sensors Mode-S transponder
4B9E42
ICAO 24-bit transponder address · allocated to Turkey
Currently assigned to TC-GRB · AIRBUS A-330-200
- Hex
- 4B9E42
- Octal
- 22717102
- Decimal
- 4,955,714
- Country
- TR
- Tail
- TC-GRB
- Type
- A332
- Flights observed
- 21
- Distinct callsigns
- 10
- Country
- TR
- Last broadcast
- 28d ago
Last known position
Country allocation
The ICAO 24-bit address 4B9E42 falls within the block assigned to Turkey (TR) by ICAO Annex 10, Volume III. Every aircraft registered in Turkey 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 10 distinct
Recent flights last 21
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-19 | STW371 | AYT → KUF | Jul 19, 16:05 UTC | Jul 20, 02:05 UTC | 10h 0m |
| 2026-07-18 | STW305 | - | Jul 18, 16:10 UTC | Jul 18, 17:50 UTC | 1h 40m |
| 2026-07-17 | STW305 | - | Jul 17, 16:10 UTC | Jul 18, 01:39 UTC | 9h 30m |
| 2026-07-16 | STW133 | - | Jul 16, 13:25 UTC | Jul 16, 15:10 UTC | 1h 45m |
| 2026-07-14 | STW371 | - | Jul 14, 13:35 UTC | Jul 14, 23:45 UTC | 10h 9m |
| 2026-07-13 | STW171 | - | Jul 13, 17:55 UTC | Jul 14, 03:45 UTC | 9h 50m |
| 2026-07-13 | STW167 | - | Jul 13, 05:45 UTC | Jul 13, 16:00 UTC | 10h 15m |
| 2026-07-12 | STW372 | AYT → AYT | Jul 12, 17:50 UTC | Jul 13, 02:25 UTC | 8h 35m |
| 2026-07-12 | STW1322 | - | Jul 12, 10:05 UTC | Jul 12, 16:05 UTC | 6h 0m |
| 2026-07-10 | STW371 | - | Jul 10, 13:25 UTC | Jul 10, 23:00 UTC | 9h 35m |
| 2026-07-09 | STW305 | - | Jul 9, 17:00 UTC | Jul 10, 02:05 UTC | 9h 5m |
| 2026-07-09 | STW324 | - | Jul 9, 03:20 UTC | Jul 9, 14:45 UTC | 11h 25m |
| 2026-07-07 | STW133 | - | Jul 7, 13:40 UTC | Jul 7, 14:00 UTC | 20m |
| 2026-07-07 | STW134 | - | Jul 7, 00:25 UTC | Jul 7, 00:50 UTC | 25m |
| 2026-07-06 | STW133 | - | Jul 6, 13:30 UTC | Jul 6, 15:10 UTC | 1h 40m |
| 2026-07-05 | STW133 | - | Jul 5, 13:35 UTC | Jul 5, 15:20 UTC | 1h 45m |
| 2026-07-04 | STW133 | - | Jul 4, 13:50 UTC | Jul 5, 00:15 UTC | 10h 25m |
| 2026-07-03 | STW133 | - | Jul 3, 13:50 UTC | Jul 3, 15:35 UTC | 1h 45m |
| 2026-07-02 | STW133 | - | Jul 2, 14:10 UTC | Jul 3, 00:25 UTC | 10h 15m |
| 2026-07-01 | STW133 | - | Jul 1, 13:45 UTC | Jul 1, 15:35 UTC | 1h 50m |
| 2026-06-26 | STW8861 | - | Jun 26, 20:55 UTC | Jun 26, 23:00 UTC | 2h 5m |
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 TC-GRB page for operator, model, and routing details .