sensors Mode-S transponder
881BB4
ICAO 24-bit transponder address · allocated to Thailand
Currently assigned to F20K-8/64
- Hex
- 881BB4
- Octal
- 42015664
- Decimal
- 8,919,988
- Country
- TH
- Tail
- F20K-8/64
- Type
- DA42
- Flights observed
- 28
- Distinct callsigns
- 12
- Country
- TH
- Last broadcast
- 15d ago
Last known position
Country allocation
The ICAO 24-bit address 881BB4 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 12 distinct
Recent flights last 28
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-24 | DECIBELL | - | Jul 24, 04:05 UTC | Jul 24, 04:50 UTC | 45m |
| 2026-07-23 | TALENT | - | Jul 23, 02:45 UTC | Jul 23, 03:40 UTC | 55m |
| 2026-07-22 | DECIBELL | - | Jul 22, 04:15 UTC | Jul 22, 05:05 UTC | 50m |
| 2026-07-21 | TALENT | - | Jul 21, 06:35 UTC | Jul 21, 06:50 UTC | 15m |
| 2026-07-21 | FORDEC | - | Jul 21, 01:35 UTC | Jul 21, 02:15 UTC | 40m |
| 2026-07-17 | MARSMELL | - | Jul 17, 01:20 UTC | Jul 17, 01:55 UTC | 35m |
| 2026-07-15 | FORDEC | - | Jul 15, 04:35 UTC | Jul 15, 05:00 UTC | 25m |
| 2026-07-09 | CHRT304 | - | Jul 9, 07:35 UTC | Jul 9, 07:45 UTC | 10m |
| 2026-07-09 | DK | - | Jul 9, 02:50 UTC | Jul 9, 03:30 UTC | 40m |
| 2026-07-08 | MARSHMEL | - | Jul 8, 06:00 UTC | Jul 8, 06:35 UTC | 35m |
| 2026-07-08 | MARSHMEL | - | Jul 8, 02:40 UTC | Jul 8, 03:20 UTC | 40m |
| 2026-07-07 | TOPAZ | - | Jul 7, 05:25 UTC | Jul 7, 06:05 UTC | 40m |
| 2026-07-06 | TOPAZ | - | Jul 6, 05:30 UTC | Jul 6, 06:20 UTC | 50m |
| 2026-07-06 | TOPAZ | - | Jul 6, 02:40 UTC | Jul 6, 03:25 UTC | 45m |
| 2026-07-03 | TOPAZ | - | Jul 3, 02:35 UTC | Jul 3, 03:00 UTC | 25m |
| 2026-07-02 | ARTHUR | - | Jul 2, 05:05 UTC | Jul 2, 05:45 UTC | 40m |
| 2026-07-01 | NAKATA | - | Jul 1, 04:20 UTC | Jul 1, 04:55 UTC | 35m |
| 2026-07-01 | NAKATA | - | Jul 1, 01:20 UTC | Jul 1, 02:05 UTC | 45m |
| 2026-06-30 | ARTHUR | - | Jun 30, 04:30 UTC | Jun 30, 05:25 UTC | 55m |
| 2026-06-30 | ARTHUR | - | Jun 30, 02:00 UTC | Jun 30, 02:30 UTC | 30m |
| 2026-06-26 | NAKATA | - | Jun 26, 02:44 UTC | Jun 26, 03:45 UTC | 1h 0m |
| 2026-06-25 | NAKATA | - | Jun 25, 04:29 UTC | Jun 25, 05:20 UTC | 50m |
| 2026-06-25 | DECIBELL | - | Jun 25, 01:40 UTC | Jun 25, 02:19 UTC | 40m |
| 2026-06-24 | DECIBELL | - | Jun 24, 04:24 UTC | Jun 24, 04:59 UTC | 35m |
| 2026-06-24 | NAKATA | - | Jun 24, 01:30 UTC | Jun 24, 02:20 UTC | 50m |
| 2026-06-23 | BUNBUN | - | Jun 23, 04:19 UTC | Jun 23, 04:50 UTC | 30m |
| 2026-06-22 | RB937 | KDT → KDT | Jun 22, 07:34 UTC | Jun 22, 07:45 UTC | 10m |
| 2026-06-19 | RB937 | - | Jun 19, 06:04 UTC | Jun 19, 06:14 UTC | 10m |
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 F20K-8/64 page for operator, model, and routing details .