Squawk 7600 transmission — N558AP

N558AP (LMC Leasing) was operating from 3GE7 to KCHA on 2025-12-01. SkyMeter recorded a 7600 transponder transmission at 17:32 UTC. Code 7600 indicates a lost-comms / NORDO state; brief transmissions are often transient radio or transponder issues that resolve without crew action. Trace data at the event: 19697 ft AGL, 370 kt GS. Approach stability score: 31/100. Scores below 50 occur on under 10% of approaches at this runway and indicate the v2 scorer flagged the approach as highly anomalous (three or more gates exceeded the runway's P90 envelope simultaneously). METAR at the time reported 6 kt wind, 5 kt crosswind component. Detection algorithm and known limitations: see SkyMeter methodology.

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