Notable event

Emergency: squawk 7600

Notable flight event recorded by the PlaneTrack receiver network on Wed 26 Aug 2026, 02:13 UTC.

Event record

Flight	N915CM
Aircraft	ACA97C
Aircraft type	C172
First seen	Wed 26 Aug 2026, 02:13 UTC
Last seen	Wed 26 Aug 2026, 03:07 UTC
Position	37.796, -121.961 near Livermore Municipal Airport (KLVK)
Altitude	4,000 ft

Details

Squawk	7600
Nature	radio failure

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.