PRF720 had departed HKJK on 2025-12-23. SkyMeter recorded a 7500 transponder transmission at 17:24 UTC. Code 7500 indicates unlawful interference; in practice the overwhelming majority of observed transmissions are transponder glitches, mode-select knob errors, or transient ADS-B noise rather than a declared hijack. SkyMeter records the signal; it does not claim a hijack occurred. Trace data at the event: 5305 ft AGL, 12 kt GS. METAR at the time reported 8 kt wind, 7 kt crosswind component. Detection algorithm and known limitations: see SkyMeter methodology.
Pilot review data
- 5305 ft AGL at event
- 12 kt ground speed
- 0 fpm vertical
- 8 kt wind
- 7 kt crosswind component
Flight context
- PRF720
- AT75
- 2025-12-23 17:24 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