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sensors Mode-S transponder

885171

ICAO 24-bit transponder address · allocated to Thailand

Currently assigned to HS-TKQ · BOEING 777-300ER

Hex
885171
Octal
42050561
Decimal
8,933,745
Country
TH
Tail
HS-TKQ
Type
B77W
Broadcasting now · callsign THA923 · 33,000 ft
Flights observed
229
Distinct callsigns
20
Country
TH
Last broadcast
Jul 26, 21:25 UTC

Current position

885171 is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 885171 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
THA971 Thai Airways International 15 2026-07-24
THA922 - 15 2026-07-09
THA683 Thai Airways International 15 2026-07-23
THA682 Thai Airways International 15 2026-07-22
THA600 - 15 2026-07-15
THA923 - 13 2026-07-09
THA638 - 12 2026-07-10
THA601 - 12 2026-07-15
THA970 Thai Airways International 11 2026-07-23
THA639 - 10 2026-07-10
THA951 - 9 2026-07-13
THA950 - 9 2026-07-12
THA930 Thai Airways International 8 2026-07-26
THA931 Thai Airways International 7 2026-07-20
THA921 - 7 2026-07-11
THA920 - 6 2026-07-10
THA917 Thai Airways International 6 2026-07-25
THA916 Thai Airways International 6 2026-07-25
THA673 Thai Airways International 4 2026-06-07
THA672 Thai Airways International 4 2026-06-07

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 THA930 BKK → CDG Jul 26, 17:35 UTCJul 26, 21:25 UTC3h 50m
2026-07-25 THA917 LHR → BKK Jul 25, 20:40 UTCJul 26, 07:40 UTC11h 1m
2026-07-25 THA916 BKK → LHR Jul 25, 06:25 UTCJul 25, 18:00 UTC11h 35m
2026-07-24 THA971 ZRH → BKK Jul 24, 11:50 UTCJul 24, 21:55 UTC10h 5m
2026-07-23 THA970 BKK → ZRH Jul 23, 18:35 UTCJul 24, 05:35 UTC11h 0m
2026-07-23 THA683 HND → BKK Jul 23, 01:55 UTCJul 23, 07:35 UTC5h 40m
2026-07-22 THA682 BKK → HND Jul 22, 16:10 UTCJul 22, 21:45 UTC5h 35m
2026-07-22 THA623 KIX → BKK Jul 22, 03:40 UTCJul 22, 05:25 UTC1h 45m
2026-07-21 THA622 BKK → KIX Jul 21, 17:35 UTCJul 21, 22:45 UTC5h 10m
2026-07-21 THA669 CAN → BKK Jul 21, 10:05 UTCJul 21, 10:35 UTC30m
2026-07-21 THA668 BKK → CAN Jul 21, 06:00 UTCJul 21, 06:25 UTC25m
2026-07-21 THA668 BKK → CAN Jul 21, 04:00 UTCJul 21, 04:25 UTC25m
2026-07-20 THA931 CDG → BKK Jul 20, 12:05 UTCJul 20, 22:45 UTC10h 40m
2026-07-19 THA930 - Jul 19, 17:30 UTCJul 20, 05:10 UTC11h 40m
2026-07-19 THA633 - Jul 19, 09:00 UTCJul 19, 09:15 UTC15m
2026-07-19 THA633 - Jul 19, 06:25 UTCJul 19, 06:55 UTC30m
2026-07-19 THA632 BKK → TPE Jul 19, 03:55 UTCJul 19, 05:00 UTC1h 5m
2026-07-19 THA632 BKK → TPE Jul 19, 01:45 UTCJul 19, 02:00 UTC15m
2026-07-18 THA931 - Jul 18, 12:15 UTCJul 18, 23:00 UTC10h 45m
2026-07-17 THA930 - Jul 17, 17:35 UTCJul 18, 05:00 UTC11h 26m
2026-07-15 THA601 - Jul 15, 06:35 UTCJul 15, 06:50 UTC15m
2026-07-15 THA600 - Jul 15, 04:15 UTCJul 15, 04:40 UTC25m
2026-07-15 THA600 - Jul 15, 02:05 UTCJul 15, 02:20 UTC15m
2026-07-13 THA951 - Jul 13, 12:50 UTCJul 13, 23:10 UTC10h 20m
2026-07-12 THA950 - Jul 12, 18:30 UTCJul 13, 05:25 UTC10h 55m
2026-07-12 THA635 - Jul 12, 14:01 UTCJul 12, 14:15 UTC15m
2026-07-12 THA635 - Jul 12, 11:05 UTCJul 12, 11:50 UTC45m
2026-07-12 THA634 - Jul 12, 08:25 UTCJul 12, 09:35 UTC1h 10m
2026-07-12 THA634 - Jul 12, 06:05 UTCJul 12, 06:15 UTC10m
2026-07-11 THA921 - Jul 11, 13:45 UTCJul 11, 23:40 UTC9h 55m
2026-07-10 THA920 - Jul 10, 17:05 UTCJul 11, 04:15 UTC11h 10m
2026-07-10 THA639 - Jul 10, 13:15 UTCJul 10, 13:50 UTC35m
2026-07-10 THA639 - Jul 10, 11:30 UTCJul 10, 11:40 UTC10m
2026-07-10 THA638 - Jul 10, 09:25 UTCJul 10, 09:45 UTC20m
2026-07-10 THA638 - Jul 10, 07:25 UTCJul 10, 07:50 UTC25m
2026-07-09 THA923 FRA → BKK Jul 9, 19:15 UTCJul 10, 05:25 UTC10h 10m
2026-07-09 THA922 - Jul 9, 05:50 UTCJul 9, 17:05 UTC11h 15m
2026-07-08 THA951 - Jul 8, 12:40 UTCJul 8, 22:15 UTC9h 35m
2026-07-07 THA950 - Jul 7, 18:35 UTCJul 8, 05:50 UTC11h 15m
2026-07-07 THA683 HND → BKK Jul 7, 02:10 UTCJul 7, 07:55 UTC5h 45m
2026-07-06 THA682 - Jul 6, 16:05 UTCJul 6, 21:40 UTC5h 35m
2026-07-05 THA917 LHR → BKK Jul 5, 20:40 UTCJul 6, 07:40 UTC11h 0m
2026-07-05 THA916 - Jul 5, 06:25 UTCJul 5, 08:50 UTC2h 25m
2026-07-04 THA661 - Jul 4, 15:35 UTCJul 4, 21:05 UTC5h 30m
2026-07-04 THA660 - Jul 4, 07:20 UTCJul 4, 12:55 UTC5h 35m
2026-07-03 THA923 FRA → BKK Jul 3, 19:15 UTCJul 4, 05:30 UTC10h 15m
2026-07-03 THA922 - Jul 3, 05:45 UTCJul 3, 16:50 UTC11h 5m
2026-07-02 THA921 - Jul 2, 13:45 UTCJul 3, 00:00 UTC10h 15m
2026-07-01 THA920 - Jul 1, 17:15 UTCJul 2, 04:05 UTC10h 50m
2026-07-01 THA639 - Jul 1, 11:40 UTCJul 1, 11:50 UTC10m

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

Mode-S 885171 frequently asked

What is Mode-S code 885171?
885171 is an ICAO 24-bit transponder address. Allocated to Thailand. Assigned to HS-TKQ.
Where is Mode-S 885171 registered?
Mode-S code 885171 is allocated to Thailand (TH). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 885171 broadcasting right now?
Yes. Mode-S 885171 is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 885171, octal 42050561, decimal 8,933,745.
What flights does 885171 operate?
Mode-S 885171 has broadcast 20 distinct callsigns, including THA971, THA922, THA683, THA682, THA600.