Rejected takeoff — ASA643

KDEN · 25

2026-03-27 13:03 UTC· KDEN → KSEA· ALASKA AIRLINES INC· B39M

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ASA643 (Alaska Airlines) was operating from KDEN to KSEA on 2026-03-27. SkyMeter detected a rejectedtakeoff at Denver International Airport (KDEN) on runway 25 at 13:03 UTC. Trace data at the event: 5364 ft AGL, 68 kt GS. Approach stability score: 71/100. Scores in this band are observed on roughly 25% of approaches at this runway: one or more gates outside the per-runway tightest envelope, but still inside the typical operating range. METAR at the time reported 8 kt wind, 16,093 m visibility. Detection algorithm and known limitations: see SkyMeter methodology.

Pilot review data

  • Runway 25
  • 5364 ft AGL at event
  • 68 kt ground speed
  • 0 fpm vertical
  • Approach stability 71/100
  • 8 kt wind
  • 0 kt crosswind component
  • 16,093 m visibility
  • KDEN 162330Z AUTO 35011KT 10SM CLR 25/07 A3028 RMK T02500070 MADISHF

Flight context

  • ASA643
  • Alaska Airlines
  • B39M
  • KDEN → KSEA
  • 2026-03-27 13:03 UTC
  • KDEN runway 25

All events on this flight

Rejected takeoff 13:03:19 UTC · KDEN runway 25 · 5,364 ft AGL · 68 kt GS
Rejected takeoff 13:03:19 UTC · KDEN runway 25 · 5,364 ft AGL · 68 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· KDEN