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sensors Mode-S transponder

88510A

ICAO 24-bit transponder address · allocated to Thailand

Currently assigned to HS-THJ · AIRBUS A-350-900

Hex
88510A
Octal
42050412
Decimal
8,933,642
Country
TH
Tail
HS-THJ
Type
A359
No current signal · last broadcast Jul 26, 22:30 UTC
Flights observed
279
Distinct callsigns
20
Country
TH
Last broadcast
Jul 26, 22:30 UTC

Last known position

Most recent position reported by Mode-S 88510A.

Country allocation

The ICAO 24-bit address 88510A 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
THA961 Thai Airways International 21 2026-07-21
THA960 Thai Airways International 19 2026-07-20
THA652 Thai Airways International 14 2026-07-22
THA653 Thai Airways International 13 2026-07-22
THA644 - 11 2026-06-28
THA435 Thai Airways International 11 2026-07-23
THA661 - 9 2026-07-14
THA660 - 9 2026-07-14
THA659 Thai Airways International 9 2026-07-23
THA645 - 8 2026-06-29
THA658 Thai Airways International 7 2026-07-22
THA436 Thai Airways International 7 2026-07-23
THA955 - 6 2026-07-08
THA954 - 6 2026-07-07
THA941 Thai Airways International 6 2026-07-26
THA940 Thai Airways International 6 2026-07-25
THA432 - 6 2026-07-16
THA318 Thai Airways International 6 2026-05-28
THA317 Thai Airways International 6 2026-05-28
THA415 - 5 2026-06-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 THA941 MXP → BKK Jul 26, 12:30 UTCJul 26, 22:30 UTC10h 0m
2026-07-25 THA940 BKK → MXP Jul 25, 18:20 UTCJul 26, 05:05 UTC10h 45m
2026-07-25 THA669 CAN → BKK Jul 25, 08:40 UTCJul 25, 11:20 UTC2h 40m
2026-07-25 THA668 BKK → CAN Jul 25, 05:55 UTCJul 25, 06:25 UTC30m
2026-07-25 THA668 BKK → CAN Jul 25, 03:55 UTCJul 25, 04:20 UTC25m
2026-07-24 THA941 MXP → BKK Jul 24, 12:30 UTCJul 24, 22:40 UTC10h 10m
2026-07-23 THA940 BKK → MXP Jul 23, 18:15 UTCJul 24, 05:10 UTC10h 55m
2026-07-23 THA436 CGK → BKK Jul 23, 12:35 UTCJul 23, 15:30 UTC2h 55m
2026-07-23 THA435 BKK → CGK Jul 23, 10:45 UTCJul 23, 11:05 UTC20m
2026-07-23 THA435 BKK → CGK Jul 23, 08:00 UTCJul 23, 10:10 UTC2h 10m
2026-07-23 THA659 ICN → BKK Jul 23, 00:55 UTCJul 23, 05:50 UTC4h 55m
2026-07-22 THA658 BKK → ICN Jul 22, 16:30 UTCJul 22, 21:25 UTC4h 55m
2026-07-22 THA653 ICN → BKK Jul 22, 11:10 UTCJul 22, 13:40 UTC2h 30m
2026-07-22 THA652 BKK → HKG Jul 22, 01:20 UTCJul 22, 04:35 UTC3h 15m
2026-07-21 THA961 ARN → BKK Jul 21, 12:00 UTCJul 21, 22:30 UTC10h 30m
2026-07-20 THA960 BKK → ARN Jul 20, 18:00 UTCJul 21, 05:35 UTC11h 34m
2026-07-20 THA436 CGK → BKK Jul 20, 12:15 UTCJul 20, 15:10 UTC2h 55m
2026-07-20 THA435 BKK → CGK Jul 20, 08:50 UTCJul 20, 10:40 UTC1h 50m
2026-07-20 THA435 BKK → CGK Jul 20, 07:40 UTCJul 20, 07:50 UTC10m
2026-07-19 THA961 ARN → BKK Jul 19, 12:10 UTCJul 19, 23:05 UTC10h 55m
2026-07-18 THA960 BKK → ARN Jul 18, 17:50 UTCJul 19, 05:00 UTC11h 10m
2026-07-18 THA615 - Jul 18, 14:30 UTCJul 18, 14:45 UTC15m
2026-07-18 THA615 - Jul 18, 10:50 UTCJul 18, 13:35 UTC2h 45m
2026-07-18 THA614 BKK → PEK Jul 18, 07:30 UTCJul 18, 08:05 UTC35m
2026-07-18 THA614 BKK → PEK Jul 18, 04:35 UTCJul 18, 04:55 UTC20m
2026-07-18 THA614 BKK → PEK Jul 18, 03:25 UTCJul 18, 03:35 UTC10m
2026-07-17 THA941 - Jul 17, 12:25 UTCJul 17, 22:49 UTC10h 25m
2026-07-16 THA940 - Jul 16, 18:29 UTCJul 17, 05:30 UTC11h 0m
2026-07-16 THA432 - Jul 16, 12:20 UTCJul 16, 13:05 UTC45m
2026-07-16 THA431 - Jul 16, 02:55 UTCJul 16, 03:10 UTC15m
2026-07-15 THA937 - Jul 15, 12:40 UTCJul 15, 23:35 UTC10h 55m
2026-07-14 THA936 - Jul 14, 23:10 UTCJul 15, 10:30 UTC11h 20m
2026-07-14 THA661 - Jul 14, 20:40 UTCJul 14, 20:50 UTC10m
2026-07-14 THA661 - Jul 14, 15:30 UTCJul 14, 18:45 UTC3h 15m
2026-07-14 THA660 - Jul 14, 06:25 UTCJul 14, 12:25 UTC6h 0m
2026-07-13 THA941 - Jul 13, 13:00 UTCJul 13, 23:25 UTC10h 25m
2026-07-12 THA940 - Jul 12, 18:20 UTCJul 13, 05:25 UTC11h 5m
2026-07-12 THA436 - Jul 12, 12:55 UTCJul 12, 15:55 UTC3h 0m
2026-07-12 THA435 - Jul 12, 09:45 UTCJul 12, 11:25 UTC1h 40m
2026-07-12 THA435 - Jul 12, 08:35 UTCJul 12, 08:45 UTC10m
2026-07-12 THA404 - Jul 12, 04:55 UTCJul 12, 07:01 UTC2h 5m
2026-07-12 THA403 - Jul 12, 02:30 UTCJul 12, 03:05 UTC35m
2026-07-12 THA403 - Jul 12, 01:20 UTCJul 12, 01:35 UTC15m
2026-07-11 THA941 - Jul 11, 12:30 UTCJul 11, 22:35 UTC10h 5m
2026-07-10 THA940 - Jul 10, 18:20 UTCJul 11, 05:25 UTC11h 6m
2026-07-10 THA436 - Jul 10, 12:20 UTCJul 10, 15:20 UTC3h 0m
2026-07-10 THA435 - Jul 10, 10:30 UTCJul 10, 10:45 UTC15m
2026-07-10 THA435 - Jul 10, 07:50 UTCJul 10, 09:55 UTC2h 5m
2026-07-10 THA659 - Jul 10, 02:35 UTCJul 10, 05:50 UTC3h 15m
2026-07-10 THA659 - Jul 10, 00:55 UTCJul 10, 01:35 UTC40m

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

Mode-S 88510A frequently asked

What is Mode-S code 88510A?
88510A is an ICAO 24-bit transponder address. Allocated to Thailand. Assigned to HS-THJ.
Where is Mode-S 88510A registered?
Mode-S code 88510A is allocated to Thailand (TH). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 88510A broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 88510A, octal 42050412, decimal 8,933,642.
What flights does 88510A operate?
Mode-S 88510A has broadcast 20 distinct callsigns, including THA961, THA960, THA652, THA653, THA644.