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sensors Mode-S transponder

88511A

ICAO 24-bit transponder address · allocated to Thailand

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

Hex
88511A
Octal
42050432
Decimal
8,933,658
Country
TH
Tail
HS-THZ
Type
A359
No current signal · last broadcast Jul 26, 14:15 UTC
Flights observed
213
Distinct callsigns
20
Country
TH
Last broadcast
Jul 26, 14:15 UTC

Last known position

Most recent position reported by Mode-S 88511A.

Country allocation

The ICAO 24-bit address 88511A 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
THA900 Thai Airways International 31 2026-07-23
THA901 Thai Airways International 25 2026-07-23
THA925 Thai Airways International 16 2026-07-25
THA614 - 15 2026-07-11
THA924 Thai Airways International 14 2026-07-24
THA665 Thai Airways International 14 2026-07-26
THA615 - 12 2026-07-11
THA664 Thai Airways International 9 2026-07-26
THA461 - 8 2026-07-17
THA462 Thai Airways International 7 2026-07-17
THA471 Thai Airways International 6 2026-07-19
THA472 Thai Airways International 5 2026-07-20
THA465 Thai Airways International 5 2026-06-13
THA669 - 3 2026-07-16
THA668 - 3 2026-07-16
THA633 Thai Airways International 3 2026-04-16
THA476 - 3 2026-06-29
THA475 - 3 2026-06-28
THA466 - 3 2026-06-14
THA404 Thai Airways International 3 2026-06-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 THA665 PVG → BKK Jul 26, 05:15 UTCJul 26, 14:10 UTC8h 56m
2026-07-26 THA664 BKK → PVG Jul 26, 04:05 UTCJul 26, 04:25 UTC20m
2026-07-25 THA925 MUC → BKK Jul 25, 12:40 UTCJul 25, 22:45 UTC10h 5m
2026-07-24 THA924 BKK → MUC Jul 24, 18:15 UTCJul 25, 04:50 UTC10h 35m
2026-07-24 THA665 PVG → BKK Jul 24, 04:15 UTCJul 24, 14:50 UTC10h 35m
2026-07-23 THA901 IST → BKK Jul 23, 13:55 UTCJul 23, 22:25 UTC8h 30m
2026-07-23 THA900 BKK → IST Jul 23, 02:00 UTCJul 23, 02:20 UTC20m
2026-07-22 THA900 BKK → IST Jul 22, 17:15 UTCJul 23, 01:20 UTC8h 5m
2026-07-22 THA665 PVG → BKK Jul 22, 04:05 UTCJul 22, 14:25 UTC10h 20m
2026-07-21 THA901 IST → BKK Jul 21, 14:10 UTCJul 21, 22:25 UTC8h 15m
2026-07-20 THA900 - Jul 20, 17:30 UTCJul 20, 21:20 UTC3h 50m
2026-07-20 THA472 SYD → BKK Jul 20, 04:55 UTCJul 20, 14:05 UTC9h 10m
2026-07-19 THA471 BKK → SYD Jul 19, 23:40 UTCJul 20, 00:20 UTC40m
2026-07-19 THA471 BKK → SYD Jul 19, 16:05 UTCJul 19, 16:15 UTC10m
2026-07-19 THA472 SYD → BKK Jul 19, 04:35 UTCJul 19, 13:30 UTC8h 55m
2026-07-18 THA471 BKK → SYD Jul 18, 17:15 UTCJul 19, 00:05 UTC6h 50m
2026-07-18 THA471 BKK → SYD Jul 18, 15:40 UTCJul 18, 15:50 UTC10m
2026-07-18 THA665 - Jul 18, 13:15 UTCJul 18, 13:30 UTC15m
2026-07-18 THA664 - Jul 18, 05:15 UTCJul 18, 11:40 UTC6h 25m
2026-07-18 THA664 - Jul 18, 04:00 UTCJul 18, 04:15 UTC15m
2026-07-17 THA462 MEL → BKK Jul 17, 13:29 UTCJul 17, 22:20 UTC8h 50m
2026-07-17 THA461 - Jul 17, 02:50 UTCJul 17, 09:55 UTC7h 5m
2026-07-17 THA461 - Jul 17, 01:29 UTCJul 17, 01:45 UTC15m
2026-07-16 THA669 - Jul 16, 10:50 UTCJul 16, 11:30 UTC40m
2026-07-16 THA669 - Jul 16, 08:55 UTCJul 16, 09:15 UTC20m
2026-07-16 THA668 - Jul 16, 06:10 UTCJul 16, 06:25 UTC15m
2026-07-16 THA668 - Jul 16, 04:10 UTCJul 16, 04:20 UTC10m
2026-07-15 THA925 - Jul 15, 13:00 UTCJul 15, 23:10 UTC10h 10m
2026-07-14 THA924 BKK → MUC Jul 14, 18:10 UTCJul 15, 04:35 UTC10h 24m
2026-07-14 THA659 - Jul 14, 05:20 UTCJul 14, 05:35 UTC15m
2026-07-14 THA659 - Jul 14, 00:50 UTCJul 14, 03:30 UTC2h 40m
2026-07-13 THA658 - Jul 13, 18:50 UTCJul 13, 21:40 UTC2h 50m
2026-07-13 THA658 - Jul 13, 16:40 UTCJul 13, 16:50 UTC10m
2026-07-12 THA925 - Jul 12, 12:40 UTCJul 12, 22:35 UTC9h 55m
2026-07-11 THA924 - Jul 11, 18:10 UTCJul 12, 02:10 UTC8h 0m
2026-07-11 THA615 - Jul 11, 15:05 UTCJul 11, 15:20 UTC15m
2026-07-11 THA615 - Jul 11, 11:15 UTCJul 11, 14:05 UTC2h 50m
2026-07-11 THA614 - Jul 11, 03:20 UTCJul 11, 07:50 UTC4h 30m
2026-07-10 THA901 - Jul 10, 13:50 UTCJul 10, 22:15 UTC8h 26m
2026-07-09 THA900 - Jul 9, 17:10 UTCJul 9, 18:25 UTC1h 15m
2026-07-09 THA432 BKK → BKK Jul 9, 03:15 UTCJul 9, 12:50 UTC9h 35m
2026-07-08 THA901 - Jul 8, 21:30 UTCJul 8, 22:55 UTC1h 25m
2026-07-07 THA900 - Jul 7, 17:10 UTCJul 7, 21:00 UTC3h 50m
2026-07-07 THA615 - Jul 7, 11:05 UTCJul 7, 15:20 UTC4h 15m
2026-07-07 THA614 - Jul 7, 07:20 UTCJul 7, 07:45 UTC25m
2026-07-07 THA614 - Jul 7, 03:20 UTCJul 7, 05:00 UTC1h 40m
2026-07-06 THA937 - Jul 6, 13:05 UTCJul 6, 23:30 UTC10h 25m
2026-07-05 THA936 - Jul 5, 22:45 UTCJul 6, 10:30 UTC11h 45m
2026-07-05 THA613 - Jul 5, 03:55 UTCJul 5, 09:25 UTC5h 30m
2026-07-04 THA901 - Jul 4, 13:55 UTCJul 4, 22:25 UTC8h 30m

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

Mode-S 88511A frequently asked

What is Mode-S code 88511A?
88511A is an ICAO 24-bit transponder address. Allocated to Thailand. Assigned to HS-THZ.
Where is Mode-S 88511A registered?
Mode-S code 88511A is allocated to Thailand (TH). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 88511A broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 14:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 88511A, octal 42050432, decimal 8,933,658.
What flights does 88511A operate?
Mode-S 88511A has broadcast 20 distinct callsigns, including THA900, THA901, THA925, THA614, THA924.