sensors Mode-S transponder
4BD8C1
ICAO 24-bit transponder address · allocated to Turkey
- Hex
- 4BD8C1
- Octal
- 22754301
- Decimal
- 4,970,689
- Country
- TR
- Flights observed
- 239
- Distinct callsigns
- 20
- Country
- TR
- Last broadcast
- 23d ago
Last known position
Country allocation
The ICAO 24-bit address 4BD8C1 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 20 distinct
| Callsign | Airline | Flights | Last seen |
|---|---|---|---|
| TKJ50X | - | 6 | 2026-06-29 |
| BOE148 | - | 6 | 2026-05-25 |
| TKJ9DT | - | 5 | 2026-07-20 |
| TKJ94F | - | 4 | 2026-06-25 |
| TKJ6ET | Tarkim Havacilik | 4 | 2026-06-15 |
| TKJ574 | Tarkim Havacilik | 4 | 2026-07-20 |
| TKJ8NZ | - | 3 | 2026-07-12 |
| TKJ7YA | - | 3 | 2026-06-15 |
| TKJ7PZ | - | 3 | 2026-06-30 |
| TKJ5EF | - | 3 | 2026-06-24 |
| TKJ2XJ | - | 3 | 2026-07-15 |
| TKJ1PQ | - | 3 | 2026-07-12 |
| TKJ9TC | Tarkim Havacilik | 2 | 2026-07-19 |
| TKJ9ND | - | 2 | 2026-07-18 |
| TKJ9ME | - | 2 | 2026-07-24 |
| TKJ9AW | - | 2 | 2026-07-13 |
| TKJ97P | - | 2 | 2026-07-15 |
| TKJ8VB | - | 2 | 2026-06-28 |
| TKJ8KJ | - | 2 | 2026-07-05 |
| TKJ80T | - | 2 | 2026-07-11 |
Recent flights last 50
| Date | Flight | Route | Takeoff | Landing | Duration |
|---|---|---|---|---|---|
| 2026-07-26 | TKJ7WU | - | Jul 26, 17:40 UTC | Jul 26, 22:15 UTC | 4h 35m |
| 2026-07-26 | TKJ5225 | - | Jul 26, 14:35 UTC | Jul 26, 15:35 UTC | 1h 0m |
| 2026-07-26 | TKJ5224 | - | Jul 26, 12:10 UTC | Jul 26, 13:20 UTC | 1h 10m |
| 2026-07-26 | TKJ7XM | - | Jul 26, 09:00 UTC | Jul 26, 09:40 UTC | 40m |
| 2026-07-26 | TKJ4EJ | - | Jul 26, 06:00 UTC | Jul 26, 06:55 UTC | 56m |
| 2026-07-25 | TKJ5259 | ESB → SAW | Jul 25, 22:15 UTC | Jul 25, 22:40 UTC | 25m |
| 2026-07-25 | TKJ5258 | SAW → MLX | Jul 25, 19:35 UTC | Jul 25, 19:55 UTC | 20m |
| 2026-07-25 | TKJ60J | SAW → ADF | Jul 25, 12:20 UTC | Jul 25, 15:05 UTC | 2h 45m |
| 2026-07-25 | TKJ3TH | SAW → FRA | Jul 25, 07:40 UTC | Jul 25, 10:25 UTC | 2h 45m |
| 2026-07-24 | TKJ9ME | - | Jul 24, 14:35 UTC | Jul 24, 18:55 UTC | 4h 20m |
| 2026-07-24 | TKJ90U | BSL → SAW | Jul 24, 10:30 UTC | Jul 24, 12:55 UTC | 2h 25m |
| 2026-07-24 | TKJ51D | FCO → SAW | Jul 24, 06:30 UTC | Jul 24, 09:20 UTC | 2h 50m |
| 2026-07-23 | TKJ5292 | ESB → AYT | Jul 23, 16:40 UTC | Jul 23, 17:20 UTC | 40m |
| 2026-07-23 | TKJ5291 | EZS → SAW | Jul 23, 14:35 UTC | Jul 23, 14:55 UTC | 20m |
| 2026-07-23 | TKJ21K | - | Jul 23, 10:30 UTC | Jul 23, 12:55 UTC | 2h 25m |
| 2026-07-23 | TKJ9ZV | ESB → CDG | Jul 23, 05:50 UTC | Jul 23, 08:45 UTC | 2h 55m |
| 2026-07-22 | TKJ71U | - | Jul 22, 18:30 UTC | Jul 22, 19:35 UTC | 1h 5m |
| 2026-07-22 | TKJ2SV | - | Jul 22, 16:15 UTC | Jul 22, 17:20 UTC | 1h 5m |
| 2026-07-22 | TKJ8UY | - | Jul 22, 11:10 UTC | Jul 22, 13:45 UTC | 2h 35m |
| 2026-07-21 | TKJ9GE | - | Jul 21, 13:40 UTC | Jul 21, 17:00 UTC | 3h 20m |
| 2026-07-21 | TKJ14N | ESB → BER | Jul 21, 10:55 UTC | Jul 21, 12:00 UTC | 1h 5m |
| 2026-07-21 | TKJ87E | - | Jul 21, 08:25 UTC | Jul 21, 09:30 UTC | 1h 5m |
| 2026-07-20 | TKJ9DT | - | Jul 20, 10:45 UTC | Jul 21, 04:30 UTC | 17h 44m |
| 2026-07-20 | TKJ9DT | - | Jul 20, 06:20 UTC | Jul 21, 04:30 UTC | 22h 9m |
| 2026-07-20 | TKJ574 | FRU → ESB | Jul 20, 06:00 UTC | Jul 21, 04:15 UTC | 22h 15m |
| 2026-07-19 | TKJ574 | FRU → ESB | Jul 19, 22:30 UTC | Jul 20, 15:00 UTC | 16h 30m |
| 2026-07-19 | TKJ574 | FRU → ESB | Jul 19, 18:20 UTC | Jul 20, 15:00 UTC | 20h 40m |
| 2026-07-19 | TKJ9HJ | - | Jul 19, 16:25 UTC | Jul 20, 15:00 UTC | 22h 35m |
| 2026-07-19 | TKJ9TC | ESB → BER | Jul 19, 12:15 UTC | Jul 19, 14:55 UTC | 2h 40m |
| 2026-07-18 | TKJ9ND | - | Jul 18, 05:40 UTC | Jul 18, 06:15 UTC | 35m |
| 2026-07-18 | TKJ15E | - | Jul 18, 04:20 UTC | Jul 18, 04:30 UTC | 10m |
| 2026-07-17 | TKJ23P | - | Jul 17, 19:15 UTC | Jul 17, 19:45 UTC | 30m |
| 2026-07-17 | TKJ53R | - | Jul 17, 14:50 UTC | Jul 17, 18:05 UTC | 3h 15m |
| 2026-07-17 | TKJ30F | - | Jul 17, 13:29 UTC | Jul 17, 13:40 UTC | 10m |
| 2026-07-17 | TKJ1AP | - | Jul 17, 12:30 UTC | Jul 17, 12:50 UTC | 20m |
| 2026-07-17 | TKJ7SE | TZX → YEI | Jul 17, 10:15 UTC | Jul 17, 11:35 UTC | 1h 20m |
| 2026-07-17 | TKJ59R | - | Jul 17, 08:35 UTC | Jul 17, 08:45 UTC | 10m |
| 2026-07-17 | TKJ7ZB | - | Jul 17, 05:55 UTC | Jul 17, 06:15 UTC | 20m |
| 2026-07-17 | TKJ65N | - | Jul 17, 02:39 UTC | Jul 17, 04:10 UTC | 1h 30m |
| 2026-07-16 | TKJ54U | - | Jul 16, 23:40 UTC | Jul 17, 01:05 UTC | 1h 25m |
| 2026-07-16 | TKJ5JC | - | Jul 16, 18:55 UTC | Jul 16, 22:15 UTC | 3h 20m |
| 2026-07-16 | TKJ9DT | - | Jul 16, 07:15 UTC | Jul 16, 17:25 UTC | 10h 10m |
| 2026-07-16 | TKJ9MJ | - | Jul 16, 06:00 UTC | Jul 16, 06:10 UTC | 10m |
| 2026-07-16 | TKJ4AN | - | Jul 16, 01:30 UTC | Jul 16, 02:40 UTC | 1h 10m |
| 2026-07-15 | TKJ3TQ | - | Jul 15, 22:05 UTC | Jul 15, 22:55 UTC | 50m |
| 2026-07-15 | TKJ9TC | - | Jul 15, 13:30 UTC | Jul 15, 14:55 UTC | 1h 25m |
| 2026-07-15 | TKJ97P | - | Jul 15, 10:00 UTC | Jul 15, 10:35 UTC | 35m |
| 2026-07-15 | TKJ2XJ | - | Jul 15, 05:30 UTC | Jul 15, 08:55 UTC | 3h 25m |
| 2026-07-14 | TKJ9DT | - | Jul 14, 10:20 UTC | Jul 15, 04:25 UTC | 18h 4m |
| 2026-07-14 | TKJ9DT | - | Jul 14, 10:05 UTC | Jul 15, 04:25 UTC | 18h 19m |
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.