Fly Quiet Program Chicago O Hare International Airport

st Quarter 28 Report Fly Quiet Program Chicago O Hare International Airport Visit the O Hare Noise Webpage on the Internet at www.flychicago.com/ordnoise

st Quarter 28 Report BACKGROUND On June 7, 997, 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 Quarterly 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 : p.m. - 7: a.m. It is the CDA s goal for the Fly Quiet Program to occur during the entire nine-hour nighttime period of : p.m. to 7: 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 : 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 Q 28 include: Average Start Time: :36 p.m. Average Stop Time: :47 a.m. Average Nightly Time in FQM: 7: Average Nightly Operations in FQM: 94 Airport Noise Compatibility Planning (4 CFR Part ) Chicago Department of Aviation Page st Quarter 28

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 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 2-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 minute increments to the current quarter with the previous quarter as well as with the 2-month average. Percentage is a ratio whereas a percentage point is the difference between two percentages. Highlights for Q 28 include: Departures Arrivals Most used nighttime departure runway: 28R 49% Most used nighttime arrival runway: 27L 38% 9R night departures increased by 7pp from 4Q 27 C night arrivals increased by pp from 4Q 27 32L night departures decreased by pp from 4Q 27 28R night arrivals decreased 4pp from 4Q 27 pp = Percentage Points Nighttime operations represent % of the overall daily operations ARRIVAL SUMMARY A summary of nighttime arrivals is provided for the two most-used arrival runways (27L and C); 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 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 L); 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: less than. miles; between. and. miles; and greater than. miles. Chicago Department of Aviation Page 2 st Quarter 28

NOISE COMPLAINTS The Chicago Department of Aviation maintains a toll-free O Hare noise hotline (-8-43-969) and an online 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 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 997, 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 27, the CDA relocated the GRE from its original location to a new location approximately, 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 2-month average and to the same quarter of the previous year. NOISE The Nighttime Aircraft Noise Report summarizes noise measurements from each of the 3 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 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 2-month average. Numbers displayed in red represent an increase of at least db over the aircraft Leq from the same quarter of the previous year whereas numbers displayed in green represent a decrease of at least db from the aircraft Leq from the same quarter of the previous year. Chicago Department of Aviation Page 3 st Quarter 28

Runway Use Report Period: st Quarter 28 Time of Day: : p.m. to 7: a.m. Runway Use ( p.m. to 7 a.m.) Source: Airport Noise Management System (ANMS) Runway Utilization 4L 4R 9L 9R L C R 22L 22R 27L 27R 28L 28C 28R 33 Average Daily Departures Q 28 4 2 43 2 4Q 27 9 4 4 7 2 Month Avg. 3 6 4 2 6 4 4 6 Average Daily Arrivals Q 28 7 7 28 6 28 7 4Q 27 6 6 2 7 9 34 2 2 Month Avg. 3 7 2 27 4 44 7 3 8% Departures ( p.m. to 7 a.m.) 8% Arrivals ( p.m. to 7 a.m.) 7% 7% 6% 6% % % 4% 4% 3% 3% 2% 2% % % % % Percentage Departure Utilization Percentage Arrival Utilization Q 28 # Q 28 4 3 7 38 49 2 2 2 2 2 # Chicago Department of Aviation Page 4 st Quarter 28

Runway Use Report Period: st Quarter 28 Time of Day: Fly Quiet Mode (FQM) Runway Use (FQM) Source: Airport Noise Management System (ANMS) Runway Utilization 4L 4R 9L 9R L C R 22L 22R 27L 27R 28L 28C 28R 33 Average Daily Departures Q 28 3 6 2 4 8 4Q 27 6 6 2 2 2 Average Daily Arrivals Q 28 6 23 9 6 4Q 27 6 6 2 2 2 8% Departures 8% Arrivals 7% 7% 6% 6% % % 4% 4% 3% 3% 2% 2% % % % % Percentage Departure Utilization Percentage Arrival Utilization Q 28 # Q 28 3 39 7 4 2 3 # Purple denotes Fly Quiet preferential departure and arrival runways. Chicago Department of Aviation Page st Quarter 28

Nighttime Arrival Summary Period: st Quarter 28 Time of Day: Fly Quiet Mode (FQM) Runway 27L Arrivals Airline Name Type st Quarter 28 Arrivals st Quarter 27 2 Arrivals AeroMexico P 8 4 Air Canada P 2 3 Air Canada Express/Sky Regional P 4 Alaska Airlines P 4 3 American Airlines P 478 237 American Eagle P 6 American Eagle/Envoy P 7 9 American Eagle/PSA Airlines P 3 Atlas Air C 2 Copa Airlines P 34 Delta Air Lines P 48 43 Delta Connection/Endeavor Air P 3 Emirates P 2 FedEx C 4 Frontier Airlines P 76 General Aviation 2 42 Icelandair P Interjet P 49 3 JetBlue Airways P 4 26 Kalitta Air C Qantas Airways C Qatar Airways Company P 7 Republic Airlines P 28 32 Sky West Aviation P 4 224 Spirit Airlines P 28 84 United Airlines P 44 29 United Express/ASA P 2 United Express/Gojet P 23 22 United Express/Trans States P 9 UPS C 3 7 Virgin America P 3 6 Volaris P 23 2,7 7,43 Note : Passenger Carrier (P) or Dedicated Cargo (C) Note 2: From : p.m. to 6: a.m. Percent of Carrier Category Q8 Q7 United & American 6% 69% Other Domestic 23% 2% Other International % 7% Dedicated Cargo % % General Aviation % 3% % % Chicago Department of Aviation Page 6 st Quarter 28

Nighttime Arrival Summary Period: st Quarter 28 Time of Day: Fly Quiet Mode (FQM) Runway C Arrivals Airline Name Type st Quarter 28 Arrivals st Quarter 27 2 Arrivals Aerologic C 4 AeroMexico P 4 9 Air Canada P 3 Air India P 4 AirBridge Cargo Airlines C 7 Alaska Airlines P 22 3 American Airlines P 22 98 American Eagle P 22 American Eagle/Envoy P 4 23 American Eagle/PSA Airlines P 2 Asiana Airlines P 4 Atlas Air C 6 9 Cargolux Airlines C 8 Cathay Pacific Airways P 3 2 China Airlines C 2 China Cargo Airlines C China Southern Airlines C 2 3 Copa Airlines P 2 6 Delta Air Lines P 47 9 Delta Connection/Endeavor Air P 2 Emirates P 2 Eva Airways P 2 FedEx C 42 27 Frontier Airlines P 48 24 General Aviation 4 8 Interjet P 34 9 jetblue Airways P 7 7 Kalitta Air C Korean Air Lines P 8 7 LOT P Lufthansa Cargo C 3 Nippon Cargo Airlines C 3 Polar Air Cargo C 2 2 Qantas Airways P 2 Qatar Airways P 3 2 Republic Airlines P 2 7 Silk Way Airlines C 2 Singapore Airlines Cargo C Sky West Aviation P 49 Spirit Airlines P 4 29 Turkish Airlines P 4 United Airlines P 343 27 United Express/ASA P 7 26 United Express/Gojet P 7 4 United Express/Trans States P 6 9 UPS C 22 22 Volaris P 2 Western Global Airlines C 7,37 8 Note : Passenger Carrier (P) or Dedicated Cargo (C) Note 2: From : p.m. to 6: a.m. Carrier Category Percent of Q8 Q7 United & American 3% 6% Other Domestic 8% 4% Other International 8% 9% Dedicated Cargo 7% 4% General Aviation 4% 2% % % Chicago Department of Aviation Page 7 st Quarter 28

Nighttime Preferential Flight Track Summary Period: st Quarter 28 Time of Day: Fly Quiet Mode (FQM) Runway L Departures Airline st Quarter 28 st Quarter 27 2 Name Type Departures Average Deviation (nautical miles) Departures Average Deviation (nautical miles) Aerologic P.7 2.3 AeroMexico P 26.2 26.22 AirBridge Cargo Airlines C 3.23 9.39 American Airlines P.22 38.47 American Eagle P.8 American Eagle/Envoy P 4.2 3.23 Asiana Airlines P 3.23 36.6 Atlas Air C 6.22.29 British Airways P 2.2.2 Cargolux Airlines C. 7.37 Cathay Pacific Airways P 8.24.27 China Airlines C 4.6.2 China Southern Airlines C.2. Delta Air Lines P 2.22.7 Emirates P 3.2 9.3 Eva Airways P 7.4.3 FedEx C 8.27.24 Frontier Airlines P 2.8.2 General Aviation 2.2 3.3 Interjet P 23.2.26 Jetblue Airways P. Kalitta Air C 6.23 4.22 Korean Air Lines P 3.7 2.2 LOT P 2.23. Lufthansa P.2.28 Lufthansa Cargo C 9.4 6.2 Nippon Cargo Airlines C 8.9 2.22 Polar Air Cargo C.38 Qantas Airways P 4. 6.9 Qatar Airways P 6.2 3.7 Republic Airlines P.4.3 Scandinavian Airlines P 4.2 3.6 Singapore Airlines Cargo C.9.4 Sky West Aviation P 6.8 7.4 Spirit Airlines P 6.33. Turkish Airlines P 3.23 3. United Airlines P 7.7 22.32 United Express/ASA P 2.24 4.2 United Express/Gojet P 2.8 United Express/Trans States P.9 4.22 UPS C 36.3.2 Volaris P 2.4 Western Global Airlines C 4.24 Yangtze River Express Airlines C 3.7 Overall 49.2 379.2 Green represents a deviation of less than. nautical miles Orange represents a deviation between. and. nautical miles Percent of Carrier Category Red represents a deviation greater than. nautical mile Q8 Q7 Note : Passenger Carrier (P) or Dedicated Cargo (C) United & American 2% 2% Note 2: From : p.m. to 6: a.m. Other Domestic 2% 3% Other International 38% 39% Dedicated Cargo 39% 36% General Aviation % % % % Chicago Department of Aviation Page 8 st Quarter 28

Nighttime Preferential Flight Track Summary Period: st Quarter 28 Time of Day: Fly Quiet Mode (FQM) Runway 28R Departures Airline st Quarter 28 st Quarter 27 2 Name Type Departures Average Deviation (nautical miles) Departures Average Deviation (nautical miles) Aer Lingus P.3 Aerologic C 9.4 9.3 AeroMexico P 67.36 64.28 AeroUnion C.24 3.2 Air Canada P 3.9. Air Canada Express/Sky Regional P.2 Air France P.4 3.34 AirBridge Cargo Airlines C 6.6 2.7 Alaska Airlines P 6.38.92 American Airlines P 228.38.33 American Eagle/Envoy P 34. 8.29 Asiana Airlines P 67.3 77.37 Atlas Air C 6.33 34.23 Cargolux Airlines C 26.2 28. Cathay Pacific Airways P 3.6.47 China Airlines C 3.36 4.43 China Cargo Airlines C.29 4.2 China Southern Airlines C 7.47.4 Delta Air Lines P 7.7 6.6 Emirates P 3.6 9.43 Eva Airways P 37. 4. FedEx C 8.33 2.23 Frontier Airlines P.3 2.2 General Aviation 4.3 3.46 jetblue Airways P 3. 3.2 Kalitta Air C 3.4 Korean Air Lines P 29.27 3.34 LOT P 2.87 3.4 Lufthansa P 2.4 4.38 Lufthansa Cargo C 6.3.44 National Air Cargo C..72 Nippon Cargo Airlines C 24.3 6.37 Qantas Airways P 9.32 7. Qatar Airways P 22.47 8.6 Republic Airlines P 7.74.3 Royal Jordanian P.2 Scandinavian Airlines P 6.2 4.3 Singapore Airlines Cargo C.32 Sky West Aviation P 88.37 34.8 Spirit Airlines P 79.3 8.29 Turkish Airlines P 6.9 2.33 United Airlines P 66.44 6.3 United Express/ASA P.77 8.8 United Express/Gojet P 8.3 3.4 United Express/Trans States P.7 2.26 UPS C 28.2.4 Yangtze River Express Airlines C 3.32 3.33 Overall,63.43 888.37 Green represents a deviation of less than. nautical miles Orange represents a deviation between. and. nautical miles Percent of Red represents a deviation greater than. nautical mile Carrier Category Q8 Q7 Note : Passenger Carrier (P) or Dedicated Cargo (C) United & American 4% 33% Note 2: From : p.m. to 6: a.m. Other Domestic 9% 2% Other International 24% 32% Dedicated Cargo 27% 23% General Aviation % % % % Chicago Department of Aviation Page 9 st Quarter 28

Nighttime Departure Track Report Period: st Quarter 28 Time of Day: : p.m. to 7: a.m. 3,9 FQM Departures 4,787 Non-FQM2 Departures 7,877 Departures Existing Runways to be Decommissioned Preferential Flight Track Existing Runways Future Runways Runway Departures (in %) versus Deviation (in nautical miles) Deviation 4L 4R (# tracks) <. % % (2,37). <. % % (98) >. % % (43) 9L 9R 93% 4% 3% C L R 22L 22R 27L 27R 9% % 4% 9% 4% % 4% % % % % % 28C 28L 28R 33 9% % 8% % % % = not applicable Note : Runways C 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,' Above Ground Level (AGL). Chicago Department of Aviation Page st Quarter 28

Nighttime Noise Complaint Report Period: st Quarter 28 Time of Day: : p.m. to 7: a.m. Complaints by Community Nature of Noise Complaints Community Complaints Number of Complainants Addison 9 Arlington Heights 93 4 Bartlett 3 Bensenville 9,46 Berkeley 3 3 Bloomingdale 36 Burlington Carol Stream Chicago 8,3 7,2 Ward 38 647 26 Ward 39 2,9 44 Ward 4 26 Ward 4 3,92 28 Ward 4,896 36 Ward Other 2,88 37 Ward Unknown 6,77 6,767 Des Plaines 24 9 Downers Grove 9 2 Elgin 7 3 Elk Grove Village 4,749 2,3 Elmhurst 39 Evanston Franklin Park 3 6 Geneva,423,42 Gilberts 27 Glen Ellyn 9 Glenview 23 6 Hanover Park 366 3 Harwood Heights 66 Hillside 8 Inverness 2 Itasca,22 8 Lincolnwood 83 3 Medinah 69 7 Mount Prospect 3 Niles 432 3 Norridge 433 6 Northlake 2 2 Palatine 4 Park Ridge 6,893 4,289 River Forest 3 3 River Grove 4 Rolling Meadows 2 Roselle 3 Rosemont 2 Schaumburg 446 349 Schiller Park 42 Skokie 76 2 South Barrington 3 St. Charles 2 Unincorporated Cook 343 2 Wayne 28 3 West Chicago 4 2 West Dundee 2 Western Springs 6 Wheaton 2 Winfield 4 Wood Dale,34 3,73 Community Unknown Not Reported % Aircraft Noise 64% Low Flying 3% Frequency of Operations 2% Vibration 2% Q 28 73,897 29,389 4Q 27 389,46 7,89 2 Month Average 2 34,49,667 Only includes calls made from the State of Illinois. 2 2 Month Average equals average of: 2Q 27, 3Q 27, 4Q 27 and Q 28. Chicago Department of Aviation Page st Quarter 28

Chicago Department of Aviation Page 2 st Quarter 28

Nighttime Aircraft Noise Report Period: st Quarter 28 Time of Day: : p.m. to 7: a.m. Metric: Aircraft Leq RMT # Community Last 4 Quarters Monitored Noise Levels 2Q 27 3Q 27 4Q 27 Q 28 Q 27 2 Month Avg. Arlington Heights 49.4 4.4 49.4.9 46.6 49.2 2 Melrose Park.4. 47.9 47.7 43.2 49.7 3 Bensenville 4.7 4.6. 6.6 3.8.4 4 Schiller Park 47.8 47.7 48.3 46.6 4.3 47.6 Chicago 3.9 8. 2.3.6.7 4.7 7 Des Plaines 4.4 4.6 4.4 39. 38. 4.8 8 Des Plaines.4 3.6 49. 4. 42.2. Rolling Meadows 49. 46.8 4. 38. 4. 46.2 Chicago 46.8 48.3 44. 44.8 44.2 46.3 2 Elk Grove Village 3.3 49..7..9.2 3 Elk Grove Village 8.8 7.2.7 4. 7.4 6.8 4 Elk Grove Village.4 46.2 49.3 47..4 49. Franklin Park 42. 4.8 39.7 4. 39.4 4. 6 Franklin Park 4.8.7.8 4.2 2.3.2 7 Harwood Heights 7.2 8.4 8..2 6.8 7.4 8 Norridge.3 9 Stone Park 4.8 4. 42.4 4.8 4.9 4.6 2 Mount Prospect 4.6 42.7 4.4 47. 44.6 4. 2 Mount Prospect 4.7 38.9 39.9 4. 37.2 4.2 22 Norridge 9.8 62.3 9.4 8. 6.6 6.2 23 Northlake 4.7 6.7 4. 3.4 2.. 24 Park Ridge 46. 47. 43.7 4.9 4.7 4.3 2 Park Ridge 4. 4.3 3.3 3. 3.6 3.8 26 Park Ridge 48.6 47.2 47. 4.9 4.9 47.3 27 Rosemont 6.2 6.7 6. 6.3 6.4 6.6 28 Schiller Park 68.3 67.6 68. 66.8 67.6 67.8 29 Wood Dale 6.2 6. 8.2 8.6 9. 9.4 3 Wood Dale 46.7 46.2 48. 44.7 46.7 46.6 32 Wood Dale 7.9 6. 6.4 7.4 7.4 9. 33 Park Ridge 2.4 2.6 2.2.4 47.9 2. 34 Elk Grove Village.2..7 49.4 49..7 3 Unincorporated Cook 48. 48. 48.4 46.2 4. 47.9 37 Mount Prospect 36.7 37.7 36.8 38. 37. 37.4 42 Chicago 49. 48.9 48. 48.3 44.7 48.7 44 Itasca 7.8 Leq (Equivalent Sound Level): The average sound energy level during a stated period of time. Red represents an increase of db or more from same quarter of the previous year (4 monitors). Green represents a decrease of db or more from same quarter of the previous year (6 monitors). Chicago Department of Aviation Page 3 st Quarter 28

Airline Ground Run-Up Report Period: st Quarter 28 Time of Day: 24 Hours All Airlines Other Location GRE Other GRE Other GRE Other GRE Other GRE Other GRE Other st Quarter 28 4th Quarter 27 Run-ups Percentage 26 86% 3 4% 2 % 7 8% 2 % 82 % 4 98% 2% 4 % 8 98% 2 2% 82 % 2 % 2 49% 4 % % % % Run-ups Percentage 9 9% 24 8% 34 % 2 2% 64 7% 8 % 4% 62 86% 72 % 8 2% 69 79% 87 % 6% 26 84% 3 % 7% 24 83% 29 % 2 Month Avg. Run-ups Percentage 2 4% 29 46% 28 % 46 4% 39 46% 8 % 26 4% 22 46% 48 % 6 66% 29 34% 8 % 7 39% 27 6% 44 % 7 37% 2 63% 9 % Ground Run-Up Locations Q 28 Other 4% GRE 86% 2 Month Average equals the average of: 2Q 27, 3Q 27, 4Q 27 and Q 28. Note: GRE was out of service for relocation from August 4, 27 through December 4, 27. Chicago Department of Aviation Page 4 st Quarter 28

Aircraft Ground Run-Up Report Period: st Quarter 28 Time of Day: 24 Hours st Quarter 28 4 th Quarter 27 Aircraft Run-ups Run-ups in GRE Percentage Use of GRE Run-ups Run-ups in GRE Percentage Use of GRE A39 4 8% 3 2 67% A32 8 8% 2 2 7% B737 88 7 8% 63 4 22% B747 % % B77 4 27% 9 % B767 4 % 7 4% B777 2 % % B787 % 2 % CRJ2/7 7 96% 67 6 24% DC9Q % % E3/4 66 6 98% 4 4 2% MD8 3 3 % 22 7 32% Other % 3 2 67% TOTAL 2 26 86% 34 9 9% Note: GRE was out of service for relocation from August 4, 27 through December 4, 27. Chicago Department of Aviation Page st Quarter 28

Chicago Department of Aviation O Hare Noise Hotline: -8-43-969 www.flychicago.com/ordnoise