Squawk 7700 transmission — ASH4017

2026-07-16 01:11 UTC· KMAF → KIAH· UNITED AIRLINES INC· E75L

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ASH4017 (United Airlines) was operating from KMAF to KIAH on 2026-07-16. SkyMeter recorded a 7700 transponder transmission at 01:11 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: 10414 ft AGL, 265 kt GS. Approach stability score: 96/100. Scores in this band are observed on roughly 50% of approaches at this runway and represent the centerline of normal operations. 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)
  • SECURITY6/4240 2026-03-08 08:00Z – 2026-11-01 07:00Z SFC–180 ft

    SAN ANGELO, TX, Sunday, March 8, 2026 through Sunday, November 1, 2026 Local

    View FAA NOTAM →
  • SECURITY6/4030 2026-06-01 05:00Z – 2026-07-21 04:59Z SFC–400 ft

    AUSTIN, TX, Monday, June 1, 2026 through Monday, July 20, 2026 Local

    View FAA NOTAM →
  • SECURITY6/4031 2026-06-01 05:00Z – 2026-07-21 04:59Z SFC–400 ft

    AUSTIN, TX, Monday, June 1, 2026 through Monday, July 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

  • 10414 ft AGL at event
  • 265 kt ground speed
  • 0 fpm vertical
  • Approach stability 96/100
  • 4 kt wind
  • 4 kt crosswind component

Flight context

  • ASH4017
  • United Airlines
  • E75L
  • KMAF → KIAH
  • 2026-07-16 01:11 UTC

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