Diversion — UAL643

KCNO · 08L

2026-08-12 18:50 UTC· KSFO → KCNO· UNITED AIRLINES INC· B38M

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UAL643 (United Airlines) was operating from KSFO to KSNA (John Wayne Airport-Orange County Airport) on 2026-08-12. SkyMeter detected a diversion to Chino Airport (KCNO) on runway 08L at 18:50 UTC. Peak cruise altitude FL388, turnaround area near Shandon, US. METAR at the time reported 5 kt wind, 2 kt crosswind component, 16,093 m visibility. Detection algorithm and known limitations: see SkyMeter methodology.

Active FAA TFR during this flight

Source: FAA TFR archive (hourly snapshot)
  • HAZARDS6/7246 2026-07-21 05:00Z – 2026-08-21 03:00Z SFC–10,500 ft

    20NM N INDEPENDENCE, CA, Tuesday, July 21, 2026 through Friday, August 21, 2026 UTC

    View FAA NOTAM →
  • HAZARDS6/7372 2026-07-21 13:38Z – 2026-08-22 03:00Z SFC–10,500 ft

    20NM N INDEPENDENCE, CA, Tuesday, July 21, 2026 through Saturday, August 22, 2026 UTC

    View FAA NOTAM →
  • HAZARDS6/2274 2026-08-05 19:25Z – 2026-08-15 04:00Z SFC–13,500 ft

    25NM S BISHOP, CA, Wednesday, August 5, 2026 through Saturday, August 15, 2026 UTC

    View FAA NOTAM →
  • HAZARDS6/2489 2026-08-06 02:15Z – 2026-08-19 04:00Z SFC–9,000 ft

    27NM S BAKERSFIELD, CA, Thursday, August 6, 2026 through Wednesday, August 19, 2026 UTC

    View FAA NOTAM →
  • HAZARDS6/2916 2026-08-08 01:45Z – 2026-08-15 05:00Z SFC–6,000 ft

    25NM S BAKERSFIELD, CA, Saturday, August 8, 2026 through Saturday, August 15, 2026 UTC

    View FAA NOTAM →
  • HAZARDS6/3138 2026-08-09 17:20Z – 2026-08-22 15:00Z SFC–15,000 ft

    15NM SE BIG PINE, CA, Sunday, August 9, 2026 through Saturday, August 22, 2026 UTC

    View FAA NOTAM →
  • HAZARDS6/3157 2026-08-10 01:18Z – 2026-08-23 15:00Z SFC–7,500 ft

    8NM SE BIG SUR, CA, Monday, August 10, 2026 through Sunday, August 23, 2026 UTC

    View FAA NOTAM →
  • HAZARDS6/3480 2026-08-10 18:36Z – 2026-08-23 15:00Z SFC–7,500 ft

    8NM SE BIG SUR, CA, Monday, August 10, 2026 through Sunday, August 23, 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.

Pilot review data

  • Runway 08L
  • 636 ft AGL at event
  • 120 kt ground speed
  • 0 fpm vertical
  • 5 kt wind
  • 2 kt crosswind component
  • 16,093 m visibility
  • METAR KCNO 160453Z AUTO 25005KT 10SM 19/15 A2995 RMK AO2 SLP136 T01890150 $

Flight context

  • UAL643
  • United Airlines
  • B38M
  • KSFO → KCNO
  • 2026-08-12 18:50 UTC
  • KCNO runway 08L

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· KCNO