Apparatus

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sensors Mode-S transponder

4BD8C4

ICAO 24-bit transponder address · allocated to Turkey

Hex
4BD8C4
Octal
22754304
Decimal
4,970,692
Country
TR
No current signal · last broadcast 27d ago
Flights observed
190
Distinct callsigns
20
Country
TR
Last broadcast
27d ago

Last known position

Most recent position reported by Mode-S 4BD8C4.

Country allocation

The ICAO 24-bit address 4BD8C4 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
TKJ8JC - 6 2026-07-08
BOE881 - 5 2026-06-10
TKJ7WE Tarkim Havacilik 4 2026-07-24
TKJ7FC - 4 2026-07-10
TKJ5GR - 4 2026-07-12
TKJ2KL - 4 2026-07-10
TKJ7YA - 3 2026-07-07
TKJ7KQ - 3 2026-07-08
TKJ6YQ - 3 2026-07-22
TKJ6ET - 3 2026-07-07
TKJ2QA - 3 2026-07-05
TKJ9QU - 2 2026-07-11
TKJ9QF Tarkim Havacilik 2 2026-07-23
TKJ97P - 2 2026-07-17
TKJ94F - 2 2026-07-11
TKJ8UM Tarkim Havacilik 2 2026-06-26
TKJ8RE - 2 2026-07-13
TKJ8PU - 2 2026-07-05
TKJ8NP Tarkim Havacilik 2 2026-07-26
TKJ8CQ - 2 2026-07-10

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 TKJ8NP ASR → SAW Jul 26, 16:50 UTCJul 26, 19:50 UTC3h 0m
2026-07-26 TKJ6BL MLX → ESB Jul 26, 13:55 UTCJul 26, 15:15 UTC1h 20m
2026-07-26 TKJ6MP SAW → SJJ Jul 26, 10:50 UTCJul 26, 12:20 UTC1h 30m
2026-07-26 TKJ15W - Jul 26, 08:10 UTCJul 26, 09:10 UTC1h 0m
2026-07-26 TKJ7BV - Jul 26, 06:05 UTCJul 26, 06:50 UTC46m
2026-07-26 TKJ9KZ DLM → SAW Jul 26, 02:50 UTCJul 26, 03:45 UTC55m
2026-07-25 TKJ3BC TZX → ESB Jul 25, 21:25 UTCJul 25, 22:05 UTC40m
2026-07-25 TKJ8NP ASR → SAW Jul 25, 16:45 UTCJul 25, 19:40 UTC2h 55m
2026-07-25 TKJ7WK SAW → CGN Jul 25, 12:20 UTCJul 25, 15:15 UTC2h 55m
2026-07-25 TKJ94T - Jul 25, 07:45 UTCJul 25, 10:45 UTC3h 0m
2026-07-24 TKJ7WE CDG → SAW Jul 24, 21:15 UTCJul 25, 05:45 UTC8h 30m
2026-07-24 TKJ6UN - Jul 24, 15:40 UTCJul 24, 18:35 UTC2h 55m
2026-07-24 TKJ22D - Jul 24, 11:10 UTCJul 24, 14:15 UTC3h 5m
2026-07-24 TKJ9SH - Jul 24, 04:10 UTCJul 24, 07:55 UTC3h 45m
2026-07-23 TKJ3301 - Jul 23, 19:40 UTCJul 23, 21:25 UTC1h 45m
2026-07-23 TKJ3300 - Jul 23, 17:25 UTCJul 23, 18:40 UTC1h 15m
2026-07-23 TKJ3JX DIY → SAW Jul 23, 14:45 UTCJul 23, 15:15 UTC30m
2026-07-23 TKJ18A SAW → BJV Jul 23, 12:40 UTCJul 23, 12:55 UTC15m
2026-07-23 TKJ7AD TZX → SAW Jul 23, 08:45 UTCJul 23, 10:20 UTC1h 35m
2026-07-23 TKJ9QF SAW → TZX Jul 23, 06:20 UTCJul 23, 07:35 UTC1h 15m
2026-07-23 TKJ7GV - Jul 23, 02:55 UTCJul 23, 03:25 UTC30m
2026-07-22 TKJ5JV - Jul 22, 17:25 UTCJul 22, 18:45 UTC1h 20m
2026-07-22 TKJ1GQ - Jul 22, 14:10 UTCJul 22, 16:10 UTC2h 0m
2026-07-22 TKJ6YQ - Jul 22, 11:10 UTCJul 22, 12:05 UTC55m
2026-07-21 TKJ6YQ - Jul 21, 15:40 UTCJul 22, 12:05 UTC20h 25m
2026-07-21 TKJ4AD - Jul 21, 11:35 UTCJul 21, 14:05 UTC2h 30m
2026-07-20 TKJ5PY - Jul 20, 16:00 UTCJul 21, 10:25 UTC18h 25m
2026-07-20 TKJ5144 - Jul 20, 13:05 UTCJul 21, 10:25 UTC21h 20m
2026-07-20 TKJ5144 - Jul 20, 11:25 UTCJul 21, 10:25 UTC23h 0m
2026-07-20 TKJ5143 - Jul 20, 06:20 UTCJul 20, 09:30 UTC3h 10m
2026-07-20 TKJ3PT - Jul 20, 02:00 UTCJul 20, 02:30 UTC30m
2026-07-19 TKJ29W ESB → DLM Jul 19, 22:00 UTCJul 19, 22:30 UTC30m
2026-07-19 TKJ5397 - Jul 19, 19:35 UTCJul 19, 20:05 UTC30m
2026-07-19 TKJ93J - Jul 19, 06:55 UTCJul 19, 18:15 UTC11h 20m
2026-07-19 TKJ1TP - Jul 19, 05:00 UTCJul 19, 05:40 UTC40m
2026-07-18 TKJ6PW - Jul 18, 17:25 UTCJul 18, 19:55 UTC2h 30m
2026-07-18 TKJ4WN - Jul 18, 12:40 UTCJul 18, 15:50 UTC3h 10m
2026-07-18 TKJ8YL - Jul 18, 09:40 UTCJul 18, 10:15 UTC35m
2026-07-18 TKJ8VR ESB → ADB Jul 18, 05:40 UTCJul 18, 08:30 UTC2h 50m
2026-07-17 TKJ63G ECN → AYT Jul 17, 18:40 UTCJul 18, 04:20 UTC9h 41m
2026-07-17 TKJ63U - Jul 17, 14:15 UTCJul 17, 17:35 UTC3h 20m
2026-07-17 TKJ75U - Jul 17, 12:45 UTCJul 17, 13:15 UTC30m
2026-07-17 TKJ97P - Jul 17, 10:00 UTCJul 17, 10:30 UTC30m
2026-07-16 TKJ2XJ ESB → EDO Jul 16, 17:00 UTCJul 17, 08:59 UTC16h 0m
2026-07-16 TKJ870 - Jul 16, 14:40 UTCJul 16, 15:35 UTC55m
2026-07-16 TKJ869 - Jul 16, 12:40 UTCJul 16, 13:25 UTC45m
2026-07-16 TKJ5VN - Jul 16, 08:00 UTCJul 16, 10:55 UTC2h 55m
2026-07-16 TKJ5NK - Jul 16, 06:15 UTCJul 16, 06:45 UTC30m
2026-07-15 TKJ5JV - Jul 15, 17:25 UTCJul 15, 18:50 UTC1h 25m
2026-07-15 TKJ1GQ - Jul 15, 14:00 UTCJul 15, 16:10 UTC2h 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.

Mode-S 4BD8C4 frequently asked

What is Mode-S code 4BD8C4?
4BD8C4 is an ICAO 24-bit transponder address. Allocated to Turkey.
Where is Mode-S 4BD8C4 registered?
Mode-S code 4BD8C4 is allocated to Turkey (TR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4BD8C4 broadcasting right now?
No active broadcast right now. Last signal was 27d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4BD8C4, octal 22754304, decimal 4,970,692.
What flights does 4BD8C4 operate?
Mode-S 4BD8C4 has broadcast 20 distinct callsigns, including TKJ8JC, BOE881, TKJ7WE, TKJ7FC, TKJ5GR.