Diversion — UAL661

KN89 · 04

2026-04-17 18:59 UTC· KSNA → KN89· UNITED AIRLINES INC· B737

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UAL661 (United Airlines) was operating from KSNA to KEWR (Newark Liberty International Airport) on 2026-04-17. SkyMeter detected a diversion to Joseph Y Resnick Airport (KN89) on runway 04 at 18:59 UTC. Peak cruise altitude FL399, turnaround area near Fredonia, US. Approach stability score: 23/100. Scores below 50 occur on under 10% of approaches at this runway and indicate the v2 scorer flagged the approach as highly anomalous (three or more gates exceeded the runway's P90 envelope simultaneously). METAR at the time reported 6 kt wind, 4 kt crosswind component. Detection algorithm and known limitations: see SkyMeter methodology.

Pilot review data

  • Runway 04
  • 290 ft AGL at event
  • 120 kt ground speed
  • 0 fpm vertical
  • Approach stability 23/100
  • 6 kt wind
  • 4 kt crosswind component

Flight context

  • UAL661
  • United Airlines
  • B737
  • KSNA → KN89
  • 2026-04-17 18:59 UTC
  • KN89 runway 04

All events on this flight

Diversion 18:59:11 UTC · KN89 runway 04 · 290 ft AGL · 120 kt GS
Diversion 18:59:11 UTC · KN89 runway 04 · 290 ft AGL · 120 kt GS
Diversion 18:59:37 UTC · KN89 runway 04 · 290 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· KN89