Squawk 7700 transmission — AAL278

2026-08-17 05:28 UTC· KPHL → EGPH· WILMINGTON TRUST CO TRUSTEE· B789

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AAL278 (Wilmington Trust) was operating from KPHL to EGPH on 2026-08-17. SkyMeter recorded a 7700 transponder transmission at 05:28 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: 27517 ft AGL, 456 kt GS. METAR at the time reported 4 kt wind, 4 kt crosswind component. Detection algorithm and known limitations: see SkyMeter methodology.

Active FAA TFR during this flight

Source: FAA TFR archive (hourly snapshot)
  • SECURITY5/2811 2025-10-20 12:00Z – 2026-10-20 12:00Z SFC–1,000 ft

    NEW YORK, NY, Monday, October 20, 2025 through Tuesday, October 20, 2026 Local

    View FAA NOTAM →
  • SECURITY6/2790 2026-07-02 22:30Z – 2026-09-15 03:59Z SFC–400 ft

    St. George, ME, Thursday, July 2, 2026 through Monday, September 14, 2026 Local

    View FAA NOTAM →
  • SECURITY6/4958 2026-08-16 18:25Z – 2026-08-17 00:25Z SFC–2,000 ft

    Morristown, NJ, Sunday, August 16, 2026 through Sunday, August 16, 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

  • 27517 ft AGL at event
  • 456 kt ground speed
  • 0 fpm vertical
  • 4 kt wind
  • 4 kt crosswind component

Flight context

  • AAL278
  • Wilmington Trust
  • B789
  • KPHL → EGPH
  • 2026-08-17 05:28 UTC

All events on this flight

Squawk 7700 transmission 05:28:16 UTC · · 27,517 ft AGL · 456 kt GS
Squawk 7700 transmission 05:28:16 UTC · · 27,517 ft AGL · 456 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