Airport Noise Management System Chicago Midway International Airport

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1 4 th Quarter 2018 Quarterly Report Airport Noise Management System Visit the Midway Noise webpage on the Internet at

2 Airport Noise Management System Quarterly Report Report Descriptions Background Installed in 1996, the Airport Noise Management System (ANMS) enables the City of 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 13 noise monitors around Midway, Federal Aviation Administration (FAA) radar data, weather data, and noise complaints. Over 150,000 flights and 400,000 noise events are recorded by the ANMS each month for the Department of Aviation (CDA). The City of and the Midway Noise Compatibility Commission (MNCC) utilize data from the ANMS to facilitate the development and management of noise abatement programs at the Airport. The following reports summarize pertinent quarterly information from that data concerning the noise levels and operations at the Airport. Wind Summary Wind is a key factor influencing runway use and operation. Aircraft performance requirements make it necessary for aircraft to take off and land into the wind for safety purposes. Ideally, aircraft should take off and land into the wind as the increased airflow over the wings provides improved lift. The diagram to the right summarizes the percent of wind occurrences by direction based on hourly data from the KMDW Automated Surface Observing System (ASOS), which is a joint effort of multiple government agencies. Aircraft Operations Summary The chart below illustrates the trend in monthly aircraft operations at Midway. Total monthly operations are based on the FAA s Air Traffic Activity Data System (ATADS). Aircraft Operations by Month Month January 17,629 18,172 18,600 18,038 17,901 15,925 18,015 18,269 17,943 17,772 February 16,385 16,446 16,384 17,720 16,297 16,080 15,890 17,229 16,660 15,320 March 20,171 20,482 21,081 20,927 20,249 20,519 20,551 20,070 20,054 20,025 April 20,052 21,141 21,019 21,288 21,242 21,030 21,419 20,910 20,653 20,593 May 21,740 21,783 22,892 22,053 22,542 22,050 22,550 22,377 22,376 21,936 June 21,545 22,175 23,194 22,104 22,950 22,993 23,400 23,320 23,261 22,090 July 22,515 21,889 23,491 22,854 23,524 23,555 24,349 22,974 23,043 22,088 August 21,587 21,335 23,222 22,165 22,940 22,608 22,836 22,577 23,213 21,929 September 21,221 20,986 21,504 21,547 21,986 21,658 22,234 22,325 21,494 20,781 October 21,776 21,804 22,740 22,432 22,506 22,376 22,863 22,827 22,231 21,770 November 20,487 20,397 20,941 19,808 20,183 20,293 20,252 21,009 20,896 19,811 December 19,702 18,923 20,159 18,977 19,806 20,165 19,160 19,159 19, Total 244, , , , , , , , , , Data not available at time of printing. Department of Aviation Page 1 4th Quarter 2018

3 Airline and Aircraft Fleet Mix Reports The Airline Fleet Mix Report summarizes the number of operations by airline operating at Midway. The report is summarized in four ways: operations for each airline during all hours of the day; operations for each airline during the nighttime hours (10 p.m. to 7 a.m.); percent of total operations for each airline during all hours of the day and percent of total operations during the nighttime hours. This report displays the average operations at Midway International Airport during the calendar quarter indicated. The Aircraft Fleet Mix Report summarizes the frequency and type of aircraft operating at Midway. 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 (10 p.m. to 7 a.m.); percent of total fleet mix for each aircraft type during all hours of the day; and percent of total fleet mix by aircraft type during the nighttime hours. This report displays the average fleet mix at Midway during the calendar quarter indicated. In 1990, Congress passed the Airport Noise and Capacity Act (ANCA) to create a more comprehensive method for regulating aircraft noise. ANCA tasked the FAA with establishing a national noise policy, as well as substituted advances in quiet engine technology for restrictions on airport operations. These aircraft noise standards are codified in FAA Part 36 regulations, Noise Standards: Aircraft Type and Airworthiness Certification. Aircraft must meet Part 36 standards to receive type or airworthiness certificates to operate in the United States. There are five stages of noise standards for aircraft: Stage 1, Stage 2, Stage 3, Stage 4, and Stage 5. Currently, all aircraft operating at Midway and within the United States are Stage 3 or 4. These aircraft, such as the Airbus A320 and new 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. More than 99% of the operations at Midway are originally certified as Stage 3 aircraft. Stage 5 noise standards will apply to new aircraft designed, manufactured, and certificated after December 31, Runway Use Report Midway has five runways that are utilized at different times depending primarily upon the prevailing wind conditions on the airfield, as well as any runway maintenance. The Runway Use Report presents the average number of daily operations on each runway, the percentage of use for each runway and a 12-month average. 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 during each month of the quarter. Percentage is a ratio whereas a percentage point (pp) is the difference between two percentages. Departures Arrivals Most used departure runway: 31C 45% Most used arrival runway: 31C 43% 31C departures increased 12pp from 3Q C arrivals increased 22pp from 3Q L and 04R departures decreased 18pp from 3Q L and 04R arrivals decreased 24pp from 3Q 2018 Aircraft Noise Report The Aircraft Noise Report summarizes aircraft noise measurements from each of the 13 noise monitors located around the Airport. The data presented summarizes the Day-Night Average Sound Levels (DNL). DNL is a 24-hour time-averaged sound exposure level with a 10 decibel (db) nighttime (10 p.m. to 7 a.m.) weighting to account for the lower background noise levels during the nighttime hours. The data display the measured aircraft DNL for each quarter and a comparison to the same quarter of the previous year, and compare the current quarter to the 12-month average. The aircraft noise report identifies noise from the existing aircraft operations at Midway. The aircraft noise levels for each monitor vary from month to month. This is primarily due to runways being utilized differently under changing wind conditions. Department of Aviation Page 2 4th Quarter 2018

4 Noise Complaint Report The CDA maintains a toll-free noise hotline ( ) and an online service at for citizens to express their concern about particular aircraft events or aircraft noise levels in general. On December 19, 2018, the City of launched a new software platform for service requests of all types, including aircraft noise complaints. This new platform includes multiple methods to submit a complaint including phone, Internet and the free CHI 311 mobile app. The 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 graphs illustrate the nature of complaints during the specified quarter. Also shown are complaints by month displaying seasonal trends. The chart below illustrates the trend in monthly complaints. These totals only include complaints made within the State of Illinois to the Midway Noise Hotline toll-free telephone number or online service. Complaints by Month 1 Month January ,809 8,922 4,357 February ,570 8,443 1,124 March ,340 9,324 13,559 2,717 April ,658 11,036 15,128 1,658 May ,250 9,989 17,399 1,087 June ,615 11, July ,135 13, August ,922 7,693 10, September ,828 12,392 11, October ,720 11,198 10,807 1,304 November ,177 6,824 9,052 1,223 December ,899 5,570 6, Total ,281 4,738 28, , ,612 16,052 Note 1: In February 2015, a citizen group created a software script to register aircraft noise complaints via the City of s 311 site. In January 2018 the City of implemented a captcha to improve the performance of its 311 system by reducing the number of non-human submissions. Note 2: Data includes complaints submitted only December 1 through December 18, Complaints for December 19 through December 31, 2018 are not included due to migration to the new 311 software platform. Department of Aviation Page 3 4th Quarter 2018

5 Runway Use Report Period: October 2018 Time of Day: All Hours Runway Utilization (All Hours) Source: Airport Noise Management System (ANMS) Runway Utilization (All Hours) NE SE SW NW Average Daily Departures October Month Average Average Daily Arrivals October Month Average Departures (All Hours) 90% 80% 70% 60% 50% 40% 30% 20% 10% Arrivals (All Hours) 90% 80% 70% 60% 50% 40% 30% 20% 10% 0% 0% Percentage Departure Utilization Percentage Arrival Utilization Department of Aviation Page 4 4th Quarter 2018

6 Runway Use Report Period: November 2018 Time of Day: All Hours Runway Utilization (All Hours) Source: Airport Noise Management System (ANMS) Runway Utilization (All Hours) NE SE SW NW Average Daily Departures November Month Average Average Daily Arrivals November Month Average Departures (All Hours) 90% 80% 70% 60% 50% 40% 30% 20% 10% Arrivals (All Hours) 90% 80% 70% 60% 50% 40% 30% 20% 10% 0% 0% Percentage Departure Utilization Percentage Arrival Utilization Department of Aviation Page 5 4th Quarter 2018

7 Runway Use Report Period: December 2018 Time of Day: All Hours Runway Utilization (All Hours) Source: Airport Noise Management System (ANMS) Runway Utilization (All Hours) NE SE SW NW Average Daily Departures December Month Average Average Daily Arrivals December Month Average Departures (All Hours) 90% 80% 70% 60% 50% 40% 30% 20% 10% Arrivals (All Hours) 90% 80% 70% 60% 50% 40% 30% 20% 10% 0% 0% Percentage Departure Utilization Percentage Arrival Utilization Department of Aviation Page 6 4th Quarter 2018

8 Airline and Aircraft Fleet Mix Report Period: 4 th Quarter 2018 Airline Average Average 4 th Quarter 2017 Operations Operations Percent Percent Average Average Per Day Per Night of Total of Total Operations Operations (All Hours) (10 p.m.-7 a.m.) (All Hours) (10 p.m.-7 a.m.) Per Day Per Night DAL % 4% 27 4 POE 9 0 1% 0% 10 0 VTE 2 0 0% 0% 2 0 SWA % 82% VOI 7 0 1% 0% 6 0 General Aviation % 14% Total % 12% Aircraft Average Average 4 th Quarter 2017 Operations Operations Percent Percent Average Average Per Day Per Night of Total of Total Operations Operations (All Hours) (10 p.m.-7 a.m.) (All Hours) (10 p.m.-7 a.m.) Per Day Per Night A % 3% 10 2 B % 0% 8 0 B % 82% B % 0% 1 0 CRJ % 1% 13 2 DH % 0% 10 0 E135/E % 0% 0 0 E % 0% 0 0 J % 0% J % 0% 2 0 General Aviation HELO 4 0 1% 0% 4 0 General Aviation OTHER % 14% Note 1: Other represents multiple General Aviation aircraft types. Total % 12% Department of Aviation Page 7 4th Quarter 2018

9 Department of Aviation Page 8 4th Quarter 2018

10 Aircraft Noise Report Period: 4 th Quarter 2018 Time of Day: 24 Hours Metric: Aircraft DNL RMT # Community Monthly Noise Levels Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Q 2018 Quarterly Noise Levels 2Q Q Q Q Month Avg Cicero /2 S. 58th Ct /2 S. Kenneth Ave /2 W. 65th St /2 W. 64th St S. Newland Ave /2 S. Menard Ave /2 W. 76th Place Burbank /2 Lockwood Ave. Bridgeview /2 S. Oketo Ave. Summit 7517 W. 61st St. Stickney 4308 Wenonah Ave /2 S. Homan Ave S. Albany Ave Data unavailable n/a - Not Applicable DNL is a 24-hour time-averaged sound exposure level with a 10 decibel (db) nighttime (10 p.m. to 7 a.m.) weighting to account for the lower background noise levels during the nighttime hours. Red represents an increase of 1 db or more from the same quarter of the previous year (0 monitors). Green represents a decrease of 1dB or more from same quarter previous year (6 monitors). Department of Aviation Page 9 4th Quarter 2018

11 Noise Complaint Report Period: 4 th Quarter 2018 Quarterly Hotline Complaints by Community 1 All Hours Community Total Complaints Number of Complainants Alsip 14 1 All Hours Brookfield 1 1 Burbank Dolton 1 1 Downers Grove 3 2 Frankfort Geneva Hinsdale 3 1 Indian Head Park Justice 1,599 1 La Grange Park 9 3 Palos Park Riverside 24 5 Summit 1 1 Western Springs 3 2 Nature of Hotline Noise Complaints Aircraft Noise 74% Low Flying 13% Vibration 2% Frequency of Operations 11% 4Q , Q , Nighttime - 10:00 p.m. - 7:00 a.m. Quarterly Hotline Complaints by Community 1 Nighttime - 10:00 p.m. - 7:00 a.m. Low Flying 8% Vibration 4% Community Total Complaints Number of Complainants Alsip 14 1 Burbank Frankfort 3 1 Hinsdale 1 1 Indian Head Park Justice La Grange Park 2 2 Palos Park Q Q Aircraft Noise 77% Method of Noise Complaint Phone 0.4% Internet 99.6% Total 100% Frequency of Operations 11% Notes: 1. Complaints made within the State of Illinois. 2. Data includes complaints submitted only December 1 through December 18, Complaints for December 19 through December 31, 2018 are not included due to migration to the new 311 software platform. Department of Aviation Page 10 4th Quarter 2018

12 Noise Complaint Map Period: 4th Quarter complainant location Department of Aviation Page 11 4th Quarter 2018

13 Midway Noise Hotline: