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• 2023 DNL CONTOUR MEANING HOW TO

The original Fly Quiet Program, in place since 1997, has become obsolete due to the O’Hare Modernization Program, which completely reconfigured the airfield by deactivating runways, adding new parallel runways, and extending existing runways.

In addition to approving the plan with nighttime primary and secondary runway headings and long runway designations, the committee also established operational, procedural, and implementation recommendations. The new Fly Quiet plan features six runway configurations that alternate weeks from the north airfield to the south airfield and air traffic flow from east to west to balance nighttime noise impacts, avoid consecutive impacts, and offer predictability to communities located within the O’Hare region. The recommended nighttime runway rotation program was developed by the 11-member ONCC Fly Quiet Committee. The O’Hare Noise Compatibility Commission (ONCC) has voted to approve a new Fly Quiet Program at a special meeting on August 17, 2022. The O’Hare Noise Compatibility Commission Approves New Fly Quiet Program - (Released August 17, 2022) Read and comment on the FRN and get more information here. The findings from ongoing noise research, including the Neighborhood Environmental Survey and other research related to health impacts, speech interference, sleep disturbance, and economic impacts.Ways to improve communications on proposed noise-related agency actions.

2023 DNL CONTOUR MEANING HOW TO

The community’s understanding of noise impacts and how to better manage and respond to the community’s aviation noise concerns.If and how alternative noise metrics may be used in lieu of or in addition to DNL to better inform agency decisions and improve FAA’s disclosure of noise impacts.The FAA’s current use of DNL or Day-Night Average Sound Level as the primary noise metric for assessing cumulative aircraft noise exposure.The NPR will look at these key items and more based on input received from the public and stakeholders:

‍The FAA is seeking public comment on its Noise Policy Review (NPR). UPDATE: FAA announced in the July 11 Federal Register that it has extended the public comment period on its aviation noise policy review from July 31 to Sept.