Apparatus

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sensors Mode-S transponder

4BA904

ICAO 24-bit transponder address · allocated to Turkey

Currently assigned to TC-JHD · BOEING 737-800

Hex
4BA904
Octal
22724404
Decimal
4,958,468
Country
TR
Tail
TC-JHD
Type
B738
No current signal · last broadcast 3h ago
Flights observed
145
Distinct callsigns
20
Country
TR
Last broadcast
3h ago

Last known position

Most recent position reported by Mode-S 4BA904.

Country allocation

The ICAO 24-bit address 4BA904 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
TKJ1ML Tarkim Havacilik 11 2026-05-29
TKJ3SY Tarkim Havacilik 7 2026-05-30
TKJ8MY - 5 2026-05-06
TKJ1ZP Tarkim Havacilik 4 2026-04-25
TKJ7AJ Tarkim Havacilik 3 2026-05-17
TKJ6656 - 3 2026-05-07
TKJ3XZ Tarkim Havacilik 3 2026-05-06
TKJ2HX - 3 2026-06-07
TKJ8TK - 2 2026-05-14
TKJ8RG - 2 2026-05-24
TKJ8RE Tarkim Havacilik 2 2026-05-29
TKJ8HW Tarkim Havacilik 2 2026-06-08
TKJ7YN - 2 2026-05-28
TKJ79Q - 2 2026-04-29
TKJ5YU Tarkim Havacilik 2 2026-06-02
TKJ5NE - 2 2026-05-17
TKJ5DP Tarkim Havacilik 2 2026-05-27
TKJ5254 Tarkim Havacilik 2 2026-05-30
TKJ4MN - 2 2026-05-28
TKJ4LQ Tarkim Havacilik 2 2026-06-02

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-08 TKJ8HW ECN → SAW Jun 8, 17:05 UTCJun 8, 18:05 UTC1h 0m
2026-06-08 TKJ11V ESB → SAW Jun 8, 14:40 UTCJun 8, 15:45 UTC1h 5m
2026-06-08 TKJ2FM - Jun 8, 12:40 UTCJun 8, 13:25 UTC45m
2026-06-08 TKJ1QC SAW → SKP Jun 8, 10:00 UTCJun 8, 11:00 UTC1h 0m
2026-06-07 TKJ2HX - Jun 7, 17:50 UTCJun 7, 20:30 UTC2h 40m
2026-06-07 TKJ318 DAM → SAW Jun 7, 14:45 UTCJun 7, 16:15 UTC1h 30m
2026-06-07 TKJ317 SAW → DAM Jun 7, 11:20 UTCJun 7, 12:35 UTC1h 15m
2026-06-07 TKJ2MS TIA → SAW Jun 7, 08:35 UTCJun 7, 09:40 UTC1h 5m
2026-06-07 TKJ5QY SAW → ADB Jun 7, 05:20 UTCJun 7, 06:25 UTC1h 5m
2026-06-06 TKJ2NJ SAW → TBS Jun 6, 18:19 UTCJun 6, 21:50 UTC3h 30m
2026-06-06 TKJ318 DAM → SAW Jun 6, 15:05 UTCJun 6, 16:24 UTC1h 20m
2026-06-06 TKJ317 SAW → DAM Jun 6, 12:04 UTCJun 6, 13:20 UTC1h 15m
2026-06-06 TKJ8HW ECN → SAW Jun 6, 09:15 UTCJun 6, 10:14 UTC1h 0m
2026-06-06 TKJ11V ESB → SAW Jun 6, 06:25 UTCJun 6, 07:20 UTC55m
2026-06-06 TKJ7QM GNY → ESB Jun 6, 04:10 UTCJun 6, 04:45 UTC35m
2026-06-06 TKJ1JS SAW → ADB Jun 6, 02:15 UTCJun 6, 02:50 UTC35m
2026-06-05 TKJ6ZF ECN → SAW Jun 5, 21:25 UTCJun 5, 22:30 UTC1h 5m
2026-06-05 TKJ6PL SAW → ECN Jun 5, 19:00 UTCJun 5, 20:10 UTC1h 10m
2026-06-05 TKJ7CJ GNY → SAW Jun 5, 13:30 UTCJun 5, 17:10 UTC3h 40m
2026-06-04 TKJ9WG SAW → AMS Jun 4, 17:00 UTCJun 4, 20:00 UTC3h 0m
2026-06-04 TKJ18S - Jun 4, 11:00 UTCJun 4, 15:30 UTC4h 30m
2026-06-04 TKJ2TR BGW → SAW Jun 4, 03:10 UTCJun 4, 09:35 UTC6h 25m
2026-06-03 TKJ1LJ ADF → SAW Jun 3, 19:55 UTCJun 3, 20:20 UTC25m
2026-06-03 TKJ9BP - Jun 3, 14:55 UTCJun 3, 15:25 UTC30m
2026-06-03 TKJ1XH DXB → SAW Jun 3, 10:30 UTCJun 3, 13:10 UTC2h 40m
2026-06-03 TKJ71C SAW → AYT Jun 3, 06:15 UTCJun 3, 09:05 UTC2h 50m
2026-06-02 TKJ1BP - Jun 2, 15:15 UTCJun 2, 17:35 UTC2h 20m
2026-06-02 TKJ4LQ SAW → STR Jun 2, 10:25 UTCJun 2, 13:00 UTC2h 35m
2026-06-02 TKJ5YU BEY → SAW Jun 2, 07:30 UTCJun 2, 08:15 UTC45m
2026-06-02 TKJ6YA SAW → BEY Jun 2, 03:45 UTCJun 2, 05:00 UTC1h 15m
2026-06-01 TKJ51T ESB → AYT Jun 1, 23:20 UTCJun 2, 01:55 UTC2h 35m
2026-06-01 TKJ93 SAW → CGN Jun 1, 18:45 UTCJun 1, 21:45 UTC3h 0m
2026-06-01 TKJ39Y SAW → PRN Jun 1, 11:25 UTCJun 1, 14:05 UTC2h 40m
2026-06-01 TKJ2GJ SAW → DUS Jun 1, 07:00 UTCJun 1, 10:00 UTC3h 0m
2026-05-31 TKJ2HX - May 31, 18:00 UTCJun 1, 02:35 UTC8h 35m
2026-05-31 TKJ2ED GVA → ESB May 31, 12:30 UTCMay 31, 15:35 UTC3h 5m
2026-05-31 TKJ9YV FRA → ESB May 31, 08:25 UTCMay 31, 11:10 UTC2h 45m
2026-05-30 TKJ3SY ZRH → SAW May 30, 21:50 UTCMay 31, 00:55 UTC3h 5m
2026-05-30 TKJ5221 AYT → SAW May 30, 17:20 UTCMay 30, 18:15 UTC55m
2026-05-30 TKJ5220 DLM → SAW May 30, 15:00 UTCMay 30, 15:40 UTC40m
2026-05-30 TKJ5255 BJV → ESB May 30, 10:55 UTCMay 30, 12:25 UTC1h 30m
2026-05-30 TKJ5254 ESB → BJV May 30, 09:20 UTCMay 30, 09:30 UTC10m
2026-05-30 TKJ5254 ESB → BJV May 30, 08:10 UTCMay 30, 08:35 UTC25m
2026-05-29 TKJ1ML ECN → SAW May 29, 21:55 UTCMay 30, 06:30 UTC8h 35m
2026-05-29 TKJ8RE DLM → SAW May 29, 19:20 UTCMay 29, 20:15 UTC55m
2026-05-29 TKJ6MD SAW → DLM May 29, 16:50 UTCMay 29, 17:30 UTC40m
2026-05-29 TKJ2PC TZX → ESB May 29, 13:45 UTCMay 29, 15:00 UTC1h 15m
2026-05-29 TKJ4FC - May 29, 11:30 UTCMay 29, 12:35 UTC1h 5m
2026-05-28 TKJ1ML ECN → SAW May 28, 21:55 UTCMay 29, 06:35 UTC8h 40m
2026-05-28 TKJ4MN - May 28, 17:20 UTCMay 28, 19:00 UTC1h 40m

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-JHD page for operator, model, and routing details .

Mode-S 4BA904 frequently asked

What is Mode-S code 4BA904?
4BA904 is an ICAO 24-bit transponder address. Allocated to Turkey. Assigned to TC-JHD.
Where is Mode-S 4BA904 registered?
Mode-S code 4BA904 is allocated to Turkey (TR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4BA904 broadcasting right now?
No active broadcast right now. Last signal was 3h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4BA904, octal 22724404, decimal 4,958,468.
What flights does 4BA904 operate?
Mode-S 4BA904 has broadcast 20 distinct callsigns, including TKJ1ML, TKJ3SY, TKJ8MY, TKJ1ZP, TKJ7AJ.