Unstable approach — N511JC

KAPC · 19R

2026-05-30 18:11 UTC· KDPA → KAPC· INTERMODAL AIR LLC· H25B

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N511JC (Intermodal AIR) was operating from KDPA to KAPC on 2026-05-30. SkyMeter detected a low approach-stability score at Napa County Airport (KAPC) on runway 19R at 18:11 UTC. Trace data at the event: 1125 ft AGL, 127 kt GS. Approach stability score: 51/100. 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 4 kt wind, 3 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)
  • SECURITY6/3475 2026-03-08 09:00Z – 2026-11-01 09:59Z SFC–180 ft

    BEALE AFB, CA, Sunday, March 8, 2026 through Sunday, November 1, 2026 Local

    View FAA NOTAM →
  • 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 →
  • HAZARDS6/3889 2026-05-28 22:59Z – 2026-06-10 04:00Z SFC–10,500 ft

    11NM SE SPANISH FORK, UT, Thursday, May 28, 2026 through Wednesday, June 10, 2026 UTC

    View FAA NOTAM →
  • HAZARDS6/3574 2026-05-29 14:00Z – 2026-06-10 02:00Z SFC–13,000 ft

    38NM SE TWIN FALLS, ID, Friday, May 29, 2026 through Wednesday, June 10, 2026 UTC

    View FAA NOTAM →
  • HAZARDS6/3888 2026-05-29 14:00Z – 2026-06-10 04:00Z SFC–13,000 ft

    38NM SE TWIN FALLS, ID, Friday, May 29, 2026 through Wednesday, June 10, 2026 UTC

    View FAA NOTAM →
  • SECURITY6/3548 2026-05-29 22:30Z – 2026-05-31 04:00Z SFC–400 ft

    Denver, CO, Friday, May 29, 2026 through Saturday, May 30, 2026 Local

    View FAA NOTAM →
  • SECURITY6/3944 2026-05-29 22:30Z – 2026-05-31 06:00Z SFC–400 ft

    Denver, CO, Friday, May 29, 2026 through Sunday, May 31, 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 19R
  • 1125 ft AGL at event
  • 127 kt ground speed
  • 0 fpm vertical
  • Approach stability 51/100
  • 4 kt wind
  • 3 kt crosswind component
  • 16,093 m visibility
  • METAR KAPC 170554Z AUTO 00000KT 10SM CLR 13/02 A3005 RMK AO2 SLP168 T01330022 10300 20133 51007

Flight context

  • N511JC
  • Intermodal AIR
  • H25B
  • KDPA → KAPC
  • 2026-05-30 18:11 UTC
  • KAPC runway 19R

All events on this flight

Unstable approach 18:11:16 UTC · KAPC runway 19R · 1,125 ft AGL · 127 kt GS
Unstable approach 18:11:16 UTC · KAPC runway 19R · 1,125 ft AGL · 127 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