Airport Engine Run-up: Chicago vs Oak Lawn
How do airport engine run-up rules compare between Chicago, IL and Oak Lawn, IL?
Oak Lawn has fewer restrictions than Chicago.
Chicago, IL
Cook County
Engine run-up testing at O'Hare and Midway must occur inside the airport ground run-up enclosure or designated pads during permitted hours. The Chicago Department of Aviation noise abatement rules limit unmuffled run-ups, especially overnight near residential boundaries.
View full Chicago rules →Oak Lawn, IL
Cook County
Both O'Hare and Midway are City of Chicago Department of Aviation airports operating under FAA Part 150 noise compatibility programs. Cook County has no county-owned commercial airport and therefore no county-level engine run-up rules; CDA airfield-use procedures govern run-ups.
View full Oak Lawn rules →Key Facts Comparison
| Fact | Chicago | Oak Lawn |
|---|---|---|
| ORD enclosure | Ground Run-up Enclosure | - |
| Curfew | Full power 10pm to 7am | - |
| Authority | CDA Operations Directives | - |
| Federal layer | FAR Part 150 program | - |
| Max fine | Up to $25,000 | - |
| Airport owner | - | City of Chicago Dept of Aviation |
| Federal program | - | FAA Part 150 noise study |
| Voluntary program | - | Fly Quiet nighttime runway |
| County airports | - | None owned by Cook |
| Suburban exec airport | - | PWK Wheeling/Prospect Heights |
Highlighted rows indicate differences between cities.
Chicago FAQ
Where do O'Hare engine run-ups happen?
Inside the Ground Run-up Enclosure on the north airfield. Idle and low-power runs may occur on designated pads, but high-power and overnight runs must use the GRE under CDA Operations Directives.
Can residents complain about Midway run-up noise?
Yes. File through the CDA Noise Management portal at flychicago.com. CDA tracks complaints, audits run-up logs, and may impose lease penalties on carriers that violate procedures.
Oak Lawn FAQ
Why doesn't Cook County regulate O'Hare noise?
Cook County does not own O'Hare or Midway, and federal law preempts non-proprietor noise rules at federally obligated airports under 49 USC 47107. The City of Chicago Department of Aviation is the airport proprietor and runs the noise program.
Where do I report a 3 a.m. engine run-up at O'Hare?
Call or email the CDA O'Hare Noise Office and file a complaint through the Airport Noise Management System. The CDA tracks complaints, validates aircraft type, and shares data with the O'Hare Noise Compatibility Commission.
Does Cook County run any general aviation airport?
No. The closest suburban field, Chicago Executive Airport (PWK), is jointly owned by the villages of Wheeling and Prospect Heights. DuPage Airport (DPA) is in DuPage County. Lansing Municipal is operated by the Village of Lansing.
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