42.2 47.8 3 Bensenville 55.8 53.9 54.2 54.1 54.6 54.5 4 Schiller Park 47.2 -- 48.5 47.5 42.2 45.1 5 Chicago 53.3 51.1 51.7 51.9 52.1 52.1 7 Des Plaines 42.5 41.3 42.2 4.5 41.4 41.7 8 Des Plaines 49.6 45.8 44.8 43. 44.9 46.5 1 Rolling Meadows 44.8 44.7 44.2 43.9 44.3 44.4 11 Chicago 45.9 42.9 44.4 44.3 43.1 44.5 12 Elk Grove Village 53. 48.7 52.1 53. 51.4 52. 13 Elk Grove Village 58. 61.4 61.1 59.4 56.6 6.1 14 Elk Grove Village 52.2 53.5 54.5 53.2 49. 53.4 15 Franklin Park 42.3 38.2 41.5 39.7 4.1 4.7 16 Franklin Park 56.5 54.8 56. 53.9 55.3 55.4 17 Harwood Heights 55.8 57. 59.6 58.4 55.3 57.9 19 Stone Park 42.4 41.8 42.1 39.6 4.8 41.6 2 Mount Prospect 46.2 47.7 47.9 48.1 44.7 47.5 21 Mount Prospect 39.2 41.3 43.5 45.5 38.1 43. 22 Norridge -- 58.4 6.8 59.4 -- 58.4 23 Northlake 56. 57.2 55.4 54.2 54.6 55.8 24 Park Ridge 43.9 39.5 43.2 41.5 39.5 42.3 25 Park Ridge 54.4 5.6 52.5 53.3 51.3 52.9 26 Park Ridge 46.8 42.6 46.5 44.2 42.5 45.4 27 Rosemont 6.3 56.1 59.7 59.9 57.1 59.3 28 Schiller Park 66.4 64.9 66.6 64.1 66.8 65.6 29 Wood Dale 6.1 58.4 58.4 57.8 56.9 58.8 3 Wood Dale 44.1 44.4 44. 43.6 42.4 44. 32 Wood Dale 59.4 58.6 58.6 58.6 58.8 58.8 33 Park Ridge 51.8 5.6 51.1 47.6 48.1 5.5 34 Elk Grove Village 51.5 49.6 5.7 5.3 49.2 5.6 35 Unincorporated Cook 48.9 48.5 5.1 47.6 47.4 48.9 37 Mount Prospect 37.4 37.4 38.1 39.4 35.6 38.2 42 Chicago -- 45.5 46.9 44.9 -- n/a 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 (17 monitors). Green represents a decrease of 1 db or more from same quarter of the previous year (4 monitors). Chicago Department of Aviation Page 14 1st Quarter 216

Chicago Department of Aviation O Hare Noise Hotline: 1-8-435-9569 www.flychicago.com/ordnoise