HB9EYA, radio and ADS-B
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Contact

SIA321

9V-SWBB77WSingapore AirlinesConfirmed contact

Date
4 Nov 2026
Entry
23:46:24
Exit
23:52:09
Duration
5 min 45 s
Received positions
462
Route resolution
From the callsign, confidence 60/100Per the routes referential of 28 Jul 2025.

Contact map

23:46 · 31,000 ft · 430 kt
  • Route resolved from the callsign: London Heathrow Airport (EGLL) to Singapore Changi Airport (WSSS), confidence 60/100. A deduction from the reference data, never a measured path.
  • Measured track: 39 received points, joined in time order. The real captured path, never fabricated.0 ft≥ 35,000 ft

'Entry' and 'exit' mark where the station began and stopped receiving the aircraft, at the edges of the antenna's range: not where the aircraft appeared or vanished.

Flight profile

0 ft20,000 ft40,000 ft0 kt250 kt500 kt0 min3 min6 min
AltitudeGround speedHover the chart to read the time, altitude and speed at that moment.

Start and end of contact

Start
4 Nov 2026, 23:46
Altitude
31,000 ft
Ground speed
not transmitted
Vertical rate
32 ft/min
Track
0°
Squawk
2244
End
4 Nov 2026, 23:52
Altitude
31,000 ft
Ground speed
441 kt
Vertical rate
0 ft/min
Track
122.4°
Squawk
2244