Fly Quiet Program Chicago O Hare International Airport

4 th 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

4 th 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 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 4Q 213 include: Departures Arrivals Most used nighttime departure runway: 32L 44% Most used nighttime arrival runway: 27L 26% 28R night departures increased by 23pp from 3Q 213 28C night arrivals increased by 2pp from 3Q 213 22L night departures decreased by 13pp from 3Q 213 1L night arrivals decreased by 22pp from 3Q 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 4th 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 (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 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 4th Quarter 213

Runway Use Report Period: 4 th Quarter 213 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 14L 14R 22L 22R 27L 27R 28C 28R 32L 32R Average Daily Departures 4Q 213 2 4 5 1 12 1 26 43 3 3Q 213 3 8 12 5 1 31 4 48 9 12 Month Avg. 3 9 8 4 1 3 8 48 9 Average Daily Arrivals 4Q 213 1 1 2 7 4 2 9 2 29 3 22 28 1 3Q 213 6 1 4 2 32 13 18 3 25 3 12 Month Avg. 8 1 36 2 28 11 16 3 31 4 Departures (1 p.m. to 7 a.m.) 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 3 4Q 213 3 2 4Q 213 2 1 3 44 8 4 2 26 26 5 6 25 1 4 2 1 13 1 Runway 1C-28C was commissioned on October 17, 213. Chicago Department of Aviation Page 3 4th Quarter 213

Nighttime Hourly Operations Report Period: 4 th 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 34 45 11 15 5 5 3 4 2 2 1 1 1 1 6 7 36 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 4Q13 3Q13 12 Month Average* Operations by Hour (%) 4Q 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 34.4% 1.8% 5.% 3.5% 2.% 1.3% 1.% 5.8% 36.1% 1% Arrivals 17.5% 11.7% 4.5% 1.9%.9% 1.8% 8.% 18.3% 35.4% 1% Average Arrivals by Hour 7 Count of Total Arrivals 6 5 4 3 2 1 54 4 26 19 21 2 18 13 5 9 11 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 4Q13 3Q13 12 Month Average* * 12 Month Average equals the average of 1Q 213, 2Q 213, 3Q 213 and 4Q 213. Chicago Department of Aviation Page 4 4th Quarter 213

Nighttime Preferential Flight Track Summary Period: 4 th Quarter 213 Time of Day: 11: p.m. to 6: a.m. Runway 28R Departures 4 th Quarter 213 4 th Quarter 212 Average Average Departures Deviation Departures Deviation Airline (nautical miles) (nautical miles) ABX 5.21 6.36 Aerologic 4.28 2.29 Aeromexico 123.3 137.29 AeroUnion 4.42 6.42 Air China Cargo 7.18 -- -- Air France 19.3 16.28 Airbridge Cargo Airlines 2.46 3.27 American Airlines 27.59 47.87 American Eagle 81.21 116.37 Asiana Airlines 35.2 46.24 Atlas Air 45.26 37.24 British Airways 7.58 2.61 Cargolux Airlines 12.27 12.39 Cargolux Italia 3.46 -- -- Cathay Pacific Airways 2.62 18.42 China Airlines 7.25 -- -- China Cargo Airlines 11.36 1.43 Delta Air Lines 1.23 4 1.38 Delta Connection/Express Airlines 1.9 1.14 Emirates 4.58 1.4 Evergreen International Airlines 1.9 2.13 Executive Jet Management 1.13 -- -- FedEx 75.21 98.37 Frontier Airlines 1.13 -- -- Jetblue Airways 1.41 1.6 Kalitta Air 7.23 1.6 Korean Air Lines 42.24 78.21 LOT 3.83 2 1.4 Lufthansa 2 1.17 3.27 Lufthansa Cargo 16.41 35.46 Midwest Aviation Division 1.3 -- -- National Air Cargo Group 1.19 -- -- Netjets Aviation 3.19 1.36 Nippon Cargo Airlines 31.29 48.31 Qantas Airways 4.14 3.39 Qatar Airways 1.24 4.43 Republic Airlines 4.27 -- -- Scandinavian Airlines 3.33 2.97 Singapore Airlines Cargo 6.4 9.33 Spirit Airlines 9.45 29.66 Swift Air 1.17 -- -- TACA 1.12 24.42 Travel Management Company 1.9 -- -- Turkish Airlines 7.24 3.28 United Air Lines 41.37 44.74 United Express/ASA 41.42 88.36 United Express/Chautauqua Airlines 23.37 7.35 United Express/Gojet Airlines 11.44 12.32 United Express/Shuttle America 25.33 15.76 United Express/Sky West 15.45 14.42 United Express/Trans States 11.34 4.24 Untied Express/Mesa 9.36 9.67 UPS 51.15 31.31 US Airways 35.35 45.42 Overall 938.33 1,94.43 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 4th Quarter 213

Nighttime Preferential Flight Track Summary Period: 4 th Quarter 213 Time of Day: 11: p.m. to 6: a.m. Runway 32L Departures Airline Aerologic 1.15 26.24 Aeromexico 15.29 3.11 AeroUnion 6.34 9.11 Air Canada Express 2.57 1.47 Air China Cargo 9.19 -- -- Air France 6.1 9.23 Airbridge Cargo Airlines 8.16 16.12 American Airlines 48.28 59.34 American Eagle 56.32 17.32 Asiana Airlines 27.18 26.17 Atlas Air 26.15 86.27 British Airways 6.13 1.3 Cargolux Airlines 16.31 8.1 Cargolux Italia 3.16 -- -- Cathay Pacific Airways 12.18 16.19 China Airlines 4.15 -- -- China Cargo Airlines 8.2 1.1 Emirates 4.16 -- -- Eva Airways 2.21 2.25 FedEx 76.24 1.4 Jetblue Airways 2 1.12 1.2 Kalitta Air 2.9 2.7 Korean Air Lines 18.11 1.11 Lufthansa Cargo 6.51 5.16 Netjets Aviation 1.11 6.28 Nippon Cargo Airlines 19.11 1.7 Qantas Airways 6.18 24.9 Qatar Airways 7.13 4.26 Republic Airlines 19.42 -- -- Scandinavian Airlines 6.13 1.15 Singapore Airlines Cargo 5.5 5.15 Spirit Airlines 31.4 1.11 Swift Air 1 1.64 -- -- Turkish Airlines 4.9 14.11 United Air Lines 78.29 1.3 United Express/ASA 38.26 94.27 United Express/Chautauqua Airlines 18.33 13.23 United Express/Gojet Airlines 11.21 22.38 United Express/Mesa 5.71 1.52 United Express/Shuttle America 28.36 11.42 United Express/Sky West 14.31 19.27 United Express/Trans States 21.32 1.49 UPS 22.12 17.11 US Airways 55.16 55.17 Western Air Charter 1.8 -- -- Overall 753.29 751.2 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 4 th Quarter 213 Departures Average Deviation (nautical miles) 4 th Quarter 212 Departures Average Deviation (nautical miles) Chicago Department of Aviation Page 6 4th Quarter 213

Nighttime Flight Track Report th Period: 4 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 93%.5 < 1. 7% 2% 6% % % >1. % 7% 18% 9% 13% 91% 76% 14L 91% 14R 22L 22R 27L 27R 28R 32L 32R 87% 37% 91% 84% 9% 8% 57% 6% 1% 4% 14% 6% 3% 5% 6% 6% = not applicable Flight tracks shown until 3,' Mean Sea Level (MSL) Chicago Department of Aviation Page 7 4th Quarter 213

Nighttime Noise Complaint Report Period: 4th Quarter 213 Time of Day: 1: p.m. to 7: a.m. Complaints by Community 1 Community Total Complaints Number of Complainants Addison 5 3 Arlington Heights 43 9 Barrington 1 1 Bensenville 88 33 Berkeley 4 4 Bloomingdale 11 3 Brookfield 1 1 Chicago 1,554 332 Ward 36 9 7 Ward 38 2 2 Ward 39 453 73 Ward 41 653 149 Ward 45 351 55 Ward Other 72 32 Ward Unknown 14 14 Des Plaines 2 2 Downers Grove 1 1 Elk Grove Village 1 8 Elmhurst 19 188 Franklin Park 13 13 Harwood Heights 14 12 Hillside 2 2 Itasca 6 4 Kenilworth 1 1 Kildeer 3 3 Lincolnwood 3 2 Mount Prospect 54 4 Niles 2 1 Norridge 1,41 2 Oak Park 3 3 Park Ridge 161 44 Rolling Meadows 1 1 Schiller Park 45 13 Villa Park 1 1 Wood Dale 134 45 Total Complaints 5 1, 1,5 2, 4Q 213 Total 3,394 754 3Q 213 Total 1,76 569 12 Month Average 2 1,947 614 Nature of Noise Complaints Not Reported % Low Flying 14% Frequency of Operations 1% Vibration 2% Aircraft Noise 74% 1 Only includes calls made from the State of Illinois. 2 12 Month Average equals average of: 1Q 213, 2Q 213, 3Q 213 and 4Q 213 Chicago Department of Aviation Page 8 4th Quarter 213

Airline Ground Run-Up Report Period: 4 th Quarter 213 Time of Day: 24 Hours All Airlines 4 th Quarter 213 3 rd Quarter 213 12 Month Avg. 1 Location Run-ups Percentage Run-ups Percentage Run-ups Percentage GRE 29 81% 21 76% 25 79% 1L Pad 49 19% 65 24% 54 21% Total 258 1% 275 1% 259 1% GRE 127 83% 115 76% 19 81% 1L Pad 26 17% 37 24% 26 19% Total 153 1% 152 1% 135 1% GRE 27 1% 47 96% 47 98% 1L Pad % 2 4% 1 2% Total 27 1% 49 1% 47 1% GRE 17 1% 19 9% 21 95% 1L Pad % 2 1% 1 5% Total 17 1% 21 1% 22 1% GRE 16 46% 18 5% 12 35% 1L Pad 19 54% 18 5% 22 65% Total 35 1% 36 1% 34 1% Other GRE 22 85% 11 65% 17 79% 1L Pad 4 15% 6 35% 5 21% Total 26 1% 17 1% 21 1% 1L Pad 19% Ground Run-up Locations 4Q 213 GRE 81% 1 12 Month Average equals the average of: 1Q 213, 2Q 213, 3Q 213 and 4Q 213. Chicago Department of Aviation Page 9 4th Quarter 213

Aircraft Ground Run-Up Report Period: 4 th Quarter 213 Time of Day: 24 Hours 4 th Quarter 213 3 rd 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 2 2 1% 1 % A32 14 8 57% 5 3 6% B737 16 12 75% 22 2 91% B747 % % B757 1 3 3% 19 9 47% B767 17 3 18% 27 1 4% B777 11 2 18% 11 1 9% DC9Q 3 2 67% 1 1 1% E135/145 47 44 94% 54 49 91% MD8 118 113 96% 1 95 95% Regional Jet (unspecified type) 18 18 1% 34 31 91% Other 2 2 1% 1 % TOTAL 258 29 81% 275 21 76% Chicago Department of Aviation Page 1 4th Quarter 213

Rolling Meadows 1 Arlington Heights Mount Prospect Prospect Heights 37 Glenview Northfield Golf O Hare International Airport Permanent Noise Monitor Locations Itasca 34 Addison 1 12 14 29 Elk Grove Village Wood Dale 2 32 3 13 3 21 14R 9C 9R 1L 1C 9L Bensenville 14L 4L 1R 65 DNL Des Plaines 23 32L 7 4R 27R 22R 28L 32R 16 27C 27L 28C 8 22L 28R 15 27 Rosemont 28 Schiller Park 4 Franklin Park 24 Park Ridge 26 25 41 33 River Grove 36 Niles 22 17 Harwood Heights Norridge 11 Elmwood Park 41 Morton Grove 5 38 45 Chicago 3 31 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 Elmhurst Northlake 35 Stone Park 19 2 Melrose Park River Forest Oak Park 29 37 Miles 1 2 Date: December 17, 213 File: ORD_RMT_Vers2.mxd Chicago Department of Aviation Page 11 4th Quarter 213

Nighttime Aircraft Noise Report Period: 4 th Quarter 213 Time of Day: 1: p.m. to 7: a.m. Metric: Aircraft Leq RMT # Community Last 4 Quarters Monitored Noise Levels 1 1Q 213 2Q 213 3Q 213 4Q 213 4Q 212 12 Month Avg. 1 Arlington Heights 48.9 5.9 5.5 49.4 5.2 5. 2 Melrose Park 41. 45.7 45.1 44. 44.1 44.3 3 Bensenville 5.1 51.8 5.1 54.3 5.6 51.9 4 Schiller Park 47.3 48.5 45.3 44.7 48. 46.7 5 Chicago 47.2 48.1 47.8 49. 47.2 48.1 7 Des Plaines 42.7 44.8 42.5 41.9 39.6 43.1 8 Des Plaines 5.9 51.9 49.1 48.7 45.9 5.4 1 Rolling Meadows 48. 59.9 51.5 47.8 49.8 54.9 11 Chicago 5.5 53.2 45.5 47.8 53.7 5.2 12 Elk Grove Village 49.9 5.5 53.4 49.5 5.3 51.1 13 Elk Grove Village 63.4 63.4 66.8 62.1 64.3 64.3 14 Elk Grove Village 52. 53.4 53.1 52.1 53.4 52.7 15 Franklin Park 44.4 48.6 46.2 42.6 46.1 46. 16 Franklin Park 52.7 55.9 55.3 52.4 56.8 54.4 17 Harwood Heights 55.9 56.4 58.5 54.7 56.8 56.6 19 Stone Park 41.3 42.5 41.8 4.4 42.8 41.5 2 Mount Prospect 48.9 51.1 52.8 55.1 51.2 52.5 21 Mount Prospect 43.9 46.3 44.7 38.3 44.1 44.1 22 Norridge 59.6 58.8 59.1 59.2 59.3 59.2 23 Northlake 54.9 55.7 56.3 53.2 55.4 55.2 24 Park Ridge 41.4 44.7 41.5 42.9 39.5 42.8 25 Park Ridge 44.8 48.5 47.9 49.2 43.6 47.9 26 Park Ridge 44.1 48.5 43.7 42.4 4.6 45.4 27 Rosemont 53.1 55.5 54.3 53.5 52.3 54.2 28 Schiller Park 69.9 67.8 68.2 69.2 69.2 68.9 29 Wood Dale 54.9 59.5 58. 55.6 55.7 57.4 3 Wood Dale 45. 47.6 44.8 46.1 44.8 46. 32 Wood Dale 54.4 53.7 54. 56.9 54.2 55. 33 Park Ridge 46.2 48.7 48.2 46.9 45.5 47.6 34 Elk Grove Village 5.9 52.9 47. 49.4 5. 5.6 35 Unincorporated Cook 5.2 5.1 49.2 47.6 5.2 49.4 37 Mount Prospect 46.4 51.2 43.2 46.8 43. 47.8 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 (13 monitors). Green represents a decrease of 1 db or more from same quarter of the previous year (12 monitors). Chicago Department of Aviation Page 12 4th Quarter 213

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