Notable event

Emergency: squawk 7500

Notable flight event recorded by the PlaneTrack receiver network on Mon 28 Sep 2026, 15:36 UTC.

Event record

Flight	N199FF
Aircraft	A18A1D
Aircraft type	H500
First seen	Mon 28 Sep 2026, 15:36 UTC
Last seen	Mon 28 Sep 2026, 15:41 UTC
Position	41.866, -88.041 near CHICAGO OHARE INTERNATIONAL (KORD)
Altitude	700 ft

Details

Squawk	7500
Nature	unlawful interference

What is an emergency squawk?

Pilots set their transponder to 7700 for a general emergency, 7600 for lost radio contact or 7500 for unlawful interference. Most 7700 codes are precautionary: a medical problem on board, a technical warning or a return to the departure airport. Codes are sometimes set by mistake and corrected within seconds.

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Event detected automatically from live ADS-B data. Times are UTC. Automated detections can occasionally misread routine operations.