Diversion — ASA9677

KSEA · 16R

2026-04-12 10:40 UTC· KBFI → KSEA· ALASKA AIRLINES INC· B39M

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ASA9677 (Alaska Airlines) was operating from KBFI to KPAE (Snohomish County (Paine Field) Airport) on 2026-04-12. SkyMeter detected a diversion to Seattle Tacoma International Airport (KSEA) on runway 16R at 10:40 UTC. Peak altitude 4,998 ft, turnaround area near Mercer Island, 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.

Pilot review data

  • Runway 16R
  • 363 ft AGL at event
  • 120 kt ground speed
  • 0 fpm vertical
  • 5 kt wind
  • 1 kt crosswind component
  • 16,093 m visibility
  • KSEA 221253Z 02006KT 10SM FEW016 BKN037 15/11 A3004 RMK AO2 SLP177 T01500111 $

Flight context

  • ASA9677
  • Alaska Airlines
  • B39M
  • KBFI → KSEA
  • 2026-04-12 10:40 UTC
  • KSEA runway 16R

All events on this flight

Diversion 10:40:37 UTC · KSEA runway 16R · 363 ft AGL · 120 kt GS
Diversion 10:40:37 UTC · KSEA runway 16R · 363 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· KSEA