Long landing rollout — N20T

N20T (Tuthill) was inbound to KHEF on 2026-08-17. SkyMeter detected a long landing rollout at Manassas Regional Airport/Harry P. Davis Field (KHEF) on runway 34R at 14:11 UTC. Trace data at the event: 164 ft AGL, 15 kt GS, 0 fpm vertical. Approach stability score: 64/100. Scores in this band occur on roughly 10-15% of approaches at this runway, with multiple gates outside the per-runway envelope. METAR at the time reported 9 kt wind, 3 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.

• SECURITY6/3628 2026-08-17 12:00Z – 2026-08-23 23:59Z SFC–400 ft

  SAINT LOUIS, MO, Monday, August 17, 2026 through Sunday, August 23, 2026 Local

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SkyMeter cross-referenced this flight against FAA-published TFRs that were active during its window and within its geographic bounding box. Overlap doesn't necessarily mean violation — the aircraft may have been outside the TFR’s precise polygon or flying under air-traffic-control coordination.

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Automated analysis. Events shown on this page (such as go-around, unstable approach, or runway events) are heuristic classifications produced by algorithms from publicly broadcast ADS-B data. They are intended to surface flights of interest for further review — they are not findings of fact, and they do not determine pilot fault, regulatory compliance, or the cause of any occurrence. Coverage gaps and sensor noise can affect accuracy. Only the relevant civil aviation authority or accident investigation body can make official determinations. How we detect events · Dispute or correct this data