Stall warning — UAL770

2026-05-20 13:19 UTC· LEBL KORD· UNITED AIRLINES INC· B788

UAL770 (United Airlines) was operating from LEBL to KORD on 2026-05-20. SkyMeter detected a stall warning at 13:19 UTC. Trace data at the event: 844 ft AGL, 166 kt GS. METAR at the time reported 6 kt wind, 5 kt crosswind component. A stall flag is raised when the inferred angle of attack and observed airspeed are consistent with a stalled wing. Stall events on general-aviation trainer aircraft are predominantly stall-recognition practice during primary flight training, not safety-of-flight incidents. Detection algorithm and known limitations: see SkyMeter methodology.

Active FAA TFR during this flight

Source: FAA TFR archive (hourly snapshot)
  • SECURITY6/0903 2026-05-19 12:00Z – 2026-05-21 20:00Z SFC–400 ft

    East Marion, NY, Tuesday, May 19, 2026 through Thursday, May 21, 2026 Local

    View FAA NOTAM →
  • VIP6/1271 2026-05-20 13:30Z – 2026-05-20 18:30Z SFC–17,999 ft

    New London, CT, Wednesday, May 20, 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

  • 844 ft AGL at event
  • 166 kt ground speed
  • 0 fpm vertical
  • 6 kt wind
  • 5 kt crosswind component

Flight context

  • UAL770
  • United Airlines
  • B788
  • LEBL → KORD
  • 2026-05-20 13:19 UTC

All events on this flight

Stall warning 13:19:00 UTC · · 844 ft AGL · 166 kt GS
Stall warning 13:19:00 UTC · · 844 ft AGL · 166 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