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sensors Mode-S transponder

88510C

ICAO 24-bit transponder address · allocated to Thailand

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

Hex
88510C
Octal
42050414
Decimal
8,933,644
Country
TH
Tail
HS-THL
Type
A359
No current signal · last broadcast Jul 26, 21:40 UTC
Flights observed
271
Distinct callsigns
20
Country
TH
Last broadcast
Jul 26, 21:40 UTC

Last known position

Most recent position reported by Mode-S 88510C.

Country allocation

The ICAO 24-bit address 88510C 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
THA954 Thai Airways International 17 2026-07-21
THA955 Thai Airways International 15 2026-07-22
THA409 - 14 2026-07-17
THA410 - 13 2026-07-17
THA661 - 11 2026-07-11
THA660 - 11 2026-07-11
THA658 Thai Airways International 11 2026-07-26
THA644 Thai Airways International 10 2026-06-11
THA659 Thai Airways International 9 2026-07-26
THA432 Thai Airways International 9 2026-07-25
THA656 Thai Airways International 7 2026-07-03
THA645 - 7 2026-06-12
THA403 - 7 2026-07-15
THA960 - 6 2026-06-21
THA639 Thai Airways International 6 2026-05-21
THA638 Thai Airways International 6 2026-05-21
THA435 - 6 2026-07-15
THA404 - 6 2026-07-15
THA961 - 5 2026-06-22
THA941 - 5 2026-07-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 THA658 BKK → ICN Jul 26, 16:30 UTCJul 26, 21:35 UTC5h 5m
2026-07-26 THA659 ICN → BKK Jul 26, 00:50 UTCJul 26, 05:40 UTC4h 50m
2026-07-25 THA658 BKK → ICN Jul 25, 20:50 UTCJul 25, 21:20 UTC30m
2026-07-25 THA658 BKK → ICN Jul 25, 16:40 UTCJul 25, 18:10 UTC1h 30m
2026-07-25 THA432 DPS → BKK Jul 25, 03:00 UTCJul 25, 12:55 UTC9h 55m
2026-07-24 THA901 IST → BKK Jul 24, 13:55 UTCJul 24, 22:20 UTC8h 25m
2026-07-23 THA900 BKK → IST Jul 23, 17:15 UTCJul 24, 02:30 UTC9h 15m
2026-07-23 THA653 ICN → BKK Jul 23, 08:15 UTCJul 23, 13:15 UTC5h 0m
2026-07-23 THA652 BKK → HKG Jul 23, 01:30 UTCJul 23, 06:40 UTC5h 10m
2026-07-22 THA955 OSL → BKK Jul 22, 12:35 UTCJul 22, 23:20 UTC10h 45m
2026-07-21 THA954 BKK → OSL Jul 21, 18:00 UTCJul 22, 05:25 UTC11h 25m
2026-07-20 THA659 - Jul 20, 05:50 UTCJul 20, 06:10 UTC20m
2026-07-20 THA659 - Jul 20, 01:15 UTCJul 20, 03:55 UTC2h 40m
2026-07-19 THA658 - Jul 19, 18:40 UTCJul 19, 21:30 UTC2h 50m
2026-07-19 THA658 - Jul 19, 16:30 UTCJul 19, 16:40 UTC10m
2026-07-19 THA432 DPS → BKK Jul 19, 12:20 UTCJul 19, 12:40 UTC20m
2026-07-19 THA432 DPS → BKK Jul 19, 11:00 UTCJul 19, 11:15 UTC15m
2026-07-19 THA431 - Jul 19, 03:00 UTCJul 19, 03:10 UTC10m
2026-07-18 THA955 OSL → BKK Jul 18, 12:30 UTCJul 18, 23:30 UTC11h 0m
2026-07-17 THA954 BKK → OSL Jul 17, 17:40 UTCJul 18, 05:15 UTC11h 36m
2026-07-17 THA410 - Jul 17, 13:29 UTCJul 17, 15:29 UTC2h 0m
2026-07-17 THA409 - Jul 17, 11:00 UTCJul 17, 11:35 UTC35m
2026-07-17 THA409 - Jul 17, 09:45 UTCJul 17, 09:55 UTC10m
2026-07-17 THA416 - Jul 17, 05:35 UTCJul 17, 07:25 UTC1h 50m
2026-07-17 THA415 BKK → KUL Jul 17, 02:20 UTCJul 17, 03:59 UTC1h 40m
2026-07-16 THA941 - Jul 16, 12:34 UTCJul 16, 22:49 UTC10h 15m
2026-07-15 THA940 - Jul 15, 18:20 UTCJul 16, 05:10 UTC10h 50m
2026-07-15 THA436 - Jul 15, 15:55 UTCJul 15, 16:20 UTC25m
2026-07-15 THA436 - Jul 15, 13:20 UTCJul 15, 14:45 UTC1h 25m
2026-07-15 THA435 - Jul 15, 11:25 UTCJul 15, 11:45 UTC20m
2026-07-15 THA435 - Jul 15, 10:10 UTCJul 15, 10:35 UTC25m
2026-07-15 THA435 - Jul 15, 08:45 UTCJul 15, 08:55 UTC10m
2026-07-15 THA404 - Jul 15, 04:55 UTCJul 15, 06:50 UTC1h 55m
2026-07-15 THA403 - Jul 15, 02:35 UTCJul 15, 03:15 UTC40m
2026-07-15 THA403 - Jul 15, 01:25 UTCJul 15, 01:40 UTC15m
2026-07-14 THA901 - Jul 14, 14:00 UTCJul 14, 22:35 UTC8h 35m
2026-07-13 THA900 - Jul 13, 17:10 UTCJul 13, 18:20 UTC1h 10m
2026-07-13 THA669 - Jul 13, 10:25 UTCJul 13, 10:45 UTC20m
2026-07-13 THA668 - Jul 13, 05:55 UTCJul 13, 06:05 UTC10m
2026-07-13 THA668 - Jul 13, 03:50 UTCJul 13, 04:10 UTC20m
2026-07-12 THA937 - Jul 12, 12:40 UTCJul 12, 23:05 UTC10h 25m
2026-07-12 THA936 - Jul 12, 09:45 UTCJul 12, 10:15 UTC30m
2026-07-11 THA936 - Jul 11, 22:40 UTCJul 12, 09:40 UTC11h 0m
2026-07-11 THA661 - Jul 11, 20:45 UTCJul 11, 21:05 UTC20m
2026-07-11 THA661 - Jul 11, 15:35 UTCJul 11, 18:40 UTC3h 5m
2026-07-11 THA660 - Jul 11, 07:40 UTCJul 11, 12:20 UTC4h 40m
2026-07-11 THA660 - Jul 11, 06:25 UTCJul 11, 06:40 UTC15m
2026-07-10 THA941 MXP → BKK Jul 10, 13:15 UTCJul 10, 23:25 UTC10h 10m
2026-07-09 THA940 - Jul 9, 18:15 UTCJul 10, 05:50 UTC11h 35m
2026-07-09 THA410 - Jul 9, 13:05 UTCJul 9, 15:00 UTC1h 55m

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

Mode-S 88510C frequently asked

What is Mode-S code 88510C?
88510C is an ICAO 24-bit transponder address. Allocated to Thailand. Assigned to HS-THL.
Where is Mode-S 88510C registered?
Mode-S code 88510C is allocated to Thailand (TH). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 88510C broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:40 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 88510C, octal 42050414, decimal 8,933,644.
What flights does 88510C operate?
Mode-S 88510C has broadcast 20 distinct callsigns, including THA954, THA955, THA409, THA410, THA661.