Squawk 7700 transmission — UAL2039

2026-03-26 19:46 UTC· KLAX KBZN· UNITED AIRLINES INC· A320

UAL2039 (United Airlines) was operating from KLAX to KBZN on 2026-03-26. SkyMeter recorded a 7700 transponder transmission at 19:46 UTC. Code 7700 indicates a general emergency declaration (e.g. engine, medical, smoke). A sustained transmission is normally accompanied by ATC priority handling. Trace data at the event: 36106 ft AGL, 502 kt GS. METAR at the time reported 9 kt wind, 5 kt crosswind component. Detection algorithm and known limitations: see SkyMeter methodology.

Active FAA TFR during this flight

Source: FAA TFR archive (hourly snapshot)
  • SECURITY5/0601 2025-11-30 19:00Z – 2026-05-31 18:59Z SFC–400 ft

    Los Angeles, CA, Sunday, November 30, 2025 through Sunday, May 31, 2026 Local

    View FAA NOTAM →

SkyMeter cross-referenced this flight against FAA-published TFRs that were active during its window and within its geographic bounding box. Overlap doesn't necessarily mean violation — the aircraft may have been outside the TFR’s precise polygon or flying under air-traffic-control coordination.

Pilot review data

  • 36106 ft AGL at event
  • 502 kt ground speed
  • 0 fpm vertical
  • 9 kt wind
  • 5 kt crosswind component

Flight context

  • UAL2039
  • United Airlines
  • A320
  • KLAX → KBZN
  • 2026-03-26 19:46 UTC

All events on this flight

Squawk 7700 transmission 19:46:21 UTC · · 36,106 ft AGL · 502 kt GS
Squawk 7700 transmission 19:46:25 UTC · · 36,106 ft AGL · 502 kt GS
Squawk 7700 transmission 19:46:25 UTC · · 36,106 ft AGL · 502 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