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The ONCC met on Friday, June 5, 2020 via Zoom videoconference. View Packet

June 5, 2020 ONCC General Meeting Agenda Packet now available - click here.

As part of the FAA Reauthorization Act of 2018, Congress directed an evaluation of alternative metrics. Various noise metrics have been developed over several decades of research to inform federal policies. The report states that no single metric can cover all situations due to the dynamic acoustical and operational characteristics of aviation noise. The appropriate use of noise modeling and noise measurement are also be reviewed and the context in which each are applicable.

The report concludes that no single noise metric can cover all situations. However, the DNL metric, and similar versions such as Lden, are being used world-wide to assess aircraft noise effects on communities. The report reaffirms the DNL metric as the FAA’s decision-making metric, and states that other supplementary metrics can be used to support further disclosure and aid in the public understanding of community noise effects.

FAA Study regarding day-night average sound levels

View the latest ONCC E-News: May 2020

The ONCC Fly Quiet Committee met on May 26, 2020 via Zoom video conference.

CDA presented IFQ weekly reports for weeks 24-28. Week 28 concludes first period of IFQ while 4R/22L undergoes rehabilitation work. IFQ is scheduled to resume mid-September. More details on construction impacts and schedule will be provided at the June 5 full commission meeting. Poor utilization of diagonal runways was due to the COVID-19 situation. Aircraft parked on the airfield interfere with navigational aids. Inclimate weather also impacted usage. View reports

The ONCC Technical Committee met on May 19, 2020.

The Interim Fly Quiet Runway Rotation Plan was in place from November 3, 2019 to May 17, 2020. The program is now on pause for the summer construction season at O'Hare, as the O'Hare Modernization Program (OMP) progresses toward completion. Runway 4R/22L is slated for reconstruction this summer. and during that time operations will revert to the original Fly Quiet program. The Interim Fly Quiet rotation plan will resume September 13, 2020 and will be in place through January 31, 2021, at which time work to complete Runway 9R/27L will necessitate the program to be paused once again. 

The ONCC Fly Quiet Committee is currently working to develop an alternative Fly Quiet Program to be in place once the OMP is completed.