Return to field — UAL939

EGLL · 27R

2025-09-28 15:43 UTC· EGLL EGLL· UNITED AIRLINES INC· B772

UAL939 (United Airlines) was operating from EGLL to KSFO (San Francisco International Airport) on 2025-09-28. SkyMeter detected a return to field at London Heathrow Airport (EGLL) on runway 27R at 15:43 UTC. Peak cruise altitude FL321, turnaround area near Hathersage, GB. Approach stability score: 89/100. Scores in this band are observed on roughly 50% of approaches at this runway and represent the centerline of normal operations. METAR at the time reported 0 kt wind, 9,994 m visibility. Detection algorithm and known limitations: see SkyMeter methodology.

Pilot review data

  • Runway 27R
  • 32180 ft AGL at event
  • 553 kt ground speed
  • 0 fpm vertical
  • Approach stability 89/100
  • 0 kt wind
  • 0 kt crosswind component
  • 9,994 m visibility
  • EGLL 162220Z AUTO 25012KT 9999 NCD 16/09 Q1017

Flight context

  • UAL939
  • United Airlines
  • B772
  • EGLL → EGLL
  • 2025-09-28 15:43 UTC
  • EGLL runway 27R

All events on this flight

Return to field 15:43:35 UTC · EGLL runway 27R · 32,180 ft AGL · 553 kt GS
Squawk 7700 transmission 16:14:22 UTC · · 32,127 ft AGL · 462 kt GS
Squawk 7700 transmission 16:14:22 UTC · · 32,127 ft AGL · 462 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· EGLL