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United States Department of Transportation United States Department of Transportation

Frequently Asked Questions (FAQ)

In response to the numerous questions regarding the O'Hare Modernization Program and in a continuing effort to provide communication through community outreach, FAA will be posting the questions and FAA's responses on this web site. If the questions posed are outside FAA's jurisdiction we will forward them, as appropriate, to the O'Hare Noise Compatibility Commission (ONCC) or the City of Chicago. You may submit your questions at

Acronyms and Abbreviations

Agency Roles and Responsibilities for ONCC/City of Chicago Department of Aviation/Federal Aviation Administration (PDF)

Air Quality

Aircraft Noise & Noise Monitoring

Airspace Utilization

EIS Information

General Concerns

Interim Fly Quiet

Runway Utilization

Sound Insulation

Correspondence: 2018

Correspondence: 2017

Correspondence: 2016

Correspondence: 2015

Correspondence: 2014

Correspondence: 2013

Correspondence: 2012

Correspondence: 2011

Correspondence: 2010

Correspondence: 2009

Correspondence: 2008

Monthly FAA correspondence to the O’Hare Noise Compatibility Commission (ONCC)

Review the final Environmental Impact Statement and Record of Decision dated September 2005.

If you cannot read a PDF file, please call (847) 294-7131, or email

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