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
No current signal · last broadcast 1h ago
Flights observed
104
Distinct callsigns
20
Country
TH
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 885171.

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

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 THA931 CDG → BKK May 29, 12:10 UTCMay 29, 22:55 UTC10h 45m
2026-05-28 THA930 BKK → CDG May 28, 17:30 UTCMay 29, 05:35 UTC12h 5m
2026-05-28 THA639 HKG → BKK May 28, 11:50 UTCMay 28, 14:05 UTC2h 15m
2026-05-28 THA638 BKK → HKG May 28, 09:35 UTCMay 28, 09:55 UTC20m
2026-05-28 THA638 BKK → HKG May 28, 07:30 UTCMay 28, 09:00 UTC1h 30m
2026-05-27 THA971 ZRH → BKK May 27, 12:00 UTCMay 27, 22:05 UTC10h 5m
2026-05-26 THA970 BKK → ZRH May 26, 18:50 UTCMay 27, 06:15 UTC11h 25m
2026-05-26 THA683 HND → BKK May 26, 01:44 UTCMay 26, 07:29 UTC5h 45m
2026-05-25 THA682 BKK → HND May 25, 16:15 UTCMay 25, 21:45 UTC5h 29m
2026-05-24 THA923 FRA → BKK May 24, 19:25 UTCMay 25, 05:40 UTC10h 15m
2026-05-24 THA922 BKK → FRA May 24, 05:55 UTCMay 24, 17:00 UTC11h 5m
2026-05-23 THA971 ZRH → BKK May 23, 12:15 UTCMay 23, 22:25 UTC10h 11m
2026-05-22 THA970 BKK → ZRH May 22, 18:30 UTCMay 22, 22:25 UTC3h 55m
2026-05-22 THA683 HND → BKK May 22, 02:00 UTCMay 22, 07:45 UTC5h 45m
2026-05-21 THA682 BKK → HND May 21, 16:05 UTCMay 21, 21:25 UTC5h 20m
2026-05-20 THA921 FRA → BKK May 20, 23:10 UTCMay 20, 23:30 UTC20m
2026-05-20 THA921 FRA → BKK May 20, 13:05 UTCMay 20, 15:15 UTC2h 10m
2026-05-19 THA920 BKK → FRA May 19, 17:20 UTCMay 20, 04:25 UTC11h 5m
2026-05-17 THA971 ZRH → BKK May 17, 12:05 UTCMay 17, 22:25 UTC10h 20m
2026-05-16 THA970 BKK → ZRH May 16, 18:35 UTCMay 17, 05:55 UTC11h 20m
2026-05-15 THA917 LHR → BKK May 15, 21:00 UTCMay 16, 08:20 UTC11h 21m
2026-05-15 THA916 BKK → LHR May 15, 05:55 UTCMay 15, 06:50 UTC55m
2026-05-14 THA951 CPH → BKK May 14, 12:55 UTCMay 14, 23:25 UTC10h 30m
2026-05-13 THA950 BKK → CPH May 13, 18:55 UTCMay 14, 06:10 UTC11h 15m
2026-05-13 THA673 KIX → BKK May 13, 08:50 UTCMay 13, 14:05 UTC5h 15m
2026-05-13 THA672 BKK → KIX May 13, 01:45 UTCMay 13, 06:35 UTC4h 50m
2026-05-11 THA917 LHR → BKK May 11, 20:40 UTCMay 12, 06:50 UTC10h 10m
2026-05-11 THA916 BKK → LHR May 11, 06:00 UTCMay 11, 18:25 UTC12h 25m
2026-05-10 THA951 CPH → BKK May 10, 12:30 UTCMay 10, 22:25 UTC9h 55m
2026-05-09 THA950 BKK → CPH May 9, 18:30 UTCMay 9, 22:25 UTC3h 55m
2026-05-08 THA923 FRA → BKK May 8, 19:30 UTCMay 9, 05:45 UTC10h 15m
2026-05-08 THA922 BKK → FRA May 8, 05:44 UTCMay 8, 09:34 UTC3h 50m
2026-05-06 THA923 FRA → BKK May 6, 19:35 UTCMay 7, 04:10 UTC8h 35m
2026-05-06 THA922 BKK → FRA May 6, 05:55 UTCMay 6, 17:25 UTC11h 30m
2026-05-05 THA951 CPH → BKK May 5, 12:35 UTCMay 5, 22:55 UTC10h 20m
2026-05-04 THA950 BKK → CPH May 4, 18:25 UTCMay 4, 22:10 UTC3h 46m
2026-05-03 THA917 LHR → BKK May 3, 20:55 UTCMay 4, 08:05 UTC11h 10m
2026-05-03 THA916 BKK → LHR May 3, 06:00 UTCMay 3, 17:54 UTC11h 55m
2026-05-02 THA951 CPH → BKK May 2, 12:50 UTCMay 2, 22:45 UTC9h 55m
2026-05-01 THA950 BKK → CPH May 1, 18:20 UTCMay 1, 19:20 UTC1h 0m
2026-05-01 THA683 HND → BKK May 1, 02:00 UTCMay 1, 08:25 UTC6h 25m
2026-04-30 THA682 BKK → HND Apr 30, 16:15 UTCApr 30, 21:20 UTC5h 5m
2026-04-29 THA917 LHR → BKK Apr 29, 20:50 UTCApr 30, 07:35 UTC10h 44m
2026-04-29 THA916 BKK → LHR Apr 29, 06:19 UTCApr 29, 18:45 UTC12h 26m
2026-04-28 THA921 FRA → BKK Apr 28, 13:20 UTCApr 28, 22:45 UTC9h 25m
2026-04-27 THA920 BKK → FRA Apr 27, 17:30 UTCApr 28, 04:55 UTC11h 25m
2026-04-27 THA673 KIX → BKK Apr 27, 08:55 UTCApr 27, 14:25 UTC5h 30m
2026-04-27 THA672 BKK → KIX Apr 27, 01:40 UTCApr 27, 06:00 UTC4h 20m
2026-04-26 THA601 HKG → BKK Apr 26, 05:20 UTCApr 26, 07:45 UTC2h 25m
2026-04-26 THA600 BKK → HKG Apr 26, 03:35 UTCApr 26, 03:40 UTC5m

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?
No active broadcast right now. Last signal was 1h ago.
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, THA923.