NSZ4257 was operating from ESSA to LEBB on 2026-06-23. SkyMeter recorded a 7700 transponder transmission at 13:42 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: 38860 ft AGL, 465 kt GS. Approach stability score: 59/100. Scores in this band occur on roughly 10-15% of approaches at this runway, with multiple gates outside the per-runway envelope. METAR at the time reported 8 kt wind, 7 kt crosswind component. Detection algorithm and known limitations: see SkyMeter methodology.
Pilot review data
- 38860 ft AGL at event
- 465 kt ground speed
- 0 fpm vertical
- Approach stability 59/100
- 8 kt wind
- 7 kt crosswind component
Flight context
- NSZ4257
- B738
- ESSA → LEBB
- 2026-06-23 13:42 UTC
All events on this flight
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