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Interim Fly Quiet Runway Rotation Final Report November 3, 2019 – January 31, 2021

Fly Quiet Program Chicago O’Hare International Airport

Visit the O’Hare Noise Webpage on the Internet at www.flychicago.com/oharenoise TABLE OF CONTENTS

SUMMARY Fly Quiet Mode ...... page 2 Figure 1: IFQ Average Daily Fly Quiet Start and Stop Times ...... page 2 Figure 2: IFQ Average Operations by Hour ...... page 3 Interim Fly Quiet Runway Configurations ...... page 3 Figure 3: Interim Fly Quiet Configurations ...... page 3 Designated Runways ...... page 4 Figure 4: IFQ Average Runway Configuration Usage ...... page 4 Runway Utilization ...... page 5 Figure 5: IFQ Average Runway Utilization ...... page 5 Wind Summary ...... page 6 Figure 6: Percent of Wind Occurrences During IFQ ...... page 6 Wide-Body Aircraft ...... page 7 Figure 7: IFQ Wide-Body Operations Occurring on Runways Less Than 10,000’ ...... page 7 REPORTS Interim Fly Quiet Summary ...... page 8 Interim Fly Quiet Daily Log ...... page 9 Nighttime Weekly Wind Summary ...... page 16 Runway Use Report: Fly Quiet Mode...... page 20 Summary: Fly Quiet Mode ...... page 21 Aircraft Fleet Mix Report: Fly Quiet Mode ...... page 23

SUMMARY

On September 18, 2015, the O’Hare Noise Compatibility Commission (ONCC) formed an ad hoc Fly Quiet Committee (Committee) to review, modify and make recommendations regarding nighttime noise abatement procedures at O’Hare International Airport (O’Hare). The Committee was formed as a result of the Chicago Department of Aviation’s (CDA) Noise Recommendations modifying the Fly Quiet Program and was made a standing Committee on June 19, 2018. The Committee has since completed three Fly Quiet Rotation Tests, each of which were approved by the FAA. The purpose of the tests was to collect data on various Fly Quiet runway configurations to provide near-term noise relief and reduce noise impacts to communities surrounding O’Hare. More information on the Fly Quiet Runway Rotation Tests can be found on the CDA’s website at www.flychicago.com/oharenoise.

Following the completion of the tests, and with extensive coordination by the CDA and ONCC with the public, and the FAA, the CDA developed a new temporary program called the Interim Fly Quiet Runway Rotation Program (IFQ). The goal of the IFQ is to: 1. Provide Near-Term Relief 2. Reduce Impacts to the Highest Impacted Communities – Provide Relief to Significantly Impacted Communities 3. Provide Predictability – Publish a rotation schedule that allows citizens to predict periods of relief to the extent possible

The IFQ took place from November 2019 through the end of January 2021. Significant runway construction and pavement rehabilitation on Runways 4L-22R and 4R-22L impacted the IFQ schedule during the 2019 and 2020 construction seasons, respectively. As a result, the IFQ schedule was modified to accommodate these closures. The IFQ program ran for a total of 48 weeks between November 3, 2019 through January 31, 2021 with a break during the summer months of 2020 for construction. In calendar year 2020, O’Hare experienced a significant decrease in operation levels due to the COVID-19 pandemic which effected the quantity and type of aircraft that operated during IFQ. The following summarizes the results of the IFQ.

The IFQ followed a 48-week schedule and included six (6) designated Fly Quiet Runway Configurations that were rotated on a weekly basis with the intention to balance the overnight noise. Primary and Secondary Runway Configurations were designated for each week of the IFQ to accommodate weather changes. Each new week began on Sunday evening at 10 p.m. or later, during Fly Quiet Mode when demand allowed for one designated arrival runway and one designated departure runway.

For each week of the IFQ, the Start and Stop times of Fly Quiet Mode, as well as various conditions such as runway safety inspections, maintenance, inclement weather, and alternate runway requests, were recorded and reported on the CDA’s website.

During IFQ, 47 percent of the aircraft operations that occurred during Fly Quiet Mode utilized the designated IFQ runways. Each night during Fly Quiet Mode, there was an average of 82 operations, 39 of which operated on designated runways. Please refer to the following sections for additional details.

Chicago Department of Aviation Page 1 April 2021 FLY QUIET MODE

The FAA considers nighttime hours as 10:00 p.m. - 07:00 a.m. as defined in Airport Noise Compatibility Planning (14 CFR Part 150). It is the CDA’s goal for the Fly Quiet Program to occur during the entire nine-hour nighttime period of 10:00 p.m. to 7:00 a.m., however due to operational demand by the airlines and traveling public, Fly Quiet is typically limited to a period less than nine hours. Fly Quiet Mode, the period of time in Fly Quiet, starts each night on or after 10:00 p.m., once demand allows for two departure runways and one arrival runway and allows for the preferential flight tracks as outlined in the CDA’s Fly Quiet Manual. Demand for the majority of the night allows for one arrival runway and one departure runway. Once demand increases in the morning where additional runways are needed and preferential flight tracks can no longer be utilized, Fly Quiet Mode stops.

There were thirty-one (31) nights during IFQ where Fly Quiet Mode lasted the entire nine-hour nighttime period from 10:00 p.m. to 7:00 a.m. (see IFQ Summary Reports for more details).

FIGURE 1 IFQ AVERAGE DAILY FLY QUIET MODE START AND STOP TIMES

Figure 1 shows the daily Fly Quiet Mode Start and Stop times for every night of the IFQ. The average daily Fly Quiet Mode Start Time was 10:32 p.m. and the average daily Fly Quiet Mode Stop Time was 6:16 a.m., for an average of seven (7) hours and forty-four (44) minutes each night. The Fly Quiet Mode Start and Stop times are triggered by runway demand. As shown in Figure 2, the departure demand before 10:32 p.m. prevents Fly Quiet Mode from beginning any earlier. If that departure demand is delayed for any reason, the start of Fly Quiet Mode is also delayed. Similarly, the large arrival demand before 7 a.m. caused Fly Quiet Mode to typically end at 6:16 a.m. If this arrival demand is delayed, Fly Quiet Mode may continue longer into the morning hours.

Chicago Department of Aviation Page 2 April 2021 FIGURE 2 IFQ AVERAGE OPERATIONS BY HOUR

INTERIM FLY QUIET RUNWAY CONFIGURATIONS

Six (6) IFQ Runway Configurations were developed and scheduled for a total of forty-eight (48)-weeks as shown in Figure 3.

FIGURE 3 INTERIM FLY QUIET CONFIGURATIONS

Chicago Department of Aviation Page 3 April 2021 DESIGNATED RUNWAYS

During IFQ, 47 percent of the operations that occurred during Fly Quiet Mode utilized the designated runways. Figure 4 ranks the order of the IFQ Configuration usage, from highest to lowest.

FIGURE 4 IFQ AVERAGE RUNWAY CONFIGURATION USAGE

Each night (10:00 p.m. to 7:00 a.m.) there was an average of 160 operations. During IFQ 47 percent of the aircraft operations that occurred during the Fly Quiet Mode utilized the designated rotation runways. Each night there was an average of 82 operations, 39 of which operated on designated runways. The remaining 53 percent of the operations did not utilize the designated runways due to the following reasons:

Note 1: Operations that occurred on runways other than those designated due to Runway Safety Inspections and/or Aircraft Requirements. Note 2: A designated area of an airport where aircraft, vehicles, persons or physical obstructions must remain clear of when one or more Instrument Landing Systems (ILS) are in use, to protect against signal interference.

Chicago Department of Aviation Page 4 April 2021 RUNWAY UTILIZATION

IFQ was designed to balance the runway utilization during Fly Quiet Mode. The IFQ schedule included alternating weeks of utilizing parallel and diagonal runways and included an equal number of East and West Flow weeks. Every week had a secondary configuration to accommodate opposite wind flow but remained on runways similar to the primary configuration. The average operations for Fly Quiet Mode are broken out as follows:

Total Average Arrivals 16,790 Arrivals 51 Departures 10,438 Departures 31 Operations 27,228 Operations 82

Figure 5 displays proportional boxes in size for each runway operation, representative of the average throughout the IFQ. The lighter boxes represent West Flow operations and the darker boxes represent East Flow operations.

FIGURE 5 IFQ AVERAGE RUNWAY UTILIZATION

Chicago Department of Aviation Page 5 April 2021 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. Figure 6 summarizes the percent of wind occurrences by direction during IFQ based on hourly data from the KORD Automated Surface Observing System (ASOS), which is a joint effort of multiple government agencies.

FIGURE 6 PERCENT OF WIND OCCURRENCES DURING IFQ

Chicago Department of Aviation Page 6 April 2021 WIDE-BODY AIRCRAFT

Many wide-body aircraft operating during the nighttime hours at O’Hare are cargo aircraft with large payloads. As a result of the COVID-19 pandemic during calendar year 2020, the percentage of wide-body cargo aircraft increased due to increases in cargo demand as well as a substantial decrease in passenger demand. The typical wide-body aircraft that operate at O’Hare are the Boeing 767, Boeing 777, Boeing 747, and McDonnell Douglas DC-10. These aircraft are occasionally louder and can climb at a slower rate that may cause significant noise complaints. Wide-body aircraft typically utilized the following two longest runways at O’Hare:

1. Runway 10L/28R 13,000 feet long 2. Runway 10C/28C 10,801 feet long 3. Runway 9C/27C1 11,245 feet long

Wide-body operations on Runways 10L-28R and 10C-28C heavily impact the communities of Bensenville and Schiller Park. While the IFQ did not prevent these operations from occurring on these runways, it recommended that airlines specifically request these longer runways if they were not the designated runways for that night. During the IFQ, the CDA asked airlines to request specific runways two hours in advance if a specific runway was needed for operational considerations. All requests were granted during the IFQ unless that specific runway was closed for maintenance. Due to specific FAA request, either Runway 10L-28R or Runway 10C-28C was left open every night of IFQ for safety reasons. IFQ results showed that 10% of wide-body operations (an average of 3 operations per night) were conducted on runways with lengths of less than 10,000 feet, which provided relief of nighttime noise to the communities impacted by Runways 10L-28R and 10C-28C operations.

FIGURE 7 IFQ WIDE-BODY OPERATIONS OCCURRING ON RUNWAYS LESS THAN 10,000’

9L 27R

22R 10% 9C 27C

9R 27L 4L

10L 28R 22L 10C 28C

10R 28L

4R

1 Runway 9C-27C was commissioned on November 5, 2020, however, it was not included in the IFQ Runway Configurations and was not utilized for nighttime operations until after IFQ was complete.

Chicago Department of Aviation Page 7 April 2021 INTERIM FLY QUIET SUMMARY NOVEMBER 3, 2019 - JANUARY 31, 2021 48 WEEK AVERAGE

10:32 PM 6:16 AM START STOP

10 PM 11 PM 12 AM 1 AM 2 AM 3 AM 4 AM 5 AM 6 AM 7 AM AVERAGE 100% • CDA Runway Safety Inspections • Parked Aircraft in the Critical Areas (Required for Safety) • Radar Data Unavailable 80% • CDA Construction • Rubber Removal • Disabled Aircraft • Runway Equipment Maintenance 60% • FAA Flight Checks • Runway Requests • Inclement Weather 40% OF OPERATIONS UTILIZING 20% 47% DESIGNATED RUNWAYS Operations During Fly Quiet = 82 0%

Time In Fly Quiet – 7:44

Note: Values above represent the average for time period. www.flychicago.com/oharenoise

Chicago Department of Aviation Page 8 April 2021 Interim Fly Quiet Daily Log (1 of 7) Chicago O'Hare International Airport Period: November 3, 2019 through January 31, 2021 Fly Quiet Mode

Fly Quiet Mode1 Time Runway Rotation Adherence

Duration Percentage of Primary Secondary Start Stop Operations4 (hrs: mins) Nighttime2 Configuration3 Configuration3 11/3/19 - 10:34 PM 11/4/19 - 05:36 AM 7:02 78% 0% 66% 96 11/4/19 - 10:21 PM 11/5/19 - 05:42 AM 7:21 82% 0% 82% 110 11/5/19 - 10:39 PM 11/6/19 - 05:55 AM 7:16 81% 0% 39% 106 11/6/19 - 11:23 PM 11/7/19 - 03:11 AM 3:48 42% 66% 10% 58 11/7/19 - 10:46 PM 11/8/19 - 05:47 AM 7:01 78% 0% 79% 92 11/8/19 - 10:43 PM 11/9/19 - 05:39 AM 6:56 77% 0% 42% 90 11/9/19 - 10:06 PM 11/10/19 - 05:47 AM 7:41 85% 0% 73% 112 11/10/19 - 10:43 PM 11/11/19 - 06:11 AM 7:28 83% 0% 0% 85 11/12/19 - 12:34 AM 11/12/19 - 05:47 AM 5:13 58% 0% 2% 123 11/12/19 - 10:48 PM 11/13/19 - 06:01 AM 7:13 80% 0% 37% 116 11/13/19 - 11:51 PM 11/14/19 - 05:54 AM 6:03 67% 0% 31% 80 11/14/19 - 11:13 PM 11/15/19 - 05:42 AM 6:29 72% 0% 75% 80 11/15/19 - 11:05 PM 11/16/19 - 05:51 AM 6:46 75% 75% 1% 89 11/16/19 - 10:10 PM 11/17/19 - 05:59 AM 7:49 87% 0% 70% 113 11/17/19 - 10:47 PM 11/18/19 - 05:53 AM 7:06 79% 0% 77% 104 11/18/19 - 10:31 PM 11/19/19 - 05:47 AM 7:16 81% 0% 97% 111 11/19/19 - 10:32 PM 11/20/19 - 05:51 AM 7:19 81% 0% 96% 110 11/20/19 - 11:19 PM 11/21/19 - 05:21 AM 6:02 67% 51% 38% 79 11/21/19 - 10:52 PM 11/22/19 - 05:36 AM 6:44 75% 0% 95% 96 11/22/19 - 10:39 PM 11/23/19 - 05:54 AM 7:15 81% 36% 57% 114 11/23/19 - 11:38 PM 11/24/19 - 05:51 AM 6:13 69% 0% 21% 66 11/24/19 - 11:19 PM 11/25/19 - 05:23 AM 6:04 67% 0% 72% 69 11/25/19 - 10:49 PM 11/26/19 - 05:38 AM 6:49 76% 0% 72% 90 11/26/19 - 11:00 PM 11/27/19 - 05:46 AM 6:46 75% 0% 26% 94 11/27/19 - 11:47 PM 11/28/19 - 05:38 AM 5:51 65% 0% 3% 66 11/28/19 - 10:15 PM 11/29/19 - 06:44 AM 8:29 94% 60% 0% 78 11/29/19 - 10:18 PM 11/30/19 - 05:44 AM 7:26 83% 31% 1% 89 12/1/19 - 01:20 AM 12/1/19 - 06:15 AM 4:55 55% 7% 4% 107 12/2/19 - 01:41 AM 12/2/19 - 05:41 AM 4:00 45% 22% 0% 67 12/2/19 - 11:20 PM 12/3/19 - 05:46 AM 6:26 71% 3% 0% 101 12/3/19 - 10:03 PM 12/4/19 - 05:44 AM 7:41 85% 4% 0% 151 12/4/19 - 10:00 PM 12/5/19 - 05:42 AM 7:42 86% 84% 0% 140 12/5/19 - 10:00 PM 12/6/19 - 05:45 AM 7:45 86% 82% 0% 140 12/6/19 - 10:34 PM 12/7/19 - 05:41 AM 7:07 79% 23% 47% 86 12/7/19 - 10:08 PM 12/8/19 - 05:27 AM 7:19 81% 53% 0% 80 12/8/19 - 10:36 PM 12/9/19 - 05:36 AM 7:00 78% 32% 0% 81 12/9/19 - 11:00 PM 12/10/19 - 05:47 AM 6:47 75% 51% 0% 91 12/10/19 - 10:36 PM 12/11/19 - 05:50 AM 7:14 80% 33% 0% 92 12/11/19 - 10:41 PM 12/12/19 - 06:06 AM 7:25 82% 0% 0% 105 12/13/19 - 12:17 AM 12/13/19 - 05:48 AM 5:31 61% 2% 0% 51 12/13/19 - 10:36 PM 12/14/19 - 05:43 AM 7:07 79% 54% 0% 93 12/14/19 - 11:18 PM 12/15/19 - 06:22 AM 7:04 79% 40% 0% 97 12/15/19 - 11:06 PM 12/16/19 - 06:07 AM 7:01 78% 84% 0% 82 12/16/19 - 11:13 PM 12/17/19 - 05:35 AM 6:22 71% 30% 59% 76 12/17/19 - 11:16 PM 12/18/19 - 06:01 AM 6:45 75% 93% 0% 94 12/18/19 - 11:14 PM 12/19/19 - 05:34 AM 6:20 70% 91% 0% 86 12/19/19 - 10:41 PM 12/20/19 - 05:55 AM 7:14 80% 94% 0% 118 12/20/19 - 10:23 PM 12/21/19 - 05:39 AM 7:16 81% 95% 0% 125 12/21/19 - 10:43 PM 12/22/19 - 05:52 AM 7:09 79% 82% 0% 104 Chicago Department of Aviation Page 9 April 2021 Interim Fly Quiet Daily Log (2 of 7) Chicago O'Hare International Airport Period: November 3, 2019 through January 31, 2021 Fly Quiet Mode

Fly Quiet Mode1 Time Runway Rotation Adherence

Duration Percentage of Primary Secondary Start Stop Operations4 (hrs: mins) Nighttime2 Configuration3 Configuration3 12/22/19 - 10:58 PM 12/23/19 - 05:38 AM 6:40 74% 53% 0% 93 12/23/19 - 10:40 PM 12/24/19 - 05:40 AM 7:00 78% 1% 51% 103 12/24/19 - 10:00 PM 12/25/19 - 05:58 AM 7:58 89% 55% 0% 64 12/25/19 - 10:02 PM 12/26/19 - 05:36 AM 7:34 84% 33% 0% 102 12/26/19 - 11:45 PM 12/27/19 - 05:41 AM 5:56 66% 68% 0% 68 12/27/19 - 10:52 PM 12/28/19 - 05:43 AM 6:51 76% 57% 0% 90 12/28/19 - 11:43 PM 12/29/19 - 05:41 AM 5:58 66% 0% 0% 74 12/29/19 - 10:41 PM 12/30/19 - 05:56 AM 7:15 81% 0% 83% 121 --5 --5 --5 --5 --5 --5 --5 12/31/19 - 10:00 PM 1/1/20 - 05:55 AM 7:55 88% 0% 57% 77 1/1/20 - 10:13 PM 1/2/20 - 05:35 AM 7:22 82% 0% 53% 117 1/2/20 - 10:32 PM 1/3/20 - 05:34 AM 7:02 78% 0% 53% 109 1/3/20 - 10:39 PM 1/4/20 - 05:33 AM 6:54 77% 0% 47% 95 1/4/20 - 10:46 PM 1/5/20 - 05:46 AM 7:00 78% 0% 74% 108 1/5/20 - 10:54 PM 1/6/20 - 05:49 AM 6:55 77% 0% 44% 99 1/6/20 - 10:28 PM 1/7/20 - 05:50 AM 7:22 82% 0% 53% 106 1/7/20 - 10:02 PM 1/8/20 - 05:55 AM 7:53 88% 0% 7% 127 1/8/20 - 10:35 PM 1/9/20 - 05:36 AM 7:01 78% 0% 0% 107 1/9/20 - 10:58 PM 1/10/20 - 05:35 AM 6:37 74% 0% 78% 78 1/10/20 - 10:51 PM 1/11/20 - 06:08 AM 7:17 81% 9% 0% 105 1/11/20 - 11:41 PM 1/12/20 - 06:27 AM 6:46 75% 0% 5% 103 1/12/20 - 11:05 PM 1/13/20 - 06:19 AM 7:14 80% 0% 90% 129 1/13/20 - 10:47 PM 1/14/20 - 05:52 AM 7:05 79% 56% 33% 93 1/14/20 - 10:38 PM 1/15/20 - 06:10 AM 7:32 84% 45% 42% 114 1/15/20 - 11:43 PM 1/16/20 - 05:42 AM 5:59 66% 0% 86% 69 1/16/20 - 10:29 PM 1/17/20 - 06:01 AM 7:32 84% 35% 60% 112 1/18/20 - 12:17 AM 1/18/20 - 06:12 AM 5:55 66% 61% 0% 44 1/18/20 - 10:12 PM 1/19/20 - 06:08 AM 7:56 88% 0% 89% 99 1/19/20 - 10:51 PM 1/20/20 - 06:08 AM 7:17 81% 36% 3% 89 1/20/20 - 11:09 PM 1/21/20 - 05:43 AM 6:34 73% 0% 56% 72 1/21/20 - 10:08 PM 1/22/20 - 05:51 AM 7:43 86% 0% 44% 115 1/22/20 - 10:55 PM 1/23/20 - 05:58 AM 7:03 78% 0% 1% 99 1/23/20 - 11:21 PM 1/24/20 - 06:07 AM 6:46 75% 0% 2% 99 1/24/20 - 10:43 PM 1/25/20 - 05:42 AM 6:59 78% 0% 2% 93 1/25/20 - 11:17 PM 1/26/20 - 05:30 AM 6:13 69% 0% 2% 49 1/26/20 - 10:59 PM 1/27/20 - 05:42 AM 4:50 54% 33% 0% 61 1/27/20 - 10:12 PM 1/28/20 - 05:50 AM 7:38 85% 49% 0% 123 1/28/20 - 10:43 PM 1/29/20 - 06:03 AM 7:20 81% 0% 62% 97 1/29/20 - 11:06 PM 1/30/20 - 05:39 AM 6:33 73% 41% 7% 74 1/30/20 - 10:44 PM 1/31/20 - 05:41 AM 6:57 77% 61% 0% 82 --6 --6 --6 --6 --6 --6 --6 --6 --6 --6 --6 --6 --6 --6 --6 --6 --6 --6 --6 --6 --6 2/3/20 - 10:31 PM 2/4/20 - 06:01 AM 7:30 83% 0% 0% 96 2/4/20 - 10:26 PM 2/5/20 - 05:33 AM 7:07 79% 0% 60% 81 2/6/20 - 12:19 AM 2/6/20 - 06:12 AM 5:53 65% 0% 0% 73 2/7/20 - 12:52 AM 2/7/20 - 06:07 AM 5:15 58% 3% 0% 59 2/7/20 - 10:49 PM 2/8/20 - 06:07 AM 7:18 81% 49% 0% 105 2/8/20 - 10:00 PM 2/9/20 - 06:21 AM 8:21 93% 48% 0% 118 Chicago Department of Aviation Page 10 April 2021 Interim Fly Quiet Daily Log (3 of 7) Chicago O'Hare International Airport Period: November 3, 2019 through January 31, 2021 Fly Quiet Mode

Fly Quiet Mode1 Time Runway Rotation Adherence

Duration Percentage of Primary Secondary Start Stop Operations4 (hrs: mins) Nighttime2 Configuration3 Configuration3 2/9/20 - 10:51 PM 2/10/20 - 05:59 AM 7:08 79% 95% 0% 93 2/10/20 - 10:33 PM 2/11/20 - 05:51 AM 7:18 81% 57% 0% 88 2/11/20 - 10:29 PM 2/12/20 - 06:04 AM 7:35 84% 92% 0% 108 2/13/20 - 12:56 AM 2/13/20 - 06:19 AM 5:23 60% 13% 33% 63 2/13/20 - 11:59 PM 2/14/20 - 06:00 AM 6:01 67% 51% 0% 87 2/14/20 - 10:02 PM 2/15/20 - 05:51 AM 7:49 87% 77% 1% 137 2/15/20 - 10:23 PM 2/16/20 - 06:01 AM 7:38 85% 26% 0% 81 2/16/20 - 10:32 PM 2/17/20 - 06:06 AM 7:34 84% 1% 43% 102 2/17/20 - 11:16 PM 2/18/20 - 05:39 AM 6:23 71% 1% 0% 73 2/18/20 - 10:36 PM 2/19/20 - 05:43 AM 7:07 79% 50% 28% 105 2/19/20 - 10:32 PM 2/20/20 - 05:39 AM 7:07 79% 73% 0% 100 2/21/20 - 12:01 AM 2/21/20 - 05:43 AM 5:42 63% 62% 0% 63 2/21/20 - 10:30 PM 2/22/20 - 05:42 AM 7:12 80% 65% 0% 98 2/22/20 - 10:00 PM 2/23/20 - 05:52 AM 7:52 87% 36% 0% 96 2/23/20 - 10:37 PM 2/24/20 - 06:03 AM 7:26 83% 5% 36% 102 2/24/20 - 10:39 PM 2/25/20 - 05:58 AM 7:19 81% 51% 0% 88 2/25/20 - 11:24 PM 2/26/20 - 06:02 AM 6:38 74% 34% 0% 80 2/26/20 - 10:48 PM 2/27/20 - 06:17 AM 7:29 83% 0% 61% 129 2/27/20 - 10:45 PM 2/28/20 - 05:52 AM 7:07 79% 0% 62% 95 2/28/20 - 10:35 PM 2/29/20 - 05:40 AM 7:05 79% 0% 73% 93 2/29/20 - 10:17 PM 3/1/20 - 06:03 AM 7:46 86% 0% 68% 99 3/1/20 - 10:37 PM 3/2/20 - 05:32 AM 6:55 77% 0% 44% 79 3/2/20 - 10:04 PM 3/3/20 - 05:33 AM 7:29 83% 0% 39% 114 3/3/20 - 10:30 PM 3/4/20 - 05:47 AM 7:17 81% 0% 59% 102 3/4/20 - 11:19 PM 3/5/20 - 05:55 AM 6:36 73% 0% 52% 87 3/6/20 - 12:24 AM 3/6/20 - 05:51 AM 5:27 61% 0% 0% 62 3/6/20 - 10:33 PM 3/7/20 - 05:45 AM 7:12 80% 0% 70% 105 3/7/20 - 10:02 PM 3/8/20 - 05:32 AM 7:30 83% 0% 67% 87 3/8/20 - 10:22 PM 3/9/20 - 05:34 AM 7:12 80% 0% 95% 110 3/9/20 - 11:12 PM 3/10/20 - 05:42 AM 6:30 72% 0% 96% 82 3/10/20 - 10:37 PM 3/11/20 - 05:37 AM 7:00 78% 15% 16% 67 3/11/20 - 10:36 PM 3/12/20 - 05:37 AM 7:01 78% 0% 65% 113 3/12/20 - 10:47 PM 3/13/20 - 05:41 AM 6:54 77% 0% 28% 96 3/13/20 - 10:42 PM 3/14/20 - 05:31 AM 6:49 76% 5% 25% 92 3/14/20 - 10:59 PM 3/15/20 - 05:36 AM 6:37 74% 90% 0% 71 3/15/20 - 10:56 PM 3/16/20 - 05:41 AM 6:45 75% 13% 29% 85 3/16/20 - 10:51 PM 3/17/20 - 05:39 AM 6:48 76% 0% 64% 90 3/17/20 - 10:31 PM 3/18/20 - 05:46 AM 7:15 81% 0% 0% 100 3/18/20 - 10:57 PM 3/19/20 - 05:55 AM 6:58 77% 0% 0% 103 3/19/20 - 11:57 PM 3/20/20 - 05:59 AM 6:02 67% 0% 1% 77 3/20/20 - 10:31 PM 3/21/20 - 06:08 AM 7:37 85% 63% 0% 131 3/21/20 - 10:21 PM 3/22/20 - 06:12 AM 7:51 87% 62% 0% 106 3/22/20 - 11:07 PM 3/23/20 - 06:11 AM 7:04 79% 0% 22% 87 3/23/20 - 10:10 PM 3/24/20 - 06:06 AM 7:56 88% 32% 36% 115 3/24/20 - 10:09 PM 3/25/20 - 06:01 AM 7:52 87% 26% 35% 113 3/25/20 - 10:00 PM 3/26/20 - 05:22 AM 7:22 82% 37% 0% 92 3/26/20 - 10:27 PM 3/27/20 - 06:03 AM 7:36 84% 0% 70% 82 3/27/20 - 10:18 PM 3/28/20 - 06:01 AM 7:43 86% 0% 65% 65 3/28/20 - 10:00 PM 3/29/20 - 06:26 AM 8:26 94% 48% 1% 92 Chicago Department of Aviation Page 11 April 2021 Interim Fly Quiet Daily Log (4 of 7) Chicago O'Hare International Airport Period: November 3, 2019 through January 31, 2021 Fly Quiet Mode

Fly Quiet Mode1 Time Runway Rotation Adherence

Duration Percentage of Primary Secondary Start Stop Operations4 (hrs: mins) Nighttime2 Configuration3 Configuration3 3/29/20 - 10:24 PM 3/30/20 - 06:22 AM 7:58 89% 2% 0% 86 3/30/20 - 10:29 PM 3/31/20 - 06:23 AM 7:54 88% 0% 39% 89 3/31/20 - 10:31 PM 4/1/20 - 06:16 AM 7:45 86% 0% 57% 84 4/1/20 - 10:18 PM 4/2/20 - 06:45 AM 8:27 94% 1% 25% 89 4/2/20 - 10:13 PM 4/3/20 - 06:34 AM 8:21 93% 0% 46% 94 4/3/20 - 10:00 PM 4/4/20 - 06:05 AM 8:05 90% 0% 0% 57 4/4/20 - 10:25 PM 4/5/20 - 07:00 AM 8:35 95% 0% 12% 85 4/5/20 - 10:00 PM 4/6/20 - 07:00 AM 9:00 100% 22% 74% 68 4/6/20 - 10:00 PM 4/7/20 - 07:00 AM 9:00 100% 98% 0% 101 4/7/20 - 10:00 PM 4/8/20 - 07:00 AM 9:00 100% 93% 0% 91 4/8/20 - 10:09 PM 4/9/20 - 06:20 AM 8:11 91% 79% 0% 76 4/9/20 - 10:01 PM 4/10/20 - 05:45 AM 7:44 86% 94% 0% 50 4/10/20 - 10:02 PM 4/11/20 - 06:58 AM 8:56 99% 93% 0% 80 4/11/20 - 10:00 PM 4/12/20 - 05:31 AM 7:31 84% 95% 0% 41 4/12/20 - 10:39 PM 4/13/20 - 06:06 AM 7:27 83% 0% 0% 39 4/14/20 - 12:30 AM 4/14/20 - 06:41 AM 6:11 69% 0% 0% 41 4/14/20 - 11:21 PM 4/15/20 - 06:18 AM 6:57 77% 3% 0% 34 4/15/20 - 11:16 PM 4/16/20 - 06:48 AM 7:32 84% 5% 0% 66 4/16/20 - 11:31 PM 4/17/20 - 07:00 AM 7:29 83% 0% 0% 55 4/17/20 - 10:22 PM 4/18/20 - 06:08 AM 7:46 86% 3% 0% 32 4/18/20 - 10:16 PM 4/19/20 - 06:35 AM 8:19 92% 0% 0% 54 4/19/20 - 10:20 PM 4/20/20 - 06:10 AM 7:50 87% 40% 2% 48 4/20/20 - 10:32 PM 4/21/20 - 06:21 AM 7:49 87% 0% 16% 56 4/21/20 - 10:03 PM 4/22/20 - 07:00 AM 8:57 99% 9% 0% 81 4/22/20 - 10:10 PM 4/23/20 - 06:57 AM 8:47 98% 35% 0% 85 4/23/20 - 10:04 PM 4/24/20 - 06:08 AM 8:04 90% 56% 0% 52 4/24/20 - 10:00 PM 4/25/20 - 06:24 AM 8:24 93% 22% 0% 50 4/25/20 - 10:01 PM 4/26/20 - 06:51 AM 8:50 98% 40% 0% 68 4/26/20 - 10:00 PM 4/27/20 - 06:15 AM 8:15 92% 13% 7% 54 4/27/20 - 10:01 PM 4/28/20 - 06:25 AM 8:24 93% 0% 19% 68 4/28/20 - 10:26 PM 4/29/20 - 06:25 AM 7:59 89% 0% 12% 59 4/29/20 - 10:09 PM 4/30/20 - 06:53 AM 8:44 97% 0% 1% 87 4/30/20 - 10:00 PM 5/1/20 - 06:11 AM 8:11 91% 0% 2% 55 5/1/20 - 10:00 PM 5/2/20 - 06:23 AM 8:23 93% 0% 0% 60 5/2/20 - 10:00 PM 5/3/20 - 06:01 AM 8:01 89% 0% 2% 43 5/3/20 - 10:00 PM 5/4/20 - 07:00 AM 9:00 100% 81% 0% 68 5/4/20 - 10:00 PM 5/5/20 - 07:00 AM 9:00 100% 90% 0% 61 5/5/20 - 10:00 PM 5/6/20 - 07:00 AM 9:00 100% 72% 19% 54 5/6/20 - 10:00 PM 5/7/20 - 06:03 AM 8:03 89% 0% 95% 56 5/7/20 - 10:00 PM 5/8/20 - 06:05 AM 8:05 90% 84% 0% 51 5/9/20 - 01:33 AM 5/9/20 - 06:04 AM 4:31 50% 6% 63% 16 5/9/20 - 10:00 PM 5/10/20 - 06:37 AM 8:37 96% 0% 93% 45 5/10/20 - 11:14 PM 5/11/20 - 06:44 AM 7:30 83% 0% 10% 42 5/11/20 - 10:00 PM 5/12/20 - 06:45 AM 8:45 97% 0% 11% 54 5/12/20 - 10:00 PM 5/13/20 - 06:49 AM 8:49 98% 16% 2% 62 5/13/20 - 10:08 PM 5/14/20 - 06:09 AM 8:01 89% 0% 10% 52 5/14/20 - 11:46 PM 5/15/20 - 06:45 AM 6:59 78% 0% 0% 38 5/15/20 - 10:00 PM 5/16/20 - 06:51 AM 8:51 98% 21% 0% 48 5/16/20 - 10:00 PM 5/17/20 - 06:49 AM 8:49 98% 25% 0% 55 Chicago Department of Aviation Page 12 April 2021 Interim Fly Quiet Daily Log (5 of 7) Chicago O'Hare International Airport Period: November 3, 2019 through January 31, 2021 Fly Quiet Mode

Fly Quiet Mode1 Time Runway Rotation Adherence

Duration Percentage of Primary Secondary Start Stop Operations4 (hrs: mins) Nighttime2 Configuration3 Configuration3 9/13/20 - 10:00 PM 9/14/20 - 05:26 AM 7:26 83% 8% 20% 49 9/14/20 - 10:00 PM 9/15/20 - 06:40 AM 8:40 96% 3% 11% 71 9/15/20 - 10:10 PM 9/16/20 - 06:55 AM 8:45 97% 0% 56% 73 9/16/20 - 10:00 PM 9/17/20 - 06:53 AM 8:53 99% 11% 0% 89 9/17/20 - 10:05 PM 9/18/20 - 06:54 AM 8:49 98% 40% 0% 90 9/18/20 - 10:00 PM 9/19/20 - 06:55 AM 8:55 99% 38% 0% 65 9/19/20 - 10:00 PM 9/20/20 - 07:00 AM 9:00 100% 26% 0% 77 9/20/20 - 11:59 PM 9/21/20 - 06:51 AM 6:52 76% 0% 19% 48 9/21/20 - 10:00 PM 9/22/20 - 06:11 AM 8:11 91% 0% 16% 68 9/22/20 - 10:00 PM 9/23/20 - 06:29 AM 8:29 94% 0% 31% 65 9/23/20 - 10:00 PM 9/24/20 - 06:29 AM 8:29 94% 0% 26% 77 9/24/20 - 10:00 PM 9/25/20 - 06:51 AM 8:51 98% 0% 37% 89 9/25/20 - 10:00 PM 9/26/20 - 06:51 AM 8:51 98% 0% 7% 58 9/26/20 - 10:03 PM 9/27/20 - 06:49 AM 8:46 97% 0% 33% 57 9/27/20 - 10:13 PM 9/28/20 - 06:58 AM 8:45 97% 0% 89% 74 9/28/20 - 10:00 PM 9/29/20 - 06:48 AM 8:48 98% 0% 86% 84 9/29/20 - 10:02 PM 9/30/20 - 06:52 AM 8:50 98% 0% 78% 72 9/30/20 - 10:00 PM 10/1/20 - 06:55 AM 8:55 99% 0% 88% 89 10/1/20 - 10:00 PM 10/2/20 - 06:54 AM 8:54 99% 0% 88% 89 10/2/20 - 10:00 PM 10/3/20 - 06:57 AM 8:57 99% 40% 44% 82 10/3/20 - 10:00 PM 10/4/20 - 07:00 AM 9:00 100% 0% 89% 71 10/4/20 - 10:00 PM 10/5/20 - 06:47 AM 8:47 98% 0% 31% 68 10/5/20 - 10:03 PM 10/6/20 - 06:58 AM 8:55 99% 0% 22% 88 10/6/20 - 10:00 PM 10/7/20 - 07:00 AM 9:00 100% 0% 36% 76 10/7/20 - 10:00 PM 10/8/20 - 07:00 AM 9:00 100% 34% 5% 87 10/8/20 - 10:00 PM 10/9/20 - 07:00 AM 9:00 100% 47% 4% 100 10/9/20 - 10:00 PM 10/10/20 - 06:57 AM 8:57 99% 0% 31% 77 10/10/20 - 10:00 PM 10/11/20 - 07:00 AM 9:00 100% 34% 0% 67 10/11/20 - 10:00 PM 10/12/20 - 06:07 AM 8:07 90% 38% 0% 65 10/12/20 - 10:00 PM 10/13/20 - 06:50 AM 8:50 98% 32% 0% 90 10/13/20 - 10:00 PM 10/14/20 - 07:00 AM 9:00 100% 58% 0% 79 10/14/20 - 10:00 PM 10/15/20 - 07:00 AM 9:00 100% 56% 0% 84 10/15/20 - 10:00 PM 10/16/20 - 07:00 AM 9:00 100% 66% 0% 89 10/16/20 - 10:00 PM 10/17/20 - 06:49 AM 8:49 98% 56% 0% 79 10/17/20 - 10:00 PM 10/18/20 - 07:00 AM 9:00 100% 32% 0% 77 10/18/20 - 10:00 PM 10/19/20 - 07:00 AM 9:00 100% 6% 0% 86 10/19/20 - 10:00 PM 10/20/20 - 07:00 AM 9:00 100% 0% 42% 84 10/20/20 - 10:08 PM 10/21/20 - 07:00 AM 8:52 99% 0% 0% 83 10/21/20 - 10:59 PM 10/22/20 - 06:08 AM 7:09 79% 0% 4% 52 10/22/20 - 10:00 PM 10/23/20 - 06:09 AM 8:09 91% 40% 0% 84 10/23/20 - 10:00 PM 10/24/20 - 07:00 AM 9:00 100% 4% 29% 85 10/24/20 - 10:00 PM 10/25/20 - 07:00 AM 9:00 100% 0% 24% 76 10/25/20 - 10:00 PM 10/26/20 - 07:00 AM 9:00 100% 45% 42% 86 10/27/20 - 12:39 AM 10/27/20 - 07:00 AM 6:21 71% 81% 0% 54 10/27/20 - 10:00 PM 10/28/20 - 07:00 AM 9:00 100% 94% 0% 81 10/28/20 - 10:00 PM 10/29/20 - 06:59 AM 8:59 100% 66% 26% 88 10/29/20 - 10:01 PM 10/30/20 - 06:08 AM 8:07 90% 95% 0% 80 10/30/20 - 10:00 PM 10/31/20 - 07:00 AM 9:00 100% 27% 63% 70 10/31/20 - 10:00 PM 11/1/20 - 06:29 AM 8:29 94% 82% 0% 71 Chicago Department of Aviation Page 13 April 2021 Interim Fly Quiet Daily Log (6 of 7) Chicago O'Hare International Airport Period: November 3, 2019 through January 31, 2021 Fly Quiet Mode

Fly Quiet Mode1 Time Runway Rotation Adherence

Duration Percentage of Primary Secondary Start Stop Operations4 (hrs: mins) Nighttime2 Configuration3 Configuration3 11/1/20 - 10:00 PM 11/2/20 - 06:58 AM 8:58 100% 34% 0% 95 11/2/20 - 10:00 PM 11/3/20 - 07:00 AM 9:00 100% 10% 0% 100 11/3/20 - 10:00 PM 11/4/20 - 06:23 AM 8:23 93% 23% 0% 70 11/4/20 - 10:00 PM 11/5/20 - 06:31 AM 8:31 95% 4% 0% 83 11/5/20 - 10:00 PM 11/6/20 - 06:35 AM 8:35 95% 8% 0% 105 11/6/20 - 10:03 PM 11/7/20 - 06:29 AM 8:26 94% 9% 0% 78 11/7/20 - 10:00 PM 11/8/20 - 06:25 AM 8:25 94% 27% 0% 71 11/8/20 - 10:02 PM 11/9/20 - 06:28 AM 8:26 94% 1% 30% 70 11/9/20 - 10:02 PM 11/10/20 - 06:46 AM 8:44 97% 0% 11% 84 11/10/20 - 11:15 PM 11/11/20 - 06:29 AM 7:14 80% 0% 38% 58 11/11/20 - 11:35 PM 11/12/20 - 06:39 AM 7:04 79% 0% 28% 57 11/12/20 - 10:00 PM 11/13/20 - 06:38 AM 8:38 96% 0% 19% 100 11/13/20 - 10:00 PM 11/14/20 - 06:42 AM 8:42 97% 0% 58% 81 11/14/20 - 11:26 PM 11/15/20 - 06:35 AM 7:09 79% 10% 12% 50 11/15/20 - 10:06 PM 11/16/20 - 06:30 AM 8:24 93% 0% 11% 74 11/16/20 - 10:00 PM 11/17/20 - 07:00 AM 9:00 100% 0% 1% 102 11/17/20 - 10:00 PM 11/18/20 - 06:01 AM 8:01 89% 0% 44% 71 11/18/20 - 10:02 PM 11/19/20 - 06:30 AM 8:28 94% 0% 48% 90 11/19/20 - 10:00 PM 11/20/20 - 06:22 AM 8:22 93% 0% 38% 93 11/21/20 - 12:28 AM 11/21/20 - 06:47 AM 6:19 70% 16% 0% 57 11/21/20 - 10:02 PM 11/22/20 - 06:44 AM 8:42 97% 26% 1% 88 11/22/20 - 10:00 PM 11/23/20 - 07:00 AM 9:00 100% 0% 88% 85 11/23/20 - 10:33 PM 11/24/20 - 06:42 AM 8:09 91% 86% 0% 81 11/24/20 - 10:00 PM 11/25/20 - 06:16 AM 8:16 92% 4% 83% 83 11/25/20 - 10:00 PM 11/26/20 - 07:00 AM 9:00 100% 0% 92% 88 11/26/20 - 10:00 PM 11/27/20 - 07:00 AM 9:00 100% 0% 91% 87 11/27/20 - 10:02 PM 11/28/20 - 06:34 AM 8:32 95% 0% 91% 74 11/28/20 - 10:00 PM 11/29/20 - 06:34 AM 8:34 95% 0% 91% 91 11/29/20 - 10:02 PM 11/30/20 - 06:31 AM 8:29 94% 0% 0% 95 11/30/20 - 10:01 PM 12/1/20 - 06:51 AM 8:50 98% 16% 3% 105 12/1/20 - 10:00 PM 12/2/20 - 06:38 AM 8:38 96% 0% 44% 87 12/2/20 - 10:39 PM 12/3/20 - 06:38 AM 7:59 89% 0% 33% 78 12/3/20 - 10:22 PM 12/4/20 - 06:27 AM 8:05 90% 0% 43% 82 12/4/20 - 10:00 PM 12/5/20 - 05:59 AM 7:59 89% 46% 0% 70 12/5/20 - 10:00 PM 12/6/20 - 06:32 AM 8:32 95% 28% 5% 82 12/6/20 - 10:00 PM 12/7/20 - 06:22 AM 8:22 93% 45% 0% 76 12/7/20 - 10:01 PM 12/8/20 - 07:00 AM 8:59 100% 39% 0% 99 12/8/20 - 10:00 PM 12/9/20 - 06:27 AM 8:27 94% 31% 0% 75 12/9/20 - 10:00 PM 12/10/20 - 06:33 AM 8:33 95% 54% 0% 87 12/10/20 - 10:04 PM 12/11/20 - 06:34 AM 8:30 94% 0% 60% 92 12/11/20 - 10:10 PM 12/12/20 - 06:41 AM 8:31 95% 0% 58% 84 12/12/20 - 10:15 PM 12/13/20 - 06:39 AM 8:24 93% 41% 0% 66 12/13/20 - 10:20 PM 12/14/20 - 06:35 AM 8:15 92% 15% 0% 62 12/14/20 - 10:14 PM 12/15/20 - 05:46 AM 7:32 84% 0% 9% 69 12/15/20 - 10:07 PM 12/16/20 - 06:10 AM 8:03 89% 0% 11% 70 12/16/20 - 10:06 PM 12/17/20 - 06:07 AM 8:01 89% 3% 6% 78 12/17/20 - 10:00 PM 12/18/20 - 06:29 AM 8:29 94% 47% 0% 102 12/18/20 - 11:55 PM 12/19/20 - 06:37 AM 6:42 74% 39% 0% 67 12/19/20 - 10:14 PM 12/20/20 - 06:38 AM 8:24 93% 9% 0% 80 Chicago Department of Aviation Page 14 April 2021 Interim Fly Quiet Daily Log (7 of 7) Chicago O'Hare International Airport Period: November 3, 2019 through January 31, 2021 Fly Quiet Mode

Fly Quiet Mode1 Time Runway Rotation Adherence

Duration Percentage of Primary Secondary Start Stop Operations4 (hrs: mins) Nighttime2 Configuration3 Configuration3 12/20/20 - 10:00 PM 12/21/20 - 06:38 AM 8:38 96% 84% 0% 93 12/21/20 - 10:00 PM 12/22/20 - 06:32 AM 8:32 95% 87% 0% 104 12/22/20 - 10:01 PM 12/23/20 - 06:30 AM 8:29 94% 89% 0% 84 12/23/20 - 11:45 PM 12/24/20 - 06:45 AM 7:00 78% 84% 0% 61 12/24/20 - 10:00 PM 12/25/20 - 07:00 AM 9:00 100% 89% 0% 63 12/25/20 - 10:00 PM 12/26/20 - 06:45 AM 8:45 97% 88% 0% 78 12/26/20 - 10:04 PM 12/27/20 - 06:44 AM 8:40 96% 20% 28% 80 12/27/20 - 10:23 PM 12/28/20 - 06:41 AM 8:18 92% 28% 0% 78 12/28/20 - 10:00 PM 12/29/20 - 06:46 AM 8:46 97% 37% 0% 105 12/30/20 - 01:23 AM 12/30/20 - 05:34 AM 4:11 46% 0% 0% 30 12/30/20 - 10:03 PM 12/31/20 - 06:41 AM 8:38 96% 8% 0% 100 12/31/20 - 10:01 PM 1/1/21 - 06:08 AM 8:07 90% 2% 27% 45 1/1/21 - 10:39 PM 1/2/21 - 06:34 AM 7:55 88% 0% 0% 75 1/2/21 - 10:07 PM 1/3/21 - 06:35 AM 8:28 94% 0% 11% 76 1/3/21 - 10:45 PM 1/4/21 - 06:32 AM 7:47 86% 0% 44% 71 1/4/21 - 10:00 PM 1/5/21 - 06:39 AM 8:39 96% 0% 55% 107 1/5/21 - 10:04 PM 1/6/21 - 07:00 AM 8:56 99% 0% 50% 80 1/6/21 - 10:14 PM 1/7/21 - 06:47 AM 8:33 95% 14% 0% 78 1/7/21 - 10:00 PM 1/8/21 - 06:06 AM 8:06 90% 51% 0% 84 1/8/21 - 10:02 PM 1/9/21 - 06:42 AM 8:40 96% 24% 8% 79 1/9/21 - 10:00 PM 1/10/21 - 06:47 AM 8:47 98% 0% 60% 77 1/11/21 - 02:53 AM 1/11/21 - 06:40 AM 3:47 42% 0% 3% 30 1/11/21 - 10:00 PM 1/12/21 - 06:44 AM 8:44 97% 0% 32% 84 1/13/21 - 01:10 AM 1/13/21 - 05:30 AM 4:20 48% 0% 0% 14 1/13/21 - 11:47 PM 1/14/21 - 06:39 AM 6:52 76% 0% 2% 55 1/14/21 - 10:00 PM 1/15/21 - 06:14 AM 8:14 91% 0% 0% 79 1/15/21 - 10:00 PM 1/16/21 - 06:35 AM 8:35 95% 0% 1% 72 1/16/21 - 10:00 PM 1/17/21 - 06:08 AM 8:08 90% 0% 12% 60 1/17/21 - 10:05 PM 1/18/21 - 06:44 AM 8:39 96% 0% 87% 76 1/18/21 - 10:00 PM 1/19/21 - 07:00 AM 9:00 100% 0% 93% 88 1/19/21 - 10:00 PM 1/20/21 - 06:36 AM 8:36 96% 0% 63% 82 1/20/21 - 10:03 PM 1/21/21 - 06:48 AM 8:45 97% 0% 95% 84 1/21/21 - 10:19 PM 1/22/21 - 05:40 AM 7:21 82% 0% 67% 63 1/22/21 - 10:02 PM 1/23/21 - 06:30 AM 8:28 94% 0% 47% 66 1/23/21 - 10:00 PM 1/24/21 - 06:43 AM 8:43 97% 76% 0% 67 1/24/21 - 10:00 PM 1/25/21 - 06:06 AM 8:06 90% 41% 0% 70 1/25/21 - 10:00 PM 1/26/21 - 06:50 AM 8:50 98% 0% 0% 78 1/26/21 - 10:00 PM 1/27/21 - 07:00 AM 9:00 100% 0% 0% 81 1/27/21 - 10:18 PM 1/28/21 - 06:47 AM 8:29 94% 4% 7% 74 1/28/21 - 10:00 PM 1/29/21 - 06:57 AM 8:57 99% 0% 37% 90 1/29/21 - 10:03 PM 1/30/21 - 06:50 AM 8:47 98% 15% 0% 74 1/30/21 - 10:06 PM 1/31/21 - 06:46 AM 8:40 96% 0% 0% 43 Notes: 1: Fly Quiet Mode is the period of time in which the nighttime operations are operating in accordance with CDA’s Fly Quiet Program. 2: FAR Part 150 considers nighttime hours 10:00 PM - 07:00 AM. 3: Percentage of operations on designated runways within Fly Quiet Mode. 4: Operations within Fly Quiet Mode. 5: On the night of 12/30/19, Fly Quiet Mode was restricted due to inclement weather. 6: Due to an interruption with the NextGen Radar Feed the CDA did not receive complete radar data on the nights of 1/31/20, 2/1/20, and 2/2/20.

Chicago Department of Aviation Page 15 April 2021 NIGHTTIME WEEKLY WIND SUMMARY WEEKS 1 - 14

Source: National Climatic Data Center, 11/3/2019 - 2/8/2020; http://www.ncdc.noaa.gov

Chicago Department of Aviation Page 16 April 2021 NIGHTTIME WEEKLY WIND SUMMARY WEEKS 15 - 28

Source: National Climatic Data Center, 2/9/2020 - 5/16/2020; http://www.ncdc.noaa.gov

Chicago Department of Aviation Page 17 April 2021 NIGHTTIME WEEKLY WIND SUMMARY WEEKS 29 - 38

Source: National Climatic Data Center, 9/13/2020 - 11/21/2020; http://www.ncdc.noaa.gov

Chicago Department of Aviation Page 18 April 2021 NIGHTTIME WEEKLY WIND SUMMARY

WEEKS 39 - 48

Source: National Climatic Data Center, 11/22/2020 - 1/30/2021; http://www.ncdc.noaa.gov

Chicago Department of Aviation Page 19 April 2021 Runway Use Report Chicago O'Hare International Airport Period: November 3, 2019 through January 31, 2021 Fly Quiet Mode

Runway Use Source: Airport Noise Management System (ANMS) Runway Utilization 4L 4R 9L 9C 9R 10L 10C 10R 22L 22R 27L 27C 27R 28L 28C 28R Average Daily Operations Departures 1 0 0 0 1 4 1 0 3 0 0 0 0 0 5 14 Arrivals 0 3 0 0 0 3 7 0 0 5 8 0 0 0 18 5 Percentage Utilization Departures 3% 0% 0% 0% 5% 13% 5% 0% 11% 0% 1% 0% 0% 0% 17% 45% Arrivals 0% 5% 0% 0% 1% 7% 14% 0% 0% 11% 17% 0% 0% 0% 36% 10%

Departures Arrivals 50% 50%

40% 40%

30% 30%

20% 20%

10% 10%

0% 0%

Percentage Departure Utilization Percentage Arrival Utilization

11 #RE 3 #

0 0 0 0

0 0 0 0 0 0

17 1 5 1

0 1 7 45 13 10

17 5 14 36 0 0 0 0 # #

0 0 0 0 11 5

Runway 9C-27C was commissioned on November 5, 2020.

Chicago Department of Aviation Page 20 April 2021 Airline Summary Report (1 of 2) Chicago O'Hare International Airport Period: November 3, 2019 through January 31, 2021 Fly Quiet Mode

Airline Arrivals Departures Total Name Type1

United Airlines P 3,810 790 4,600 P 2,299 1,073 3,372 FedEx C 1,062 898 1,960 P 1,095 435 1,530 Sky West Aviation P 1,034 351 1,385 UPS C 770 500 1,270 P 542 334 876 American Eagle/Envoy P 543 222 765 P 579 147 726 C 229 367 596 AeroMexico P 279 285 564 P 257 297 554 P 258 271 529 Cargo C 221 279 500 Cargo C 193 281 474 P 404 67 471 Airlines C 163 223 386 C 184 131 315 Asiana Cargo C 119 185 304 Jetblue Airways P 205 73 278 EVA Air P 2 274 276 Cargo C 120 144 264 General Aviation -- 128 129 257 C 79 168 247 ABX Air C 77 156 233 Air Transport International C 188 32 220 Turkish Cargo C 87 125 212 / P 136 70 206 Cargo C 40 166 206 China Southern Cargo C 113 92 205 Republic Airlines P 140 49 189 AirBridge Cargo Airlines C 78 111 189 Cargo C 40 142 182 Cargo C 52 126 178 United Express/ExpressJet P 146 21 167 Aerologic C 59 104 163 Freight C 73 77 150 SkyCargo C 48 100 148 VivaAerobus P 43 104 147 C 66 81 147 Silk Way West Airlines C 59 79 138 United Express/Gojet P 73 62 135 LOT P 9 112 121 P 108 10 118 P 85 12 97 P 69 3 72 Cargolux Italia C 31 38 69 EVA Air Cargo C 31 32 63 P 0 58 58 Note 1: Passenger Carrier (P) or Dedicated Cargo (C)

Chicago Department of Aviation Page 21 April 2021 Airline Summary Report (2 of 2) Chicago O'Hare International Airport Period: November 3, 2019 through January 31, 2021 Fly Quiet Mode

Airline Arrivals Departures Total Name Type1

Hainan Airlines P 10 41 51 Qatar Airways P 6 38 44 P 43 1 44 United Express/Trans States P 17 24 41 C 9 32 41 C 32 9 41 Etihad Cargo C 10 30 40 C 17 22 39 Lufthansa P 2 35 37 National Air Cargo C 18 19 37 P 36 0 36 Swiss Air Lines P 0 35 35 LATAM Cargo Chile C 17 18 35 P 0 34 34 Air France P 2 32 34 Express/Sky Regional P 18 13 31 C 9 21 30 P 26 1 27 CargoLogicAir C 5 19 24 P 10 14 24 AeroUnion C 7 15 22 Cargo C 7 13 20 / P 6 9 15 Air Icelandic C 4 11 15 ANA Cargo C 14 1 15 C 0 15 15 TAP Air Portugal P 14 0 14 ASL Airlines Belgium C 5 9 14 Emirates P 4 6 10 C 0 8 8 C 2 5 7 Volga-Dnepr Airlines C 0 5 5 P 3 2 5 P 4 1 5 P 1 3 4 United Express/CommutAir P 0 2 2 P 0 2 2 European Air Transport C 2 0 2 P 0 2 2 P 0 1 1 American Eagle/Piedmont P 1 0 1 Cargo C 0 1 1 P 0 1 1 Ethiopian Cargo C 1 0 1 Antonov Airlines C 1 0 1 P 0 1 1 United Express/Mesa P 1 0 1 P 0 1 1 Total 97 16,790 10,438 27,228 Note 1: Passenger Carrier (P) or Dedicated Cargo (C)

Chicago Department of Aviation Page 22 April 2021 Aircraft Fleet Mix Report Chicago O'Hare International Airport Period: November 3, 2019 through January 31, 2021 Fly Quiet Mode

Average Percentage Percentage Operations of of Aircraft per Day Total Total (Interim Fly Quiet) (Interim Fly Quiet) (Interim Fly Quiet) Regional Aircraft

CRJ200/700/900 5 5.6%

E135/E145 2 2.2%

E170/E175 3 3.0%

E190 0 0.4%

Turboprop Aircraft 0 0.5%

Subtotal 10 11.7%

Narrow-Body Aircraft

A220 0 0.4%

A319/320/321 20 24.1%

B717 1 0.6%

B737 14 17.3%

B757 4 5.2%

MD80 0 0.0%

MD90 0 0.2%

Subtotal 39 47.8%

Wide-Body Aircraft

A300 2 2.0%

A330 0 0.2%

A340 0 0.4%

A350 0 0.2%

B747 10 12.4%

B767 7 7.8%

B777 9 10.9%

B787 2 2.8%

MD10/11 2 2.9%

Subtotal 32 39.6%

General Aviation 1 0.9%

0% 20% 40% Total 82 100%

Chicago Department of Aviation Page 23 April 2021

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