Fly Quiet Program Chicago O Hare International Airport

3 rd Quarter 213 Report Fly Quiet Program Chicago O Hare International Airport Chicago Department of Aviation Visit the O Hare Noise Management Webpage on the Internet at www.flychicago.com

3 rd Quarter 213 Report Background In 1997, Mayor Richard M. Daley 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 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 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 3Q 213 include: Departures Arrivals Most used nighttime departure runway: 32L 4% Most used nighttime arrival runway: 1L 28% 1L night departures increased by 5pp from 2Q 213 27L night arrivals increased by 5pp from 2Q 213 28R night departures decreased by 7pp from 1Q 213 28R night arrivals decreased by 6pp from 2Q 213 pp = Percentage Points Nighttime operations represent 11% of the overall daily operations Preferential Flight Tracks As part of the Fly Quiet Program, the Chicago Department of Aviation worked with the O'Hare Noise Compatibility Commission, the airlines, and the air traffic controllers to identify preferred runways and flight tracks for nighttime operations at O Hare. The preferred routes direct aircraft over less-populated areas in an effort to limit the effects of noise on the surrounding communities. Chicago Department of Aviation Page 1 3rd Quarter 213

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 (22L 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 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 the 1 hold pad. The 32L hold pad is closed as of February 28, 21. 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 the 32L and 1 hold pads 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 3rd Quarter 213

Nighttime Runway Use Report Period: 3 rd Quarter 213 Time of Day: 1: p.m. to 7: a.m. Runway Use Source: Airport Noise Management System (ANMS) Runway Utilization 4L 4R 9L 9R 1L 14L 14R 22L 22R 27L 27R 28R 32L 32R Average Daily Departures 3Q 213 3 8 12 5 1 31 4 48 9 2Q 213 7 9 5 3 1 3 14 5 9 12 Month Avg. 2 8 6 3 1 28 1 47 9 Average Daily Arrivals 3Q 213 6 1 4 2 32 13 18 3 25 3 2Q 213 6 3 37 3 25 14 11 2 33 5 12 Month Avg. 7 1 3 1 26 11 15 3 35 4 Departures 7% 6% 5% 4% 3% 2% 1% % Arrivals 7% 6% 5% 4% 3% 2% 1% % Percentage Departure Utilization Percentage Arrival Utilization 8 3Q 213 2 2 3Q 213 9 2 4 22 6 1 13 4 1 28 17 4 2 26 4 Chicago Department of Aviation Page 3 3rd Quarter 213

Nighttime Hourly Operations Report Period: 3 rd Quarter 213 Time of Day: 1: p.m. to 7: a.m. Average Departures by Hour 7 6 Count of Total Departures 5 4 3 2 1 45 46 15 19 5 7 4 4 2 2 1 1 1 1 7 6 42 42 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 3Q13 2Q13 12 Month Average* Operations by Hour (%) 3Q 213 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 36.6% 12.5% 4.2% 2.9% 1.7% 1.2%.8% 5.8% 34.8% 11% Arrivals 14.6% 12.5% 4.5% 2.2%.7% 1.6% 7.5% 18.4% 38.% 1% Average Arrivals by Hour 7 6 54 49 Count of Total Arrivals 5 4 3 2 1 21 25 18 19 6 9 3 4 1 1 2 2 11 8 26 23 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 3Q13 2Q13 12 Month Average* * 12 Month Average equals the average of 4Q 212, 1Q 213, 2Q 213 and 3Q 213. Chicago Department of Aviation Page 4 3rd Quarter 213

Nighttime Preferential Flight Track Summary Period: 3 rd Quarter 213 Time of Day: 11: p.m. to 6: a.m. Runway 22L Departures Airline 3 rd Quarter 213 Departures Average Deviation (nautical miles) 3 rd Quarter 212 Departures Average Deviation (nautical miles) Aeromexico 8.21 2.86 Air France 1.71 -- -- American Airlines 19.55 17.49 American Eagle 39.75 9 1.5 Asiana Airlines 2.2 1.55 Atlas Air 5.11 1.73 British Airways 5.63 1.2 Cargolux Airlines 3.97 -- -- Cathay Pacific Airways 3.43 1.55 Delta Air Lines 1.43 3.64 Delta Connection/Express Airlines 1.52 -- -- FedEx 19.19 9.43 Korean Air Lines 4.11 -- -- Lufthansa 1 1.37 -- -- Multi-Aero 1 2.4 -- -- Nippon Cargo Airlines 3.16 2.6 Republic Airlines 2 1.37 -- -- Spirit Airlines 29.52 2.7 TACA 1.37 -- -- United Air Lines 26.4 18.78 United Express/ASA 21.61 17.5 United Express/Chautauqua Airlines 5.96 -- -- United Express/Gojet Airlines 4.79 2 1.72 United Express/Shuttle America 2.86 4 1.39 United Express/Sky West 17.44 6.68 United Express/Trans States 8.7 -- -- Untied Express/Mesa 2.53 4.47 UPS 9.25 2.31 US Airways 44.26 22.31 Overall 33.61 141.67 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 Chicago Department of Aviation Page 5 3rd Quarter 213

Nighttime Preferential Flight Track Summary Period: 3 rd Quarter 213 Time of Day: 11: p.m. to 6: a.m. Runway 32L Departures Airline ABX Air 1.2 -- -- Aerologic 6.11 -- -- Aeromexico 26.23 33.14 AeroUnion 5.7 1.2 Air Canada Express 3.15 1 2.32 Air China Cargo 1.19 4.13 Air France 5.19 7.22 Airbridge Cargo Airlines 3.36 8.18 Aitheras Aviation Group 1.22 -- -- American Airlines 46.42 112.35 American Eagle 174.39 145.44 Asiana Airlines 25.19 18.18 Atlas Air 18.2 9.12 Aviation Advisor 1.18 -- -- British Airways 3.76 1.25 Cargolux Airlines 13.15 17.24 Cargolux Italia 2.12 -- -- Cathay Pacific Airways 19.33 29.32 Central Airlines 1. -- -- China Airlines 1.13 -- -- China Cargo Airlines 7.2 15.14 Delta Air Lines 2.11 16.81 Delta Connection/Express Airlines 4.38 1.1 Emirates 1.4 -- -- Evergreen International Airlines 3.13 3.17 FedEx 86.25 12.22 Interstate Equipment Leasing 1.21 -- -- Jetblue Airways 3.76 6.76 Korean Air Lines 15.15 31.18 Lufthansa 3.4 2.11 Lufthansa Cargo 8.37 8.12 Netjets Aviation 5.6 2.5 Nippon Cargo Airlines 42.14 47.11 Qantas Airways 4.29 4.21 Qatar Airways 14.7 8.22 Republic Airlines 3.61 -- -- Singapore Airlines Cargo 3.1 11.35 Spirit Airlines 3.27 75.39 Swiss International Air Lines 1.5 -- -- TACA 15.25 15.22 Turkish Airlines 1.1 -- -- United Air Lines 19.38 195.37 United Express/ASA 88.27 17.27 United Express/Chautauqua Airlines 24.46 15.38 United Express/Gojet Airlines 28.25 38.31 United Express/Mesa 16.63 14.38 United Express/Shuttle America 77.32 14.8 United Express/Sky West 44.4 2.26 United Express/Trans States 18.69 19.46 UPS 27.16 12.14 US Airways 52.21 75.36 Virgin America 1.12 3.34 Overall 1,89.25 1,252.33 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 3 rd Quarter 213 Departures Average Deviation (nautical miles) 3 rd Quarter 212 Departures Average Deviation (nautical miles) Chicago Department of Aviation Page 6 3rd Quarter 213

Nighttime Flight Track Report Period: 3rd Quarter 213 Time of Day: 11: p.m. to 6: a.m. Existing Runways to be Decommissioned Preferential Flight Track Existing Runways Future Runways Runway Departures (in %) versus Deviation (in nautical miles) Deviation 4L 4R 9L 9R 1L <.5 92% 5%.5 < 1. % % 9% 4% 5% >1. 8% 5% 21% 6% 27% 7% 9% 14L 68% 14R 22L 22R 27L 27R 28R % 77% 87% 64% 37% % 15% 5% 16% 12% 11% 1% 8% 8% 2% 88% 52% % 32L 32R = not applicable Flight tracks shown until 3,' Mean Sea Level (MSL) Chicago Department of Aviation Page 7 3rd Quarter 213

Nighttime Noise Complaint Report Period: 3 rd Quarter 213 Time of Day: 1: p.m. to 7: a.m. Community Complaints by Community 1 Total Complaints Number of Complainants Total Complaints 2 4 6 8 1, Arlington Heights 19 8 Bellwood 1 1 Bensenville 2 2 Berkeley 4 4 Berwyn 1 1 Bloomingdale 1 1 Buffalo Grove 1 1 Carol Stream 12 2 Chicago 854 28 Ward 38 1 1 Ward 39 67 27 Ward 41 611 123 Ward 45 137 29 Ward Other 23 17 Ward Unknown 15 11 Des Plaines 48 12 Elk Grove Village 3 3 Elmhurst 173 168 Elmwood Park 1 1 Franklin Park 5 1 Gilberts 1 1 Glen Ellyn 5 1 Glenview 8 3 Harwood Heights 5 4 Hillside 12 3 Itasca 15 1 Kenilworth 8 6 Kildeer 1 1 Lake Barrington 1 1 Medinah 1 1 Melrose Park 2 1 Morton Grove 5 1 Mount Prospect 11 3 Niles 2 2 Norridge 3 3 Oak Park 4 2 Palatine 1 1 Park Ridge 256 77 Riverwoods 1 1 Rolling Meadows 44 6 Roselle 31 6 Schiller Park 9 6 Villa Park 3 2 Wilmette 1 1 Wood Dale 61 11 3Q 213 Total 1,76 567 2Q 213 Total 1,747 643 12 Month Average 2 1,338 522 Nature of Noise Complaints Not Reported % Low Flying 17% Frequency of Operations 14% Aircraft Noise 68% Vibration 1% 1 Only includes calls made from the State of Illinois. 2 12 Month Average equals average of: 4Q 212, 1Q 213, 2Q 213 and 3Q 213 Chicago Department of Aviation Page 8 3rd Quarter 213

Airline Ground Run-Up Report Period: 3 rd Quarter 213 Time of Day: 24 Hours All Airlines 3 rd Quarter 213 2 nd Quarter 213 12 Month Avg. 1 Location Run-ups Percentage Run-ups Percentage Run-ups Percentage GRE 21 76% 195 78% 198 77% 1L Pad 65 24% 54 22% 6 23% Total 275 1% 249 1% 258 1% GRE 115 76% 86 76% 99 78% 1L Pad 37 24% 27 24% 28 22% Total 152 1% 113 1% 127 1% GRE 47 96% 56 1% 53 97% 1L Pad 2 4% % 2 3% Total 49 1% 56 1% 54 1% GRE 19 9% 25 93% 19 95% 1L Pad 2 1% 2 7% 1 5% Total 21 1% 27 1% 2 1% GRE 18 5% 7 23% 13 34% 1L Pad 18 5% 23 77% 25 66% Total 36 1% 3 1% 38 1% Other GRE 11 65% 21 91% 15 78% 1L Pad 6 35% 2 9% 4 22% Total 17 1% 23 1% 19 1% 1L Pad 24% Ground Run-up Locations 3Q 213 GRE 76% 1 12 Month Average equals the average of: 4Q 212, 1Q 213, 2Q 213 and 3Q 213 Chicago Department of Aviation Page 9 3rd Quarter 213

Aircraft Ground Run-Up Report Period: 3 rd Quarter 213 Time of Day: 24 Hours 3 rd Quarter 213 2 nd Quarter 213 Aircraft Run-ups Total Run-ups in GRE Percentage Use of GRE Run-ups Total Run-ups in GRE Percentage Use of GRE A319 1 % 2 1 5% A32 5 3 6% 1 4 4% B737 22 2 91% 14 13 93% B747 % 2 % B757 19 9 47% 13 1 8% B767 27 1 4% 2 1 5% B777 11 1 9% 7 % DC9Q 1 1 1% 2 2 1% E135/145 54 49 91% 65 65 1% MD8 1 95 95% 74 73 99% Regional Jet (unspecified type) 34 31 91% 36 35 97% Other 1 % 4 % TOTAL 275 21 76% 249 195 78% Chicago Department of Aviation Page 1 3rd Quarter 213

Rolling Meadows 1 Itasca 34 Addison 1 Arlington Heights 12 14 29 Elk Grove Village Wood Dale 2 32 3 Mount Prospect 13 3 Bensenville Elmhurst Prospect Heights 21 65 DNL Des Plaines 23 7 37 Northlake 16 35 8 15 Stone Park 19 27 Rosemont 28 Schiller Park 4 Franklin Park 2 24 Melrose Park Park Ridge 26 25 41 33 River Grove 36 Glenview Niles 22 17 Harwood Heights Norridge 11 Elmwood Park River Forest 41 Northfield Golf Morton Grove 5 Oak Park 38 45 Chicago 29 3 31 37 O Hare International Airport Permanent Noise Monitor Locations City of Chicago Rahm Emanuel Mayor Department of Aviation Rosemarie S. Andolino Commissioner Legend Permanent Noise Monitors (32) Existing Runways Existing Runways to be Decommissioned Future Runways O Hare Modernization Program Build-Out Noise Contour (65 DNL) Chicago Ward Boundaries Community Boundaries Miles 1 2 Date: May 2, 213 File: ORD_RMT_Vers2.mxd Chicago Department of Aviation Page 11 3rd Quarter 213

Nighttime Aircraft Noise Report Period: 3 rd Quarter 213 Time of Day: 1: p.m. to 7: a.m. Metric: Aircraft Leq RMT # Community Last 4 Quarters Monitored Noise Levels 1 4Q 212 1Q 213 2Q 213 3Q 213 3Q 212 12 Month Avg. 1 Arlington Heights 5.2 48.9 5.9 5.5 51.1 5.2 2 Melrose Park 44.1 41. 45.7 45.1 43.4 44.3 3 Bensenville 5.6 5.1 51.8 5.1 5.1 5.7 4 Schiller Park 48. 47.3 48.5 45.3 49.8 47.4 5 Chicago 47.2 47.2 48.1 47.8 51.8 47.6 7 Des Plaines 39.6 42.7 44.8 42.5 41.8 42.8 8 Des Plaines 45.9 5.9 51.9 49.1 5.2 5. 1 Rolling Meadows 49.8 48. 59.9 51.5 5. 55. 11 Chicago 53.7 5.5 53.2 45.5 51. 51.7 12 Elk Grove Village 5.3 49.9 5.5 53.4 48.1 51.3 13 Elk Grove Village 64.3 63.4 63.4 66.8 65.2 64.7 14 Elk Grove Village 53.4 52. 53.4 53.1 54.2 53. 15 Franklin Park 46.1 44.4 48.6 46.2 46.4 46.6 16 Franklin Park 56.8 52.7 55.9 55.3 55. 55.4 17 Harwood Heights 56.8 55.9 56.4 58.5 57.7 57. 19 Stone Park 42.8 41.3 42.5 41.8 42. 42.1 2 Mount Prospect 51.2 48.9 51.1 52.8 51.4 51.2 21 Mount Prospect 44.1 43.9 46.3 44.7 45.6 44.9 22 Norridge 59.3 59.6 58.8 59.1 59.1 59.2 23 Northlake 55.4 54.9 55.7 56.3 53.8 55.6 24 Park Ridge 39.5 41.4 44.7 41.5 43. 42.2 25 Park Ridge 43.6 44.8 48.5 47.9 46.1 46.7 26 Park Ridge 4.6 44.1 48.5 43.7 45.5 45.2 27 Rosemont 52.3 53.1 55.5 54.3 54.3 54. 28 Schiller Park 69.2 69.9 67.8 68.2 69.2 68.9 29 Wood Dale 55.7 54.9 59.5 58. 58.1 57.4 3 Wood Dale 44.8 45. 47.6 44.8 44.6 45.7 32 Wood Dale 54.2 54.4 53.7 54. 53. 54.1 33 Park Ridge 45.5 46.2 48.7 48.2 48.9 47.4 34 Elk Grove Village 5. 5.9 52.9 47. 51.6 5.7 35 Unincorporated Cook 5.2 5.2 5.1 49.2 48.3 5. 37 Mount Prospect 43. 46.4 51.2 43.2 43.5 47.3 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 (8 monitors). Green represents a decrease of 1 db or more from same quarter of the previous year (9 monitors). Chicago Department of Aviation Page 12 3rd Quarter 213

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