Unstable approach — KFB999

KAPC · 18R

2026-06-05 16:23 UTC· KSBD → KAPC· AVIATION SALES ASSOCIATES LLC· GLF4

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KFB999 (Aviation Sales Associates) was operating from KSBD to KAPC on 2026-06-05. SkyMeter detected a low approach-stability score at Napa County Airport (KAPC) on runway 18R at 16:23 UTC. Trace data at the event: 1151 ft AGL, 148 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 9 kt wind, 1 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.

Active FAA TFR during this flight

Source: FAA TFR archive (hourly snapshot)
  • HAZARDS6/2573 2026-05-25 15:00Z – 2026-06-06 03:00Z SFC–8,000 ft

    32NM SW SANTA BARBARA, CA, Monday, May 25, 2026 through Saturday, June 6, 2026 UTC

    View FAA NOTAM →
  • HAZARDS6/2830 2026-05-25 15:45Z – 2026-06-11 16:00Z SFC–5,000 ft

    GARDEN GROVE, CA, Monday, May 25, 2026 through Thursday, June 11, 2026 UTC

    View FAA NOTAM →
  • SECURITY6/4052 2026-06-01 07:00Z – 2026-07-21 06:59Z SFC–400 ft

    San Jose, CA, Monday, June 1, 2026 through Monday, July 20, 2026 Local

    View FAA NOTAM →
  • SECURITY6/4054 2026-06-01 07:00Z – 2026-07-21 06:59Z SFC–400 ft

    San Jose, CA, Monday, June 1, 2026 through Monday, July 20, 2026 Local

    View FAA NOTAM →
  • SECURITY6/4060 2026-06-01 07:00Z – 2026-07-21 06:59Z SFC–400 ft

    Oakland, CA, Monday, June 1, 2026 through Monday, July 20, 2026 Local

    View FAA NOTAM →
  • SECURITY6/4061 2026-06-01 07:00Z – 2026-07-21 06:59Z SFC–400 ft

    BERKLEY, CA, Monday, June 1, 2026 through Tuesday, July 21, 2026 Local

    View FAA NOTAM →
  • SECURITY6/4182 2026-06-01 07:00Z – 2026-07-21 06:59Z SFC–400 ft

    Irvine, CA, Monday, June 1, 2026 through Monday, July 20, 2026 Local

    View FAA NOTAM →
  • SECURITY6/4189 2026-06-01 07:00Z – 2026-07-21 06:59Z SFC–400 ft

    Los Angeles, CA, Monday, June 1, 2026 through Monday, July 20, 2026 Local

    View FAA NOTAM →
  • SECURITY6/4192 2026-06-01 07:00Z – 2026-07-21 06:59Z SFC–400 ft

    Santa Barbara, CA, Monday, June 1, 2026 through Monday, July 20, 2026 Local

    View FAA NOTAM →
  • SECURITY6/4197 2026-06-01 07:00Z – 2026-07-21 06:59Z SFC–400 ft

    GOLETA, CA, Monday, June 1, 2026 through Monday, July 20, 2026 Local

    View FAA NOTAM →
  • SECURITY6/4198 2026-06-01 07:00Z – 2026-07-21 06:59Z SFC–400 ft

    IRVINE, CA, Monday, June 1, 2026 through Monday, July 20, 2026 Local

    View FAA NOTAM →
  • SECURITY6/4201 2026-06-01 07:00Z – 2026-07-21 06:59Z SFC–400 ft

    Dana Point, CA, Monday, June 1, 2026 through Monday, July 20, 2026 Local

    View FAA NOTAM →
  • SECURITY6/4204 2026-06-01 07:00Z – 2026-07-21 06:59Z SFC–400 ft

    Santa Clara, CA, Monday, June 1, 2026 through Monday, July 20, 2026 Local

    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.

Pilot review data

  • Runway 18R
  • 1151 ft AGL at event
  • 148 kt ground speed
  • 0 fpm vertical
  • Approach stability 53/100
  • 9 kt wind
  • 1 kt crosswind component
  • 16,093 m visibility
  • METAR KAPC 150354Z AUTO 16004KT 10SM CLR 16/08 A3010 RMK AO2 SLP183 T01560078

Flight context

  • KFB999
  • Aviation Sales Associates
  • GLF4
  • KSBD → KAPC
  • 2026-06-05 16:23 UTC
  • KAPC runway 18R

All events on this flight

Unstable approach 16:23:46 UTC · KAPC runway 18R · 1,151 ft AGL · 148 kt GS
Unstable approach 16:23:46 UTC · KAPC runway 19R · 1,151 ft AGL · 148 kt GS
Long landing rollout 14:41:40 UTC · KSNA runway 20R · 72 ft AGL · 0 kt GS
Unstable approach 16:23:46 UTC · KAPC runway 19R · 1,151 ft AGL · 148 kt GS
Long landing rollout 14:41:40 UTC · KSNA runway 20R · 72 ft AGL · 0 kt GS

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

SkyMeter · trace data observed via ADS-B· KAPC