Fly Quiet Program Chicago O Hare International Airport

1 st Quarter 215 Report Fly Quiet Program Chicago O Hare International Airport Visit the O Hare Noise Management Webpage on the Internet at www.flychicago.com

1 st Quarter 215 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 215 include: Departures Arrivals Most used nighttime departure runway: 28R 52% Most used nighttime arrival runway: 27L 46% 32L night departures increased by 7pp from 4Q 214 1L night arrivals increased by 13pp from 4Q 214 28R night departures decreased by 12pp from 4Q 214 27L night arrivals decreased by 6pp from 4Q 214 pp = Percentage Points Nighttime operations represent 1 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 1st Quarter 215

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 1st Quarter 215

Runway Use Report Period: 1 st Quarter 215 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 1Q 215 1 1 6 2 14 1 5 52 9 1 4Q 214 2 2 11 9 3 56 5 23 9 12 Month Avg. Average Daily Arrivals 1Q 215 2 2 11 9 3 56 5 23 9 4Q 214 12 Month Avg. 1 Departures (1 p.m. to 7 a.m.) Arrivals (1 p.m. to 7 a.m.) 8 8 7 7 6 6 5 5 4 4 3 3 2 2 1 1 Percentage Departure Utilization Percentage Arrival Utilization 1 1Q 215 1 1Q 215 2 4 9 3 1 2 46 52 6 9 8 5 2 7 19 14 Purple denotes Fly Quiet preferential departure and arrival runways. Chicago Department of Aviation Page 3 1st Quarter 215

Nighttime Hourly Operations Report Period: 1 st Quarter 215 Time of Day: 1: p.m. to 7: a.m. Average Departures by Hour 7 6 Average Departures 5 4 3 35 38 34 3 2 14 15 7 7 1 6 5 3 3 3 3 2 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 1Q15 4Q14 12 Month Average* Operations by Hour (%) 1Q 215 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 34.6% 14. 5.5% 3.4% 2.8% 1.7% 1.1% 6.9% 29.9% 1 Arrivals 17.8% 14.2% 5.3% 2.6% 1. 1.1% 7. 15.9% 34.9% 1 Average Arrivals by Hour 7 6 Average Arrivals 5 4 3 2 1 47 42 21 23 17 16 19 21 6 6 8 9 3 2 1 1 1 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 1Q15 4Q14 12 Month Average* * 12 Month Average equals the average of 2Q 214, 3Q 214, 4Q 214 and 1Q 215. Chicago Department of Aviation Page 4 1st Quarter 215

Nighttime Preferential Flight Track Summary Period: 1 st Quarter 215 Time of Day: 11: p.m. to 6: a.m. Runway 22L Departures Airline 1 st Quarter 215 Departures Average Deviation (nautical miles) 1 st Quarter 214 Departures Average Deviation (nautical miles) American Airlines 57.28 35.31 Delta Airlines 8.13 -- -- Envoy Air 3.44 13.98 Frontier Airlines 1.4 -- -- Republic Airlines 1.57 2 1.61 Sky West Aviation 2.13 3.71 Spirit Airlines 39.37 26.42 United Air Lines 4.42 14.5 United Express/Shuttle America 1.27 5 1.11 United Express/Trans States 1.54 8.45 Untied Express/Gojet 1.45 4.42 UPS 1.48 4.29 Overall 119.37 114.68 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 1st Quarter 215

Nighttime Preferential Flight Track Summary Period: 1 st Quarter 215 Time of Day: 11: p.m. to 6: a.m. Runway 28R Departures Airline 1 st Quarter 215 Departures Average Deviation (nautical miles) Aerologic 2.55 2.73 Aeromexico 11.16 119.22 AeroUnion 4.1 2.48 Air Canada 1.45 -- -- Air China Cargo 2.36 -- -- Air France 6.22 13.33 Airbridge Cargo Airlines 19.51 11.38 American Airlines 173.3 56.33 Asiana Airlines 39.21 45.2 Atlas Air 23.19 15.16 Cargolux Airlines 22.37 11.37 Cargolux Italia 1.38 -- -- Cathay Pacific Airways 24.48 12.39 China Airlines 2.15 1 st Quarter 214 Departures Average Deviation (nautical miles) China Cargo Airlines 8.39 8.38 China Southern Airlines 1.55 1.35 Delta Air Lines 11.23 -- -- Emirates 11.43 7.35 Envoy Air 163.19 13.25 Eva Airways 2.19 -- -- FedEx 1.26 54.23 Frontier Airlines 13.29 -- -- Jetblue Airways 2.27 2.14 Kalitta Air 5.11 -- -- Korean Air Lines 53.25 4.2 LOT 4.42 -- -- Lufthansa 5.77 3.12 Lufthansa Cargo 3.2 15.42 Nippon Cargo Airlines 28.38 24.31 Qantas Airways 4.14 1.27 Qatar Airways Company 3.57 3.45 Republic Airlines 93.15 52.45 Royal Jordanian 3.38 1.38 Scandinavian Airlines 3.29 7.32 Sky Regional Airlines 6.22 5.19 Sky West Aviation 46.22 -- -- Spirit Airlines 39.27 16.7 Swift Air 2.12 2.7 Turkish Airlines 5.34 8.34 United Air Lines 13.19 43.32 United Express/ASA 44.18 36.23 United Express/Gojet 36.26 19.39 United Express/Shuttle America 65.26 22.39 United Express/Trans States 15.22 11.49 Untied Express/Mesa 3.1 6.32 UPS 44.12 4.17 Yangtze River Express Airlines 6.19 1.72 Overall 1,366.29 816.34 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 6 1st Quarter 215

Nighttime Flight Track Report st Period: 1 Quarter 215 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 1C 14L 14R 22L 22R 27L 27R 28C 28R 32L 1 44% 89% 83% 89% 63% 1 14% <.5 42% 57% 72% 74%.5 < 1. 33% 43% 25% 24% 55% 9% 16% 25% 1% 2% 1% >1. 3% 2% 1% 32R 23% = not applicable Flight tracks shown until 3,' Mean Sea Level (MSL) Chicago Department of Aviation Page 7 1st Quarter 215

Nighttime Noise Complaint Report Period: 1st Quarter 215 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 118 9 Arlington Heights 13 6 Bensenville 17,53 58 Berkeley 9 9 Berwyn 1 1 Bloomingdale 47 14 Carol Stream 3 2 Chicago 39,615 7,152 Ward 36 1 1 Ward 38 3,293 8 Ward 39 9,879 257 Ward 4 6,124 59 Ward 41 7,433 275 Ward 45 5,21 137 Ward Other 2,538 1,197 Ward Unknown 5,146 5,146 Des Plaines 48 9 Downers Grove 5 2 Elgin 1 1 Elk Grove Village 2,537 219 Elmhurst 29 9 Elmwood Park 2 1 Evanston 93 2 Franklin Park 16 14 Glen Ellyn 66 1 Glencoe 1 1 Hanover Park 8 2 Harwood Heights 43 15 Highland Park 1 1 Hillside 16 3 Itasca 4,951 71 Kildeer 2 2 La Grange Park 3 1 Lincolnwood 144 7 Medinah 32 6 Mount Prospect 21 4 Naperville 1 1 Niles 7 3 Norridge 4,934 113 Northbrook 2 2 Northlake 36 3 Palatine 3 1 Park Ridge 1,18 87 River Forest 319 1 Riverside 2 1 Roscoe 1 1 Roselle 58 4 Rosemont 1 1 Schaumburg 184 8 Schiller Park 1,145 77 Villa Park 2 2 West Chicago 57 9 Wheaton 41 27 Wilmette 1 2 Winfield 16 14 Wood Dale 8,49 544 Unknown Community 1,17 1,17 Aircraft Noise 5 Vibration 8% Not Reported Low Flying 15% Frequency of Operations 27% 1Q 215 Total 83,437 9,72 4Q 214 Total 18,629 2,994 12 Month Average 2 35,119 4,716 1 Only includes calls made from the State of Illinois. 2 12 Month Average equals average of: 2Q 214, 3Q 214, 4Q 214 and 1Q 215 Chicago Department of Aviation Page 8 1st Quarter 215

Airline Ground Run-Up Report Period: 1 st Quarter 215 Time of Day: 24 Hours All Airlines 1 st Quarter 214 4 th Quarter 214 12 Month Avg. 1 Location Run-ups Percentage Run-ups Percentage Run-ups Percentage GRE 14 67% 188 76% 179 77% Other 68 33% 61 24% 54 23% Total 28 1 249 1 233 1 GRE 41 58% 9 71% 91 74% Other 3 42% 36 29% 31 26% Total 71 126 122 1 GRE 22 1 44 1 28 1 Other Total 22 1 44 1 28 1 GRE 45 1 3 1 31 99% Other 1% Total 45 1 3 1 31 1 GRE 15 3 11 32% 15 41% Other 35 7 23 68% 21 59% Total 5 1 34 1 35 1 Other GRE 17 1 13 1 11 88% Other 3 18% 2 15% 2 12% Total 17 1 13 1 13 1 Ground Run-Up Locations 1Q 215 Other 33% GRE 67% 1 12 Month Average equals the average of: 2Q 214, 3Q 21, 4Q 214 and 1Q 215. Chicago Department of Aviation Page 9 1st Quarter 215

Aircraft Ground Run-Up Report Period: 1 st Quarter 215 Time of Day: 24 Hours 1 st Quarter 215 4 th Quarter 214 Aircraft Run-ups Total Run-ups in GRE Percentage Use of GRE Run-ups Total Run-ups in GRE Percentage Use of GRE A319 7 1 14% 4 1 A32 5 5 1 5 4 8 B737 28 27 96% 46 43 93% B747 4 9 B757 6 1 17% 9 3 33% B767 36 5 14% 25 1 4% B777 2 15 DC9Q E135/145 2 2 1 5 5 1 MD8 17 17 1 49 49 1 Regional Jet (unspecified type) 62 62 1 37 37 1 Other 3 2 TOTAL 28 14 67% 249 188 76% Chicago Department of Aviation Page 1 1st Quarter 215

Rolling Meadows 1 Arlington Heights Prospect Heights 37 Glenview Northfield O Hare International Airport 1 Mount Prospect 21 Golf Permanent Noise Monitor Locations Itasca 34 Addison 12 14 29 Elk Grove Village Wood Dale 2 32 3 13 3 14R 9C 9R Bensenville Elmhurst 1L1C 9L 1R 14L 4L 65 DNL Des Plaines 23 32L 7 4R 27R 22R 28L Northlake 16 27C 27L 32R 28C 35 8 22L 28R 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 Niles 22 17 Harwood Heights Norridge 11 Elmwood Park River Forest 41 Morton Grove 5 Oak Park 38 45 Chicago 29 3 31 37 City of Chicago Rahm Emanuel Mayor 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: December 5, 214 File: ORD_RMT_Vers2.mxd Chicago Department of Aviation Page 11 1st Quarter 215

Nighttime Aircraft Noise Report Period: 1 st Quarter 215 Time of Day: 1: p.m. to 7: a.m. Metric: Aircraft Leq RMT # Community Last 4 Quarters Monitored Noise Levels 1 2Q 214 3Q 214 4Q 214 1Q 215 1Q 215 12 Month Avg. 1 Arlington Heights 47.5 44.3 44.6 45.9 46.5 45.8 2 Melrose Park 47.2 41.6 4. 42.2 48.2 45.1 3 Bensenville 54.3 56.2 56.1 54.6 52.9 54.9 4 Schiller Park 47.7 44.3 42. 42.2 53.6 45.8 5 Chicago 64.2 52.5 52.9 52.1 49.5 61.5 7 Des Plaines 44.7 44.5 43.1 41.4 42.2 43.7 8 Des Plaines 52.6 46.9 42.8 44.9 46.9 5.2 1 Rolling Meadows 49.4 42.9 42.1 44.3 43. 47.3 11 Chicago 56.7 45.8 42.3 43.1 5.2 53.8 12 Elk Grove Village 59.5 59.2 51.4 51.4 48. 57.1 13 Elk Grove Village 56.1 5.9 53.2 56.6 59.7 55.7 14 Elk Grove Village 5.4 46.5 47.3 49. 49.8 49.5 15 Franklin Park 45.4 42.1 39.5 4.1 41.4 43.5 16 Franklin Park 54.3 55.5 56.1 55.3 53.2 55.1 17 Harwood Heights 72.4 57.2 56.7 55.3 53. 69.5 19 Stone Park 47.3 42.2 4.7 4.8 4.6 45.2 2 Mount Prospect 6.5 49.1 44.5 44.7 51.1 57.6 21 Mount Prospect 37.2 36.7 38.3 38.1 36.2 37.8 22 Norridge 58.2 58.2 57.7 -- 56.7 56.8 23 Northlake 52.5 54.7 55.5 54.6 51.6 54. 24 Park Ridge 46.3 47.2 39.6 39.5 41.4 44.2 25 Park Ridge 52.7 5.9 52.1 51.3 49.5 52.2 26 Park Ridge 48.7 44.6 43.5 42.5 43.2 46.7 27 Rosemont 58.7 57.5 58.2 57.1 54. 58.2 28 Schiller Park 68. 66.8 67.8 66.8 67.2 67.7 29 Wood Dale 59.4 58.8 57. 56.9 54.7 58.3 3 Wood Dale 47.4 45.6 45.2 42.4 43.9 46. 32 Wood Dale 57.1 6.6 6.9 58.8 54.4 58.8 33 Park Ridge 51.3 5.8 49.7 48.1 45.1 5.3 34 Elk Grove Village 51.6 51.8 51.4 49.2 48. 51.1 35 Unincorporated Cook 47.5 46.9 48.8 47.4 46.7 47.9 37 Mount Prospect 48.1 36.7 35.6 35.6 46.3 45.3 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 (14 monitors). Green represents a decrease of 1 db or more from same quarter of the previous year (1 monitors). Chicago Department of Aviation Page 12 1st Quarter 215

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