Go-around — ASA259

KBOS · 04L

2025-10-10 10:09 UTC· KSAN → KBOS· ALASKA AIRLINES INC· B39M

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ASA259 (Alaska Airlines) was operating from KSAN to KBOS on 2025-10-10. SkyMeter detected a go-around at General Edward Lawrence Logan International Airport (KBOS) on runway 04L at 10:09 UTC. Trace data at the event: 793 ft AGL, 144 kt GS. METAR at the time reported 4 kt wind, 4 kt crosswind component, 6,437 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 04L
  • 793 ft AGL at event
  • 144 kt ground speed
  • 0 fpm vertical
  • 4 kt wind
  • 4 kt crosswind component
  • 6,437 m visibility
  • SPECI KBOS 281324Z 02017KT 4SM -RA BR BKN008 OVC019 14/13 A2987 RMK AO2 P0004 T01390133

Flight context

  • ASA259
  • Alaska Airlines
  • B39M
  • KSAN → KBOS
  • 2025-10-10 10:09 UTC
  • KBOS runway 04L

All events on this flight

Go-around 10:09:05 UTC · KBOS runway 04L · 793 ft AGL · 144 kt GS
Go-around 10:09:09 UTC · KBOS runway 04L · 875 ft AGL · 146 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· KBOS