Go-around — UAL2121

KSFO · 28L

2026-04-28 18:05 UTC· KSEA KSFO· UNITED AIRLINES INC· A320

UAL2121 (United Airlines) was operating from KSEA to KSFO on 2026-04-28. SkyMeter detected a go-around at San Francisco International Airport (KSFO) on runway 28L at 18:05 UTC. Trace data at the event: 277 ft AGL, 137 kt GS, 0 fpm vertical. METAR at the time reported 6 kt wind, 6 kt crosswind component, 16,093 m visibility. A go-around is a discontinued landing approach in which the pilot adds power and climbs back to a safe altitude before re-attempting the approach or proceeding to an alternate. It is a routine safety response, not an emergency, and is taught as the standard reaction to any unstable approach. Detection algorithm and known limitations: see SkyMeter methodology.

Pilot review data

  • Runway 28L
  • 277 ft AGL at event
  • 137 kt ground speed
  • 0 fpm vertical
  • 6 kt wind
  • 6 kt crosswind component
  • 16,093 m visibility
  • KSFO 201256Z 26007KT 10SM FEW003 BKN009 14/12 A2996 RMK AO2 SLP144 T01390122

Flight context

  • UAL2121
  • United Airlines
  • A320
  • KSEA → KSFO
  • 2026-04-28 18:05 UTC
  • KSFO runway 28L

All events on this flight

Go-around 18:05:42 UTC · KSFO runway 28L · 277 ft AGL · 137 kt GS
Go-around 18:05:42 UTC · KSFO runway 28L · 277 ft AGL · 137 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· KSFO