Long landing rollout — N680TW

N680TW (Billings Clinic) was operating from US-1513 to KBIL on 2025-11-23. SkyMeter detected a long landing rollout at Billings Logan International Airport (KBIL) on runway 28L at 10:20 UTC. Trace data at the event: 3585 ft AGL, 2 kt GS. Approach stability score: 23/100. 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 10 kt wind, 10 kt crosswind component, 16,093 m visibility. A long landing rollout is detected when ground deceleration after touchdown is below the per-runway P10 envelope. It is an observational measure of rollout efficiency, not a runway-exit incident. Detection algorithm and known limitations: see SkyMeter methodology.

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