sensors Mode-S transponder

4BA901

ICAO 24-bit transponder address · allocated to Turkey

Currently assigned to TC-JHA · BOEING 737-800

Hex
4BA901
Octal
22724401
Decimal
4,958,465
Country
TR
Tail
TC-JHA
Type
B738
No current signal · last broadcast 2h ago
Flights observed
122
Distinct callsigns
20
Country
TR
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 4BA901.

Country allocation

The ICAO 24-bit address 4BA901 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
TKJ8MY - 9 2026-05-22
TKJ4CM Tarkim Havacilik 9 2026-05-23
TKJ8AT Tarkim Havacilik 5 2026-04-26
TKJ5QY Tarkim Havacilik 4 2026-05-02
TKJ3SY Tarkim Havacilik 4 2026-05-02
TKJ2MS Tarkim Havacilik 4 2026-05-02
TKJ2HX - 3 2026-04-28
TKJ1PR - 3 2026-04-26
TKJ15J Tarkim Havacilik 3 2026-04-21
TKJ8VB Tarkim Havacilik 2 2026-04-14
TKJ8RG - 2 2026-04-24
TKJ7YN - 2 2026-05-03
TKJ71U Tarkim Havacilik 2 2026-04-15
TKJ6UW Tarkim Havacilik 2 2026-04-15
TKJ5YQ - 2 2026-05-14
TKJ5ED Tarkim Havacilik 2 2026-04-14
TKJ4QU - 2 2026-04-21
TKJ4FC - 2 2026-04-28
TKJ2PC Tarkim Havacilik 2 2026-04-28
TKJ9TC Tarkim Havacilik 1 2026-05-10

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-29 TKJ23P - May 29, 18:40 UTCMay 30, 02:15 UTC7h 35m
2026-05-29 TKJ53R ESB → AYT May 29, 05:30 UTCMay 29, 17:25 UTC11h 55m
2026-05-28 TKJ79H - May 28, 14:15 UTCMay 29, 05:30 UTC15h 15m
2026-05-28 TKJ4BH ESB → OGU May 28, 12:45 UTCMay 28, 13:15 UTC30m
2026-05-27 TKJ4BR - May 27, 09:25 UTCMay 27, 11:45 UTC2h 20m
2026-05-26 TKJ3BW - May 26, 07:49 UTCMay 26, 08:10 UTC20m
2026-05-26 TKJ62X TZX → ESB May 26, 01:40 UTCMay 26, 06:39 UTC5h 0m
2026-05-25 TKJ2QD ESB → TZX May 25, 21:54 UTCMay 25, 22:15 UTC20m
2026-05-25 TKJ29Y AJI → ESB May 25, 09:10 UTCMay 25, 15:55 UTC6h 45m
2026-05-24 TKJ12D - May 24, 15:40 UTCMay 24, 15:50 UTC10m
2026-05-23 TKJ4CM ESB → SAW May 23, 19:05 UTCMay 24, 14:15 UTC19h 10m
2026-05-23 TKJ4CM ESB → SAW May 23, 14:20 UTCMay 24, 14:15 UTC23h 55m
2026-05-23 TKJ4CM ESB → SAW May 23, 14:10 UTCMay 24, 05:55 UTC15h 46m
2026-05-23 TKJ5361 TZX → SAW May 23, 10:00 UTCMay 23, 13:05 UTC3h 5m
2026-05-23 TKJ5360 SAW → TZX May 23, 08:35 UTCMay 23, 09:00 UTC25m
2026-05-22 TKJ8MY - May 22, 18:35 UTCMay 23, 00:05 UTC5h 30m
2026-05-21 TKJ8MY - May 21, 22:20 UTCMay 22, 17:15 UTC18h 54m
2026-05-21 TKJ8MY - May 21, 21:30 UTCMay 22, 17:15 UTC19h 44m
2026-05-21 TKJ8MY - May 21, 18:35 UTCMay 22, 17:15 UTC22h 40m
2026-05-20 TKJ4CM ESB → SAW May 20, 22:20 UTCMay 21, 17:25 UTC19h 5m
2026-05-20 TKJ8MY - May 20, 22:05 UTCMay 21, 17:25 UTC19h 20m
2026-05-20 TKJ8MY - May 20, 15:45 UTCMay 21, 05:35 UTC13h 50m
2026-05-20 TKJ95Z - May 20, 10:40 UTCMay 20, 14:15 UTC3h 35m
2026-05-20 TKJ3XZ ESB → DLM May 20, 06:45 UTCMay 20, 09:20 UTC2h 35m
2026-05-20 TKJ2RB - May 20, 05:05 UTCMay 20, 05:30 UTC25m
2026-05-18 TKJ7EZ - May 18, 10:40 UTCMay 18, 10:50 UTC10m
2026-05-18 TKJ9NC - May 18, 09:00 UTCMay 18, 09:20 UTC20m
2026-05-17 TKJ587 - May 17, 07:25 UTCMay 17, 16:20 UTC8h 55m
2026-05-16 TKJ8MY - May 16, 21:50 UTCMay 17, 02:15 UTC4h 25m
2026-05-16 TKJ8MY - May 16, 04:50 UTCMay 17, 02:15 UTC21h 25m
2026-05-15 TKJ584 - May 15, 22:20 UTCMay 16, 22:15 UTC23h 55m
2026-05-15 TKJ583 ESB → TAS May 15, 14:05 UTCMay 16, 06:01 UTC15h 55m
2026-05-14 TKJ5YQ - May 14, 18:45 UTCMay 15, 14:10 UTC19h 25m
2026-05-13 TKJ4CM ESB → SAW May 13, 22:25 UTCMay 14, 17:35 UTC19h 10m
2026-05-13 TKJ4CM ESB → SAW May 13, 18:20 UTCMay 14, 17:35 UTC23h 15m
2026-05-12 TKJ4CM ESB → SAW May 12, 22:45 UTCMay 13, 17:05 UTC18h 20m
2026-05-12 TKJ8MY - May 12, 04:20 UTCMay 13, 00:30 UTC20h 10m
2026-05-12 TKJ4CM ESB → SAW May 12, 03:05 UTCMay 13, 00:30 UTC21h 25m
2026-05-11 TKJ4CM ESB → SAW May 11, 18:15 UTCMay 12, 06:00 UTC11h 45m
2026-05-11 TKJ7GC - May 11, 16:50 UTCMay 11, 17:05 UTC16m
2026-05-10 TKJ9HJ - May 10, 16:50 UTCMay 11, 12:05 UTC19h 15m
2026-05-10 TKJ9TC ESB → BER May 10, 07:04 UTCMay 10, 15:15 UTC8h 10m
2026-05-09 TKJ5YQ - May 9, 18:25 UTCMay 10, 05:25 UTC11h 0m
2026-05-09 TKJ79Q - May 9, 11:45 UTCMay 9, 17:10 UTC5h 25m
2026-05-09 TKJ7RG - May 9, 05:40 UTCMay 9, 10:10 UTC4h 30m
2026-05-08 TKJ97R ESB → CKZ May 8, 18:00 UTCMay 8, 18:30 UTC30m
2026-05-06 TKJ4HS - May 6, 16:25 UTCMay 6, 18:50 UTC2h 24m
2026-05-03 TKJ4MN - May 3, 17:54 UTCMay 3, 18:30 UTC35m
2026-05-03 TKJ7YN - May 3, 15:55 UTCMay 3, 16:25 UTC30m
2026-05-03 TKJ20Q - May 3, 11:15 UTCMay 3, 13:20 UTC2h 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-JHA page for operator, model, and routing details .

Mode-S 4BA901 frequently asked

What is Mode-S code 4BA901?
4BA901 is an ICAO 24-bit transponder address. Allocated to Turkey. Assigned to TC-JHA.
Where is Mode-S 4BA901 registered?
Mode-S code 4BA901 is allocated to Turkey (TR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4BA901 broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4BA901, octal 22724401, decimal 4,958,465.
What flights does 4BA901 operate?
Mode-S 4BA901 has broadcast 20 distinct callsigns, including TKJ8MY, TKJ4CM, TKJ8AT, TKJ5QY, TKJ3SY.