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sensors Mode-S transponder

8850AF

ICAO 24-bit transponder address · allocated to Thailand

Currently assigned to HS-TEO · AIRBUS A-330-300

Hex
8850AF
Octal
42050257
Decimal
8,933,551
Country
TH
Tail
HS-TEO
Type
A333
No current signal · last broadcast Jul 26, 21:35 UTC
Flights observed
334
Distinct callsigns
20
Country
TH
Last broadcast
Jul 26, 21:35 UTC

Last known position

Most recent position reported by Mode-S 8850AF.

Country allocation

The ICAO 24-bit address 8850AF falls within the block assigned to Thailand (TH) by ICAO Annex 10, Volume III. Every aircraft registered in Thailand receives a permanent address from this block at the time of registration; the address stays with the airframe even if the aircraft is re-registered to a different operator within the country.

Callsign history 20 distinct

Callsign Airline Flights Last seen
THA641 Thai Airways International 39 2026-07-26
THA649 - 38 2026-06-29
THA640 Thai Airways International 38 2026-07-26
THA648 - 29 2026-06-28
THA402 Thai Airways International 13 2026-05-26
THA401 Thai Airways International 13 2026-05-25
THA613 Thai Airways International 8 2026-06-10
THA601 - 8 2026-07-06
THA600 - 8 2026-07-06
THA668 - 7 2026-06-14
THA643 - 7 2026-07-07
THA642 - 7 2026-07-06
THA316 - 7 2026-07-16
THA315 - 7 2026-07-16
THA645 Thai Airways International 5 2026-07-20
THA644 - 5 2026-07-19
THA623 - 5 2026-07-14
THA669 - 4 2026-06-14
THA635 Thai Airways International 4 2026-05-20
THA634 Thai Airways International 4 2026-05-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 THA640 BKK → NRT Jul 26, 15:30 UTCJul 26, 21:25 UTC5h 55m
2026-07-26 THA304 RGN → BKK Jul 26, 12:35 UTCJul 26, 13:50 UTC1h 15m
2026-07-26 THA303 BKK → RGN Jul 26, 10:30 UTCJul 26, 11:40 UTC1h 10m
2026-07-26 THA641 NRT → BKK Jul 26, 01:55 UTCJul 26, 07:50 UTC5h 56m
2026-07-25 THA640 BKK → NRT Jul 25, 15:30 UTCJul 25, 21:25 UTC5h 55m
2026-07-25 THA641 NRT → BKK Jul 25, 03:15 UTCJul 25, 09:20 UTC6h 5m
2026-07-24 THA640 BKK → NRT Jul 24, 15:30 UTCJul 24, 21:10 UTC5h 40m
2026-07-24 THA641 NRT → BKK Jul 24, 02:00 UTCJul 24, 08:00 UTC6h 0m
2026-07-23 THA640 BKK → NRT Jul 23, 15:30 UTCJul 23, 21:15 UTC5h 45m
2026-07-23 THA641 NRT → BKK Jul 23, 02:15 UTCJul 23, 08:25 UTC6h 10m
2026-07-22 THA640 BKK → NRT Jul 22, 15:40 UTCJul 22, 21:30 UTC5h 50m
2026-07-22 THA641 NRT → BKK Jul 22, 02:40 UTCJul 22, 05:25 UTC2h 45m
2026-07-21 THA640 BKK → NRT Jul 21, 15:25 UTCJul 21, 21:25 UTC6h 0m
2026-07-21 THA641 NRT → BKK Jul 21, 02:25 UTCJul 21, 08:25 UTC6h 0m
2026-07-20 THA640 BKK → NRT Jul 20, 15:35 UTCJul 20, 21:30 UTC5h 55m
2026-07-20 THA645 NGO → BKK Jul 20, 07:15 UTCJul 20, 07:35 UTC20m
2026-07-20 THA645 NGO → BKK Jul 20, 02:20 UTCJul 20, 05:20 UTC3h 0m
2026-07-19 THA644 - Jul 19, 23:00 UTCJul 19, 23:10 UTC10m
2026-07-19 THA644 - Jul 19, 20:05 UTCJul 19, 21:55 UTC1h 50m
2026-07-19 THA304 - Jul 19, 12:35 UTCJul 19, 13:35 UTC1h 0m
2026-07-19 THA303 - Jul 19, 10:20 UTCJul 19, 11:25 UTC1h 5m
2026-07-19 THA645 NGO → BKK Jul 19, 07:20 UTCJul 19, 07:40 UTC20m
2026-07-19 THA645 NGO → BKK Jul 19, 03:40 UTCJul 19, 05:20 UTC1h 40m
2026-07-19 THA645 NGO → BKK Jul 19, 02:25 UTCJul 19, 02:35 UTC10m
2026-07-18 THA644 - Jul 18, 22:50 UTCJul 18, 23:15 UTC25m
2026-07-18 THA644 - Jul 18, 20:00 UTCJul 18, 21:50 UTC1h 50m
2026-07-18 THA644 - Jul 18, 17:45 UTCJul 18, 18:00 UTC15m
2026-07-18 THA641 - Jul 18, 08:00 UTCJul 18, 08:10 UTC10m
2026-07-18 THA641 - Jul 18, 02:40 UTCJul 18, 06:05 UTC3h 26m
2026-07-17 THA640 - Jul 17, 17:44 UTCJul 17, 21:50 UTC4h 5m
2026-07-17 THA640 - Jul 17, 15:29 UTCJul 17, 15:40 UTC10m
2026-07-17 THA633 - Jul 17, 09:45 UTCJul 17, 09:55 UTC10m
2026-07-17 THA633 - Jul 17, 06:54 UTCJul 17, 07:40 UTC45m
2026-07-17 THA632 - Jul 17, 03:59 UTCJul 17, 05:15 UTC1h 15m
2026-07-17 THA632 - Jul 17, 01:45 UTCJul 17, 01:59 UTC15m
2026-07-16 THA316 - Jul 16, 19:05 UTCJul 16, 22:45 UTC3h 40m
2026-07-16 THA315 - Jul 16, 13:20 UTCJul 16, 17:00 UTC3h 40m
2026-07-16 THA641 - Jul 16, 07:45 UTCJul 16, 08:05 UTC20m
2026-07-16 THA641 - Jul 16, 02:10 UTCJul 16, 05:35 UTC3h 25m
2026-07-15 THA640 - Jul 15, 17:35 UTCJul 15, 21:25 UTC3h 50m
2026-07-15 THA640 - Jul 15, 15:30 UTCJul 15, 15:45 UTC15m
2026-07-15 THA416 - Jul 15, 05:45 UTCJul 15, 07:35 UTC1h 50m
2026-07-15 THA415 - Jul 15, 02:20 UTCJul 15, 04:10 UTC1h 50m
2026-07-14 THA338 - Jul 14, 15:25 UTCJul 14, 22:45 UTC7h 19m
2026-07-14 THA623 - Jul 14, 09:20 UTCJul 14, 09:50 UTC30m
2026-07-14 THA623 - Jul 14, 04:25 UTCJul 14, 07:15 UTC2h 50m
2026-07-13 THA622 - Jul 13, 17:45 UTCJul 13, 23:10 UTC5h 25m
2026-07-13 THA623 - Jul 13, 08:01 UTCJul 13, 08:20 UTC20m
2026-07-13 THA623 - Jul 13, 03:10 UTCJul 13, 05:45 UTC2h 35m
2026-07-12 THA622 - Jul 12, 19:35 UTCJul 12, 22:45 UTC3h 10m

About Mode-S

A Mode-S transponder code (also called an "ICAO 24-bit address" or "hex code") is a 6-character hexadecimal identifier permanently assigned to an aircraft when it's first registered. Unlike callsigns (which change with each flight) or registrations (which can change if an aircraft is sold internationally), the Mode-S address stays with the airframe for the life of the aircraft in that country.

Every ADS-B transmission from an aircraft includes its Mode-S address, making it the most reliable way to identify a specific airframe. Flight-tracking services like Apparatus use the Mode-S address as the primary key for tying position broadcasts, callsigns, and ownership records together.

Prefer a tail-number view? See the HS-TEO page for operator, model, and routing details .

Mode-S 8850AF frequently asked

What is Mode-S code 8850AF?
8850AF is an ICAO 24-bit transponder address. Allocated to Thailand. Assigned to HS-TEO.
Where is Mode-S 8850AF registered?
Mode-S code 8850AF is allocated to Thailand (TH). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 8850AF broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:35 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 8850AF, octal 42050257, decimal 8,933,551.
What flights does 8850AF operate?
Mode-S 8850AF has broadcast 20 distinct callsigns, including THA641, THA649, THA640, THA648, THA402.