Squawk 7600 transmission — JJA138

2025-09-29 12:42 UTC· B738

JJA138 was inbound to RKSS on 2025-09-29. SkyMeter recorded a 7600 transponder transmission at 12:42 UTC. Code 7600 indicates a lost-comms / NORDO state; brief transmissions are often transient radio or transponder issues that resolve without crew action. Trace data at the event: 21793 ft AGL, 409 kt GS. Approach stability score: 93/100. 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 2 kt wind. Detection algorithm and known limitations: see SkyMeter methodology.

Pilot review data

  • 21793 ft AGL at event
  • 409 kt ground speed
  • 0 fpm vertical
  • Approach stability 93/100
  • 2 kt wind
  • 0 kt crosswind component

Flight context

  • JJA138
  • B738
  • 2025-09-29 12:42 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