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sensors Mode-S transponder

885170

ICAO 24-bit transponder address · allocated to Thailand

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

Hex
885170
Octal
42050560
Decimal
8,933,744
Country
TH
Tail
HS-TKP
Type
B77W
No current signal · last broadcast Jul 26, 22:00 UTC
Flights observed
228
Distinct callsigns
20
Country
TH
Last broadcast
Jul 26, 22:00 UTC

Last known position

Most recent position reported by Mode-S 885170.

Country allocation

The ICAO 24-bit address 885170 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
THA951 Thai Airways International 19 2026-07-24
THA950 Thai Airways International 15 2026-07-23
THA917 Thai Airways International 13 2026-07-17
THA916 - 13 2026-07-17
THA638 - 13 2026-07-23
THA931 Thai Airways International 12 2026-07-21
THA639 Thai Airways International 10 2026-07-23
THA930 Thai Airways International 9 2026-07-20
THA921 - 9 2026-07-06
THA682 - 9 2026-07-14
THA970 Thai Airways International 8 2026-07-26
THA920 - 8 2026-07-05
THA683 - 8 2026-07-15
THA923 Thai Airways International 7 2026-07-25
THA922 Thai Airways International 7 2026-07-25
THA971 - 6 2026-07-12
THA601 Thai Airways International 6 2026-06-10
THA404 - 5 2026-06-29
THA403 - 5 2026-06-29
THA673 - 4 2026-06-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 THA970 BKK → ZRH Jul 26, 18:30 UTCJul 26, 22:00 UTC3h 30m
2026-07-25 THA923 FRA → BKK Jul 25, 19:15 UTCJul 26, 05:30 UTC10h 15m
2026-07-25 THA922 BKK → FRA Jul 25, 05:50 UTCJul 25, 07:10 UTC1h 20m
2026-07-24 THA951 CPH → BKK Jul 24, 12:50 UTCJul 24, 23:05 UTC10h 15m
2026-07-23 THA950 BKK → CPH Jul 23, 18:45 UTCJul 24, 05:50 UTC11h 5m
2026-07-23 THA639 HKG → BKK Jul 23, 13:20 UTCJul 23, 14:00 UTC40m
2026-07-23 THA639 HKG → BKK Jul 23, 11:40 UTCJul 23, 11:50 UTC10m
2026-07-23 THA638 - Jul 23, 09:30 UTCJul 23, 09:50 UTC20m
2026-07-23 THA638 - Jul 23, 07:25 UTCJul 23, 08:55 UTC1h 30m
2026-07-22 THA923 FRA → BKK Jul 22, 19:10 UTCJul 23, 05:00 UTC9h 50m
2026-07-21 THA922 BKK → FRA Jul 21, 22:05 UTCJul 22, 16:55 UTC18h 50m
2026-07-21 THA922 BKK → FRA Jul 21, 20:05 UTCJul 22, 16:55 UTC20h 50m
2026-07-21 THA931 CDG → BKK Jul 21, 19:00 UTCJul 22, 16:55 UTC21h 55m
2026-07-21 THA931 CDG → BKK Jul 21, 16:25 UTCJul 22, 16:00 UTC23h 35m
2026-07-21 THA931 CDG → BKK Jul 21, 14:05 UTCJul 22, 13:45 UTC23h 40m
2026-07-21 THA931 CDG → BKK Jul 21, 12:50 UTCJul 21, 23:10 UTC10h 20m
2026-07-20 THA930 BKK → CDG Jul 20, 17:30 UTCJul 20, 18:45 UTC1h 15m
2026-07-19 THA931 - Jul 19, 13:00 UTCJul 19, 23:25 UTC10h 25m
2026-07-18 THA930 - Jul 18, 17:25 UTCJul 19, 05:00 UTC11h 35m
2026-07-17 THA917 LHR → BKK Jul 17, 21:15 UTCJul 18, 08:20 UTC11h 6m
2026-07-17 THA916 - Jul 17, 06:25 UTCJul 17, 18:10 UTC11h 45m
2026-07-16 THA951 CPH → BKK Jul 16, 13:00 UTCJul 16, 23:20 UTC10h 20m
2026-07-15 THA950 - Jul 15, 18:30 UTCJul 16, 05:25 UTC10h 55m
2026-07-15 THA410 - Jul 15, 14:50 UTCJul 15, 15:15 UTC25m
2026-07-15 THA410 - Jul 15, 13:15 UTCJul 15, 13:45 UTC30m
2026-07-15 THA409 - Jul 15, 09:45 UTCJul 15, 11:35 UTC1h 50m
2026-07-15 THA683 - Jul 15, 06:40 UTCJul 15, 07:05 UTC25m
2026-07-15 THA683 - Jul 15, 01:35 UTCJul 15, 04:40 UTC3h 5m
2026-07-14 THA682 - Jul 14, 18:05 UTCJul 14, 21:50 UTC3h 45m
2026-07-14 THA682 - Jul 14, 16:05 UTCJul 14, 16:15 UTC10m
2026-07-14 THA641 - Jul 14, 07:15 UTCJul 14, 07:50 UTC35m
2026-07-14 THA641 - Jul 14, 02:05 UTCJul 14, 05:20 UTC3h 15m
2026-07-13 THA640 - Jul 13, 15:30 UTCJul 13, 21:20 UTC5h 50m
2026-07-13 THA633 - Jul 13, 09:55 UTCJul 13, 10:15 UTC20m
2026-07-13 THA633 - Jul 13, 07:05 UTCJul 13, 07:45 UTC40m
2026-07-13 THA632 - Jul 13, 04:10 UTCJul 13, 05:15 UTC1h 5m
2026-07-13 THA632 - Jul 13, 01:50 UTCJul 13, 02:01 UTC10m
2026-07-12 THA971 - Jul 12, 12:05 UTCJul 12, 21:55 UTC9h 50m
2026-07-11 THA970 - Jul 11, 18:25 UTCJul 12, 05:25 UTC11h 0m
2026-07-10 THA917 - Jul 10, 20:55 UTCJul 11, 07:35 UTC10h 40m
2026-07-10 THA916 - Jul 10, 06:20 UTCJul 10, 18:35 UTC12h 15m
2026-07-09 THA951 - Jul 9, 13:00 UTCJul 9, 23:10 UTC10h 10m
2026-07-08 THA950 - Jul 8, 18:40 UTCJul 8, 19:45 UTC1h 5m
2026-07-08 THA633 TPE → BKK Jul 8, 06:15 UTCJul 8, 09:15 UTC3h 0m
2026-07-08 THA632 - Jul 8, 01:50 UTCJul 8, 05:00 UTC3h 10m
2026-07-07 THA661 HND → BKK Jul 7, 15:20 UTCJul 7, 20:55 UTC5h 35m
2026-07-07 THA660 - Jul 7, 06:20 UTCJul 7, 11:55 UTC5h 35m
2026-07-06 THA921 - Jul 6, 13:05 UTCJul 6, 23:05 UTC10h 0m
2026-07-05 THA920 - Jul 5, 17:05 UTCJul 5, 18:15 UTC1h 10m
2026-07-05 THA638 - Jul 5, 09:20 UTCJul 5, 09:40 UTC20m

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

Mode-S 885170 frequently asked

What is Mode-S code 885170?
885170 is an ICAO 24-bit transponder address. Allocated to Thailand. Assigned to HS-TKP.
Where is Mode-S 885170 registered?
Mode-S code 885170 is allocated to Thailand (TH). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 885170 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:00 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 885170, octal 42050560, decimal 8,933,744.
What flights does 885170 operate?
Mode-S 885170 has broadcast 20 distinct callsigns, including THA951, THA950, THA917, THA916, THA638.