Notable event

Emergency: squawk 7500

Notable flight event recorded by the PlaneTrack receiver network on Thu 17 Sep 2026, 23:49 UTC.

Event record

Flight	N1873H
Aircraft	A15D76
Aircraft type	C310
First seen	Thu 17 Sep 2026, 23:49 UTC
Last seen	Fri 18 Sep 2026, 00:39 UTC
Position	37.965, -89.241 near Southern Illinois Airport (KMDH)
Altitude	2,200 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.