Diversion — ASA478

KONT · 08L

2026-05-18 04:19 UTC· KSEA → KONT· ALASKA AIRLINES INC, C/O LEGAL SEAZL· B39M

▶ Replay 📊 Analyse

ASA478 (Alaska Airlines) was operating from KSEA to KLAS (McCarran International Airport) on 2026-05-18. SkyMeter detected a diversion to Ontario International Airport (KONT) on runway 08L at 04:19 UTC. Peak cruise altitude FL379, turnaround area near Washoe, US. METAR at the time reported 5 kt wind, 1 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)
  • SECURITY5/0601 2025-11-30 19:00Z – 2026-05-31 18:59Z SFC–400 ft

    Los Angeles, CA, Sunday, November 30, 2025 through Sunday, May 31, 2026 Local

    View FAA NOTAM →
  • 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 →
  • SPACE OPERATIONS6/0743 2026-05-17 15:00Z – 2026-05-18 05:00Z SFC–10,000 ft

    43 ZSE AIRSPACE BROTHERS, OR, Sunday, May 17, 2026 through Monday, May 18, 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
  • 930 ft AGL at event
  • 120 kt ground speed
  • 0 fpm vertical
  • 5 kt wind
  • 1 kt crosswind component
  • 16,093 m visibility
  • KONT 200853Z 26005KT 10SM SCT300 18/16 A2995 RMK AO2 SLP126 T01830161 53001

Flight context

  • ASA478
  • Alaska Airlines
  • B39M
  • KSEA → KONT
  • 2026-05-18 04:19 UTC
  • KONT runway 08L

All events on this flight

Diversion 04:19:49 UTC · KONT runway 08L · 930 ft AGL · 120 kt GS
Diversion 04:19:49 UTC · KONT runway 08L · 930 ft AGL · 120 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· KONT