Airport Noise Management System Quarterly Report. Chicago Midway International Airport

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1 Airport Noise Management System Quarterly Report City of Chicago Department of Aviation 3rd Quarter 2008 July, August and September Visit the Community Resource Center on the Internet at

2 City of Chicago Department of Aviation Airport Noise Management System Quarterly Report Background Installed in 1996, the Airport Noise Management System (ANMS) enables the City of Chicago to monitor the amount of noise being generated over the communities surrounding Midway by the aircraft operating at the Airport. The ANMS collects, analyzes and processes data from a number of sources of information including a network of 42 noise monitors (12 around Midway), FAA radar data, weather information and calls to the noise hotline. Records on over 120,000 flights and 400,000 noise events are recorded by the ANMS each month for the Chicago Airport System. The City of Chicago and the Midway Noise Compatibility Commission utilize data from the ANMS to facilitate the development and management of noise mitigation and abatement programs at the Airport. The following reports summarize pertinent monthly information from that data concerning the noise levels and operations at the Airport. Fleet Mix Summary Report The Fleet Mix report summarizes the number and type of aircraft operating at Midway International Airport. The report is summarized in four ways: fleet mix for each airline during all hours of the day; fleet mix for each airline during the nighttime hours (10PM to 7AM); fleet mix for each aircraft type during all hours of the day and fleet mix of each aircraft type during the nighttime hours. This report displays the average fleet mix at Midway from July through the end of September In 1990, Congress enacted legislation to eliminate all Stage 2 aircraft operating in the continental United States by the year A program was created to "phaseout" the older, louder Stage 2 aircraft over a ten-year period to achieve full compliance by the 2000 deadline. As of January 2000, all aircraft operating at Midway Airport and within the United States were Stage 3. Stage 3 aircraft, such as the Boeing 757 (B757) and newer Boeing 737's (B737) use a quieter type of engine that significantly reduces noise at the source. Also, a Stage 3 aircraft can be a previous Stage 2 aircraft with the engines retrofitted with a "Hush-kit", such as the Boeing 727 (B72Q), Boeing (B73Q) and DC-9 (DC9Q). Monthly Runway Use Report The runways at Midway are utilized at different times primarily depending upon the prevailing wind conditions on the airfield, as well as any runway maintenance. Aircraft performance requirements make it necessary for aircraft to depart and land into the wind for safety reasons. City of Chicago Department of Aviation Page 1

3 The Runway Use Report presents the average number of daily operations on each runway and the percentage of use for each runway. The percentage of use for each runway is shown graphically for departures and arrivals. This data is for all hours of the day and night and for all aircraft types in July, August and September Annual Noise Level Report The Annual Noise Level Reports summarizes measurement results from each of the 12 noise monitors located around the airport. The data presented displays the Day Night Average Noise Levels (DNL). DNL is a daily noise metric that sums all of the noise that takes place throughout the day. It measures the loudness of the noise events, the number of events and also weights nighttime noise (10 pm to 7 am) by a factor of 10 to account for the lower background noise levels during the nighttime hours. The data displays the measured aircraft DNL for each month, each quarter and the year-to-date measurement. Aircraft noise is noise associated with known aircraft operations at Midway. The quarterly noise levels for each site are shown graphically on the second page of the report. The daily aircraft DNL noise level varies from day to day. This is primarily because different runways are used under different wind conditions; which effects where the aircraft fly. The daily aircraft DNL for each day of the month between July and September are shown graphically for each noise monitoring location around Midway. Also shown are the monthly average number of noise events, by noise level, for each location between July and September. Noise Complaint Reports The Department of Aviation maintains a noise complaint hotline for citizen complaints to express their concern about particular incidents or aircraft noise levels in general. The noise complaint report summarizes the number of noise complaints received, where the complaints were located and the nature of the disturbance. The tabular report lists the number of calls by community as well as the number of individual callers during July, August and September. The graph at the bottom of the page illustrates the primary nature of the disturbance that the caller identified. The second page of the report graphically illustrates on a map where the calls were located. City of Chicago Department of Aviation Page 2

4 Airline Jet Fleet Mix Summary Report Chicago Midway Airport Period: July 2008 to September 2008 Time of Day: Operations for All Hours of the Day Airline Daily Jet Operations Percentage of Total Stage Stage Total Percent 2 3 of Total Continental Express BTA % Continental Airlines COA % Comair, Inc. COM % Frontier FFT % Northwest Airlines NWA % Southwest Airlines SWA % Shuttle America TCF % Air Trans TRS % Other Airlines % Airport Total City of Chicago Department of Aviation Page 3 Printed 10/13/2008

5 Aircraft Jet Fleet Mix Summary Report Chicago Midway Airport Period: July 2008 to September 2008 Time of Day: Operations for All Hours of the Day Jet Aircraft Operations Percentage of Total FAR 36 Average Percent Stage Per Day of Total B % B72Q % B % B % CRJ % CRJ % CRJ % DC9Q % E % E % E % A % MD % Other Aircraft % Stage % Stage % Total 531 City of Chicago Department of Aviation Page 4 Printed 10/13/2008

6 Airline Jet Fleet Mix Summary Report Chicago Midway Airport Period: July 2008 to September 2008 Time of Day: Nighttime Operations (10pm to 7am) Airline Daily Jet Operations Percentage of Total Stage Stage Total Percent 2 3 of Total Continental Express BTA % Continental Airlines COA % Comair, Inc. COM % Frontier FFT % Northwest Airlines NWA % Southwest Airlines SWA % Shuttle America TCF % Air Trans TRS % Other Airlines % Airport Total City of Chicago Department of Aviation Page 5 Printed 10/13/2008

7 Aircraft Jet Fleet Mix Summary Report Chicago Midway Airport Period: July 2008 to September 2008 Time of Day: Nighttime Operations (10pm to 7am) Jet Aircraft Operations Percentage of Total FAR 36 Average Percent Stage Per Day of Total B % B72Q % B % B % CRJ % CRJ % CRJ % DC9Q % E % E % E % A % MD % Other Aircraft % Stage % Stage % Total 57 City of Chicago Department of Aviaiton Page 6 Printed 10/13/2008

8 Runway Use Summary Report (All Hours) Period: July 2008 Time of Day: All Hours Runway Utilization (All Hours) Source: Airport Noise Management System (ANMS) Runway Utilization (All Hours) Runway 04L &04R 13C 22L & 22R 31C Flight Direction NE SE SW NW Average Daily Operations Departures Arrivals Percentage Utilization Departures 18% 1% 30% 51% Arrivals 20% 1% 25% 54% Departures (All Hours) Arrivals (All Hours) 80% 70% 60% 50% 40% 30% 20% 10% 0% 04L &04R 13C 22L & 22R 31C 80% 70% 60% 50% 40% 30% 20% 10% 0% 04L &04R 13C 22L & 22R 31C Percentage Departure Utilization Percentage Arrival Utilization C 22R 22L 13C 22R 22L 04L 04L 30 04R 31C 1 04R 31C City of Chicago Department of Aviation Page 7 Printed 10/13/2008

9 Runway Use Summary Report (All Hours) Period: August 2008 Time of Day: All Hours Runway Utilization (All Hours) Source: Airport Noise Management System (ANMS) Runway Utilization (All Hours) Runway 04L &04R 13C 22L & 22R 31C Flight Direction NE SE SW NW Average Daily Operations Departures Arrivals Percentage Utilization Departures 42% 1% 16% 41% Arrivals 45% 1% 13% 41% Departures (All Hours) Arrivals (All Hours) 80% 70% 60% 50% 40% 30% 20% 10% 0% 04L &04R 13C 22L & 22R 31C 80% 70% 60% 50% 40% 30% 20% 10% 0% 04L &04R 13C 22L & 22R 31C Percentage Departure Utilization Percentage Arrival Utilization C 22R 22L 13C 22R 22L 04L 04L 16 04R 31C 1 04R 31C City of Chicago Department of Aviation Page 8 Printed 10/13/2008

10 Runway Use Summary Report (All Hours) Period: September 2008 Time of Day: All Hours Runway Utilization (All Hours) Source: Airport Noise Management System (ANMS) Runway Utilization (All Hours) Runway 04L &04R 13C 22L & 22R 31C Flight Direction NE SE SW NW Average Daily Operations Departures Arrivals Percentage Utilization Departures 36% 2% 18% 44% Arrivals 41% 2% 13% 44% Departures (All Hours) Arrivals (All Hours) 80% 70% 60% 50% 40% 30% 20% 10% 0% 04L &04R 13C 22L & 22R 31C 80% 70% 60% 50% 40% 30% 20% 10% 0% 04L &04R 13C 22L & 22R 31C Percentage Departure Utilization Percentage Arrival Utilization C 22R 22L 13C 22R 22L 04L 04L 18 04R 31C 2 04R 31C City of Chicago Department of Aviation Page 9 Printed 10/13/2008

11 Annual Airport Noise Report Summary (Aircraft DNL) Period: January 2008 to December 2008 Metric: Aircraft DNL Neighborhood: All Sites RMS Community Monthly Noise Levels Quarterly Noise Levels Year 2007 # Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 1Q 2Q 3Q 4Q to Annual Date 301 Cicero Chicago Chicago Chicago Chicago Chicago Chicago Burbank Bridgeview Summit Stickney Chicago City of Chicago Department of Aviation Page 11 Printed 10/13/2008

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13 Annual Airport Noise Report Summary (Aircraft DNL) Period: January 2008 to December 2008 Metric: Aircraft DNL Neighborhood: All Sites 1Q 2Q 3Q 4Q YTD DNL Noise Level Chicago Stickney Summit Bridgeview Burbank Chicago Chicago Chicago Chicago Chicago Chicago Cicero City of Chicago Department of Aviation Page 12 Printed 10/13/2008

14 Quarterly Noise Complaint Report July 2008 through September 2008 Quarterly Hotline Calls by Community¹ Source: Airport Noise Management System (ANMS) Total Number Community Calls of Callers Total Calls Chicago Cicero 1 1 Dolton 18 1 Downers Grove 19 1 Westmont rd Quarter 2008 Total rd Quarter 2007 Total Nature of Hotline Call Noise Complaint Source: Airport Noise Management System (ANMS) \ Nature of Complaint Total Percent Calls Low Flying 3 4% Frequency of Operations 0 0% Vibration 0 0% Not Reported 70 96% Total 73 Not Reported Vibration Frequency of Operation Low Flying 1 Complaint calls made within the State of Illinois. City of Chicago Department of Aviation Page 13 Printed 10/13/2008

15 Monthly Noise Complaint Report July 2008 through September 2008 Location of Monthly Hotline Calls Legend Location of Noise Complaint City of Chicago Department of Aviation Page 14 Printed 10/13/2008

16 Periodic Site Noise Report (Aircraft DNL) Period: July 1, 2008 through September 30, Cicero Aircraft DNL Noise Levels DNL Noise Levels Jul 8-Jul 15-Jul 22-Jul 29-Jul 5-Aug 12-Aug 19-Aug 26-Aug 2-Sep 9-Sep 16-Sep 23-Sep 30-Sep City of Chicago Department of Aviation Page 15 Printed 10/13/2008

17 Periodic Site Noise Report (Aircraft DNL) Period: July 1, 2008 through September 30, Chicago Aircraft DNL Noise Levels DNL Noise Levels Jul 8-Jul 15-Jul 22-Jul 29-Jul 5-Aug 12-Aug 19-Aug 26-Aug 2-Sep 9-Sep 16-Sep 23-Sep 30-Sep City of Chicago Department of Aviation Page 16 Printed 10/13/2008

18 Periodic Site Noise Report (Aircraft DNL) Period: July 1, 2008 through September 30, Chicago Aircraft DNL Noise Levels DNL Noise Levels Jul 8-Jul 15-Jul 22-Jul 29-Jul 5-Aug 12-Aug 19-Aug 26-Aug 2-Sep 9-Sep 16-Sep 23-Sep 30-Sep City of Chicago Department of Aviation Page 17 Printed 10/13/2008

19 Periodic Site Noise Report (Aircraft DNL) Period: July 1, 2008 through September 30, Chicago Aircraft DNL Noise Levels DNL Noise Levels Jul 8-Jul 15-Jul 22-Jul 29-Jul 5-Aug 12-Aug 19-Aug 26-Aug 2-Sep 9-Sep 16-Sep 23-Sep 30-Sep City of Chicago Department of Aviation Page 18 Printed 10/13/2008

20 Periodic Site Noise Report (Aircraft DNL) Period: July 1, 2008 through September 30, Chicago Aircraft DNL Noise Levels DNL Noise Levels Jul 8-Jul 15-Jul 22-Jul 29-Jul 5-Aug 12-Aug 19-Aug 26-Aug 2-Sep 9-Sep 16-Sep 23-Sep 30-Sep City of Chicago Department of Aviation Page 19 Printed 10/13/2008

21 Periodic Site Noise Report (Aircraft DNL) Period: July 1, 2008 through September 30, Chicago Aircraft DNL Noise Levels DNL Noise Levels Jul 8-Jul 15-Jul 22-Jul 29-Jul 5-Aug 12-Aug 19-Aug 26-Aug 2-Sep 9-Sep 16-Sep 23-Sep 30-Sep City of Chicago Department of Aviation Page 20 Printed 10/13/2008

22 Periodic Site Noise Report (Aircraft DNL) Period: July 1, 2008 through September 30, Chicago Aircraft DNL Noise Levels DNL Noise Levels Jul 8-Jul 15-Jul 22-Jul 29-Jul 5-Aug 12-Aug 19-Aug 26-Aug 2-Sep 9-Sep 16-Sep 23-Sep 30-Sep City of Chicago Department of Aviation Page 21 Printed 10/13/2008

23 Periodic Site Noise Report (Aircraft DNL) Period: July 1, 2008 through September 30, Burbank Aircraft DNL Noise Levels DNL Noise Levels Jul 8-Jul 15-Jul 22-Jul 29-Jul 5-Aug 12-Aug 19-Aug 26-Aug 2-Sep 9-Sep 16-Sep 23-Sep 30-Sep City of Chicago Department of Aviation Page 22 Printed 10/13/2008

24 Periodic Site Noise Report (Aircraft DNL) Period: July 1, 2008 through September 30, Bridgeview Aircraft DNL Noise Levels DNL Noise Levels Jul 8-Jul 15-Jul 22-Jul 29-Jul 5-Aug 12-Aug 19-Aug 26-Aug 2-Sep 9-Sep 16-Sep 23-Sep 30-Sep City of Chicago Department of Aviation Page 23 Printed 10/13/2008

25 Periodic Site Noise Report (Aircraft DNL) Period: July 1, 2008 through September 30, Summit Aircraft DNL Noise Levels DNL Noise Levels Jul 8-Jul 15-Jul 22-Jul 29-Jul 5-Aug 12-Aug 19-Aug 26-Aug 2-Sep 9-Sep 16-Sep 23-Sep 30-Sep City of Chicago Department of Aviation Page 24 Printed 10/13/2008

26 Periodic Site Noise Report (Aircraft DNL) Period: July 1, 2008 through September 30, Stickney Aircraft DNL Noise Levels DNL Noise Levels Jul 8-Jul 15-Jul 22-Jul 29-Jul 5-Aug 12-Aug 19-Aug 26-Aug 2-Sep 9-Sep 16-Sep 23-Sep 30-Sep City of Chicago Department of Aviation Page 25 Printed 10/13/2008

27 Periodic Site Noise Report (Aircraft DNL) Period: July 1, 2008 through September 30, Chicago Aircraft DNL Noise Levels DNL Noise Levels Jul 8-Jul 15-Jul 22-Jul 29-Jul 5-Aug 12-Aug 19-Aug 26-Aug 2-Sep 9-Sep 16-Sep 23-Sep 30-Sep City of Chicago Department of Aviation Page 26 Printed 10/13/2008

28 Quarterly Noise Event Histogram Report July 1, 2008 through September 30, Cicero and Chicago Cicero Average Monthly Measured Aircraft Noise Events Chicago Average Monthly Measured Aircraft Noise Events Number of Events SEL Noise Level Number of Events SEL Noise Level City of Chicago Department of Aviation Page 27 Printed 10/13/2008

29 Quarterly Noise Event Histogram Report July 1, 2008 through September 30, 2008 Chicago -303 and Chicago Chicago -303 Average Monthly Measured Aircraft Noise Events Chicago Average Monthly Measured Aircraft Noise Events Number of Events SEL Noise Level Number of Events SEL Noise Level City of Chicago Department of Aviation Page 28 Printed 10/13/2008

30 Quarterly Noise Event Histogram Report July 1, 2008 through September 30, Chicago and Chicago Chicago Average Monthly Measured Aircraft Noise Events Chicago Average Monthly Measured Aircraft Noise Events Number of Events SEL Noise Level Number of Events SEL Noise Level City of Chicago Department of Aviation Page 29 Printed 10/13/2008

31 Quarterly Noise Event Histogram Report July 1, 2008 through September 30, Chicago and Burbank Chicago Average Monthly Measured Aircraft Noise Events Burbank Average Monthly Measured Aircraft Noise Events Number of Events SEL Noise Level Number of Events SEL Noise Level City of Chicago Department of Aviation Page 30 Printed 10/13/2008

32 Quarterly Noise Event Histogram Report July 1, 2008 through September 30, Bridgeview and Summit Bridgeview Average Monthly Measured Aircraft Noise Events Summit Average Monthly Measured Aircraft Noise Events Number of Events SEL Noise Level Number of Events SEL Noise Level City of Chicago Department of Aviation Page 31 Printed 10/13/2008

33 Quarterly Noise Event Histogram Report July 1, 2008 through September 30, Stickney and Chicago Stickney Average Monthly Measured Aircraft Noise Events Chicago Average Monthly Measured Aircraft Noise Events Number of Events SEL Noise Level Number of Events SEL Noise Level City of Chicago Department of Aviation Page 32 Printed 10/13/2008