Unstable approach — N511KS

N511KS (Echo Matrix) was operating from KVBT to KAPC on 2026-05-29. SkyMeter detected a low approach-stability score at Napa County Airport (KAPC) on runway 19R at 14:41 UTC. Trace data at the event: 1142 ft AGL, 96 kt GS. Approach stability score: 53/100. 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 5 kt wind, 4 kt crosswind component, 16,093 m visibility. The approach-stability score rates the final approach against stabilized-approach gates (glideslope, lateral deviation, descent rate, and IAS) at defined altitudes. A low score means one or more of those were outside the normal envelope for how the approach was flown. The score is graded by guidance type, so instrument approaches (ILS or an aligned straight-in) are held to the full gate set, while visual and pattern arrivals are surfaced only when the score is clearly low. The score is advisory and observational, a deviation measure, not an assertion of an accident. Detection algorithm and known limitations: see SkyMeter methodology.

• SECURITY6/5797 2026-04-03 00:01Z – 2026-09-28 23:59Z SFC–400 ft

  SACRAMENTO, CA, Thursday, April 2, 2026 through Monday, September 28, 2026 Local

  View FAA NOTAM →
• SECURITY6/0758 2026-05-18 07:01Z – 2026-05-31 06:59Z SFC–1,499 ft

  Concord, CA, Monday, May 18, 2026 through Saturday, May 30, 2026 Local

  View FAA NOTAM →
• HAZARDS6/1358 2026-05-19 00:52Z – 2026-06-02 02:00Z SFC–10,000 ft

  5NM S CAMPO, CO, Tuesday, May 19, 2026 through Tuesday, June 2, 2026 UTC

  View FAA NOTAM →

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.

All events on this flight

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