sensors Mode-S transponder
4B9E55
ICAO 24-bit transponder address · allocated to Turkey
Currently assigned to TC-GRU · BOEING 777-300
- Hex
- 4B9E55
- Octal
- 22717125
- Decimal
- 4,955,733
- Country
- TR
- Tail
- TC-GRU
- Type
- B773
- Flights observed
- 159
- Distinct callsigns
- 14
- Country
- TR
- Last broadcast
- 16h ago
Last known position
Country allocation
The ICAO 24-bit address 4B9E55 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 14 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| MSC781 | - | 42 | 2026-05-14 |
| MSC782 | - | 35 | 2026-05-13 |
| MSC785 | - | 26 | 2026-05-15 |
| MSC784 | - | 24 | 2026-05-13 |
| STW225 | South West Air Corporation | 6 | 2026-05-28 |
| STW001 | - | 5 | 2026-05-28 |
| STW226 | South West Air Corporation | 4 | 2026-05-29 |
| STW024 | South West Air Corporation | 4 | 2026-05-27 |
| STW023 | - | 4 | 2026-05-25 |
| STW125 | South West Air Corporation | 3 | 2026-05-23 |
| STW126 | South West Air Corporation | 2 | 2026-05-24 |
| STW002 | - | 2 | 2026-05-26 |
| STW8784 | - | 1 | 2026-05-16 |
| STW8001 | - | 1 | 2026-05-29 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-05-29 | STW8001 | - | May 29, 11:00 UTC | May 29, 13:35 UTC | 2h 35m |
| 2026-05-29 | STW226 | SVX → AYT | May 29, 05:10 UTC | May 29, 05:30 UTC | 20m |
| 2026-05-28 | STW225 | AYT → SVX | May 28, 18:05 UTC | May 29, 04:30 UTC | 10h 25m |
| 2026-05-28 | STW001 | - | May 28, 04:55 UTC | May 28, 14:30 UTC | 9h 35m |
| 2026-05-27 | STW024 | KZN → AYT | May 27, 15:15 UTC | May 28, 01:05 UTC | 9h 50m |
| 2026-05-27 | STW226 | SVX → AYT | May 27, 04:34 UTC | May 27, 04:55 UTC | 20m |
| 2026-05-26 | STW225 | AYT → SVX | May 26, 18:10 UTC | May 26, 20:00 UTC | 1h 50m |
| 2026-05-26 | STW002 | - | May 26, 15:00 UTC | May 26, 15:24 UTC | 25m |
| 2026-05-26 | STW001 | - | May 26, 05:34 UTC | May 26, 08:04 UTC | 2h 30m |
| 2026-05-26 | STW024 | KZN → AYT | May 26, 00:29 UTC | May 26, 00:49 UTC | 20m |
| 2026-05-25 | STW023 | - | May 25, 15:00 UTC | May 25, 21:24 UTC | 6h 24m |
| 2026-05-25 | STW226 | SVX → AYT | May 25, 04:40 UTC | May 25, 05:00 UTC | 20m |
| 2026-05-24 | STW225 | AYT → SVX | May 24, 18:15 UTC | May 24, 19:20 UTC | 1h 5m |
| 2026-05-24 | STW002 | - | May 24, 11:35 UTC | May 24, 14:10 UTC | 2h 35m |
| 2026-05-24 | STW001 | - | May 24, 05:05 UTC | May 24, 07:40 UTC | 2h 35m |
| 2026-05-24 | STW126 | SVX → AYT | May 24, 02:40 UTC | May 24, 03:05 UTC | 25m |
| 2026-05-23 | STW125 | AYT → SVX | May 23, 16:15 UTC | May 23, 17:30 UTC | 1h 15m |
| 2026-05-22 | STW125 | AYT → SVX | May 22, 17:45 UTC | May 23, 03:45 UTC | 10h 0m |
| 2026-05-21 | STW225 | AYT → SVX | May 21, 22:30 UTC | May 21, 22:40 UTC | 10m |
| 2026-05-21 | STW225 | AYT → SVX | May 21, 18:20 UTC | May 21, 20:00 UTC | 1h 40m |
| 2026-05-21 | STW001 | - | May 21, 05:00 UTC | May 21, 15:15 UTC | 10h 15m |
| 2026-05-21 | STW024 | KZN → AYT | May 21, 00:30 UTC | May 21, 00:45 UTC | 15m |
| 2026-05-20 | STW023 | - | May 20, 15:15 UTC | May 20, 16:30 UTC | 1h 15m |
| 2026-05-20 | STW226 | SVX → AYT | May 20, 04:25 UTC | May 20, 04:40 UTC | 16m |
| 2026-05-19 | STW225 | AYT → SVX | May 19, 18:00 UTC | May 20, 02:55 UTC | 8h 55m |
| 2026-05-19 | STW001 | - | May 19, 04:40 UTC | May 19, 14:40 UTC | 10h 0m |
| 2026-05-19 | STW024 | KZN → AYT | May 19, 00:40 UTC | May 19, 00:55 UTC | 15m |
| 2026-05-18 | STW023 | - | May 18, 14:55 UTC | May 19, 00:00 UTC | 9h 4m |
| 2026-05-17 | STW023 | - | May 17, 15:10 UTC | May 17, 16:15 UTC | 1h 5m |
| 2026-05-17 | STW126 | SVX → AYT | May 17, 02:40 UTC | May 17, 03:00 UTC | 20m |
| 2026-05-16 | STW125 | AYT → SVX | May 16, 16:10 UTC | May 16, 17:20 UTC | 1h 10m |
| 2026-05-16 | STW8784 | - | May 16, 03:10 UTC | May 16, 04:45 UTC | 1h 35m |
| 2026-05-15 | MSC785 | - | May 15, 05:20 UTC | May 16, 00:40 UTC | 19h 19m |
| 2026-05-15 | MSC785 | - | May 15, 05:05 UTC | May 16, 00:40 UTC | 19h 34m |
| 2026-05-14 | MSC781 | - | May 14, 06:30 UTC | May 15, 00:05 UTC | 17h 35m |
| 2026-05-13 | MSC781 | - | May 13, 23:20 UTC | May 14, 23:15 UTC | 23h 55m |
| 2026-05-13 | MSC782 | - | May 13, 21:20 UTC | May 14, 21:15 UTC | 23h 55m |
| 2026-05-13 | MSC785 | - | May 13, 20:20 UTC | May 14, 08:20 UTC | 12h 0m |
| 2026-05-13 | MSC785 | - | May 13, 07:20 UTC | May 14, 07:15 UTC | 23h 55m |
| 2026-05-13 | MSC784 | - | May 13, 05:20 UTC | May 13, 23:35 UTC | 18h 15m |
| 2026-05-12 | MSC784 | - | May 12, 23:20 UTC | May 13, 23:15 UTC | 23h 55m |
| 2026-05-12 | MSC781 | - | May 12, 21:20 UTC | May 13, 21:15 UTC | 23h 55m |
| 2026-05-12 | MSC781 | - | May 12, 20:20 UTC | May 13, 08:10 UTC | 11h 50m |
| 2026-05-12 | MSC781 | - | May 12, 07:20 UTC | May 13, 07:15 UTC | 23h 55m |
| 2026-05-12 | MSC781 | - | May 12, 05:35 UTC | May 13, 00:10 UTC | 18h 35m |
| 2026-05-11 | MSC782 | - | May 11, 21:20 UTC | May 12, 21:15 UTC | 23h 55m |
| 2026-05-11 | MSC782 | - | May 11, 20:50 UTC | May 12, 08:20 UTC | 11h 30m |
| 2026-05-11 | MSC785 | - | May 11, 07:30 UTC | May 12, 07:15 UTC | 23h 45m |
| 2026-05-10 | MSC781 | - | May 10, 23:19 UTC | May 11, 22:15 UTC | 22h 56m |
| 2026-05-10 | MSC781 | - | May 10, 21:44 UTC | May 11, 21:20 UTC | 23h 36m |
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-GRU page for operator, model, and routing details .