Apparatus

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sensors Mode-S transponder

885221

ICAO 24-bit transponder address · allocated to Thailand

Currently assigned to HS-TQA · BOEING 787-8 Dreamliner

Hex
885221
Octal
42051041
Decimal
8,933,921
Country
TH
Tail
HS-TQA
Type
B788
No current signal · last broadcast 19d ago
Flights observed
91
Distinct callsigns
12
Country
TH
Last broadcast
19d ago

Last known position

Most recent position reported by Mode-S 885221.

Country allocation

The ICAO 24-bit address 885221 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 12 distinct

Callsign Airline Flights Last seen
THA935 Thai Airways International 17 2026-05-03
THA934 Thai Airways International 15 2026-05-02
THA668 Thai Airways International 15 2026-05-05
THA669 Thai Airways International 13 2026-05-05
THA346 Thai Airways International 7 2026-05-09
THA345 Thai Airways International 7 2026-05-09
THA619 Thai Airways International 5 2026-05-09
THA321 Thai Airways International 5 2026-05-10
THA322 Thai Airways International 3 2026-05-10
THA618 Thai Airways International 2 2026-04-22
THA8464 - 1 2026-05-10
THA329 - 1 2026-04-12

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-10 THA8464 - May 10, 17:59 UTCMay 10, 18:39 UTC40m
2026-05-10 THA322 DAC → BKK May 10, 08:54 UTCMay 10, 11:00 UTC2h 5m
2026-05-10 THA321 BKK → DAC May 10, 04:00 UTCMay 10, 06:04 UTC2h 5m
2026-05-09 THA346 LHE → BKK May 9, 19:25 UTCMay 9, 23:00 UTC3h 35m
2026-05-09 THA345 BKK → LHE May 9, 13:35 UTCMay 9, 17:35 UTC4h 0m
2026-05-09 THA619 TFU → BKK May 9, 04:25 UTCMay 9, 11:05 UTC6h 40m
2026-05-08 THA346 LHE → BKK May 8, 19:10 UTCMay 8, 22:55 UTC3h 45m
2026-05-08 THA345 BKK → LHE May 8, 13:20 UTCMay 8, 17:20 UTC4h 0m
2026-05-05 THA669 CAN → BKK May 5, 10:20 UTCMay 5, 10:50 UTC30m
2026-05-05 THA668 BKK → CAN May 5, 05:50 UTCMay 5, 06:15 UTC25m
2026-05-05 THA668 BKK → CAN May 5, 03:55 UTCMay 5, 04:20 UTC25m
2026-05-04 THA346 LHE → BKK May 4, 21:50 UTCMay 4, 23:15 UTC1h 25m
2026-05-04 THA346 LHE → BKK May 4, 19:20 UTCMay 4, 21:40 UTC2h 20m
2026-05-04 THA345 BKK → LHE May 4, 13:30 UTCMay 4, 17:35 UTC4h 5m
2026-05-04 THA669 CAN → BKK May 4, 08:20 UTCMay 4, 11:05 UTC2h 45m
2026-05-04 THA668 BKK → CAN May 4, 05:40 UTCMay 4, 06:10 UTC30m
2026-05-04 THA668 BKK → CAN May 4, 03:45 UTCMay 4, 04:15 UTC30m
2026-05-03 THA935 BRU → BKK May 3, 11:40 UTCMay 3, 22:09 UTC10h 30m
2026-05-02 THA934 BKK → BRU May 2, 19:55 UTCMay 3, 07:20 UTC11h 24m
2026-05-02 THA669 CAN → BKK May 2, 10:20 UTCMay 2, 11:00 UTC40m
2026-05-02 THA668 BKK → CAN May 2, 03:55 UTCMay 2, 04:25 UTC30m
2026-05-01 THA935 BRU → BKK May 1, 11:45 UTCMay 1, 22:20 UTC10h 35m
2026-04-30 THA934 BKK → BRU Apr 30, 17:40 UTCMay 1, 05:35 UTC11h 55m
2026-04-30 THA619 TFU → BKK Apr 30, 04:10 UTCApr 30, 11:15 UTC7h 5m
2026-04-29 THA935 BRU → BKK Apr 29, 11:55 UTCApr 29, 22:15 UTC10h 20m
2026-04-28 THA934 BKK → BRU Apr 28, 17:40 UTCApr 29, 05:40 UTC12h 0m
2026-04-28 THA669 CAN → BKK Apr 28, 11:00 UTCApr 28, 11:45 UTC45m
2026-04-28 THA669 CAN → BKK Apr 28, 09:10 UTCApr 28, 09:20 UTC10m
2026-04-28 THA668 BKK → CAN Apr 28, 05:40 UTCApr 28, 05:55 UTC15m
2026-04-28 THA668 BKK → CAN Apr 28, 03:45 UTCApr 28, 04:15 UTC30m
2026-04-27 THA346 LHE → BKK Apr 27, 19:30 UTCApr 27, 23:15 UTC3h 45m
2026-04-27 THA345 BKK → LHE Apr 27, 13:15 UTCApr 27, 17:25 UTC4h 10m
2026-04-27 THA669 CAN → BKK Apr 27, 10:10 UTCApr 27, 10:40 UTC30m
2026-04-27 THA669 CAN → BKK Apr 27, 08:15 UTCApr 27, 08:25 UTC10m
2026-04-27 THA668 BKK → CAN Apr 27, 03:45 UTCApr 27, 04:15 UTC30m
2026-04-26 THA935 BRU → BKK Apr 26, 11:40 UTCApr 26, 22:05 UTC10h 25m
2026-04-25 THA934 BKK → BRU Apr 25, 17:45 UTCApr 26, 05:50 UTC12h 5m
2026-04-25 THA619 TFU → BKK Apr 25, 04:10 UTCApr 25, 11:15 UTC7h 5m
2026-04-24 THA619 TFU → BKK Apr 24, 03:30 UTCApr 24, 10:50 UTC7h 20m
2026-04-23 THA346 LHE → BKK Apr 23, 20:15 UTCApr 23, 23:55 UTC3h 40m
2026-04-23 THA345 BKK → LHE Apr 23, 13:15 UTCApr 23, 17:30 UTC4h 15m
2026-04-23 THA322 DAC → BKK Apr 23, 08:10 UTCApr 23, 10:15 UTC2h 5m
2026-04-23 THA321 BKK → DAC Apr 23, 03:55 UTCApr 23, 06:05 UTC2h 10m
2026-04-22 THA618 BKK → TFU Apr 22, 03:30 UTCApr 22, 10:50 UTC7h 20m
2026-04-21 THA935 BRU → BKK Apr 21, 12:05 UTCApr 21, 22:25 UTC10h 20m
2026-04-20 THA934 BKK → BRU Apr 20, 17:50 UTCApr 21, 05:30 UTC11h 40m
2026-04-20 THA669 CAN → BKK Apr 20, 10:35 UTCApr 20, 11:20 UTC45m
2026-04-20 THA668 BKK → CAN Apr 20, 03:50 UTCApr 20, 04:30 UTC40m
2026-04-19 THA346 LHE → BKK Apr 19, 19:40 UTCApr 19, 23:05 UTC3h 25m
2026-04-19 THA345 BKK → LHE Apr 19, 13:15 UTCApr 19, 17:20 UTC4h 5m

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-TQA page for operator, model, and routing details .

Mode-S 885221 frequently asked

What is Mode-S code 885221?
885221 is an ICAO 24-bit transponder address. Allocated to Thailand. Assigned to HS-TQA.
Where is Mode-S 885221 registered?
Mode-S code 885221 is allocated to Thailand (TH). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 885221 broadcasting right now?
No active broadcast right now. Last signal was 19d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 885221, octal 42051041, decimal 8,933,921.
What flights does 885221 operate?
Mode-S 885221 has broadcast 12 distinct callsigns, including THA935, THA934, THA668, THA669, THA346.