Apparatus

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sensors Mode-S transponder

4BAA8A

ICAO 24-bit transponder address · allocated to Turkey

Currently assigned to TC-JTJ · AIRBUS A-321

Hex
4BAA8A
Octal
22725212
Decimal
4,958,858
Country
TR
Tail
TC-JTJ
Type
A321
No current signal · last broadcast 1h ago
Flights observed
176
Distinct callsigns
20
Country
TR
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 4BAA8A.

Country allocation

The ICAO 24-bit address 4BAA8A 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
THY8QM Turkish Airlines 3 2026-04-13
THY7KB Turkish Airlines 3 2026-05-22
THY65Y Turkish Airlines 3 2026-05-17
THY9VT Turkish Airlines 2 2026-05-30
THY9SD Turkish Airlines 2 2026-05-09
THY8FB Turkish Airlines 2 2026-05-13
THY8ES Turkish Airlines 2 2026-05-14
THY7NU Turkish Airlines 2 2026-05-13
THY7LX Turkish Airlines 2 2026-05-14
THY7FU Turkish Airlines 2 2026-05-08
THY75P - 2 2026-04-29
THY6ZS Turkish Airlines 2 2026-05-23
THY6XB Turkish Airlines 2 2026-05-16
THY6QV Turkish Airlines 2 2026-05-29
THY6JA Turkish Airlines 2 2026-05-19
THY6HL Turkish Airlines 2 2026-05-30
THY662 Turkish Airlines 2 2026-05-08
THY661 Turkish Airlines 2 2026-05-08
THY65X Turkish Airlines 2 2026-05-09
THY60E Turkish Airlines 2 2026-05-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 THY3KY IST → ADB May 30, 17:00 UTCMay 30, 18:30 UTC1h 30m
2026-05-30 THY8UG ADA → BEY May 30, 13:10 UTCMay 30, 15:45 UTC2h 35m
2026-05-30 THY6HL NUE → IST May 30, 08:55 UTCMay 30, 11:10 UTC2h 15m
2026-05-30 THY9VT ESB → IGD May 30, 05:05 UTCMay 30, 07:45 UTC2h 40m
2026-05-29 THY2LJ - May 29, 21:05 UTCMay 29, 21:15 UTC10m
2026-05-29 THY2LJ - May 29, 19:40 UTCMay 29, 20:15 UTC35m
2026-05-29 THY6QV SAW → STN May 29, 18:15 UTCMay 29, 18:30 UTC15m
2026-05-29 THY6QV SAW → STN May 29, 17:05 UTCMay 29, 17:35 UTC30m
2026-05-29 THY2DH - May 29, 14:45 UTCMay 29, 15:10 UTC25m
2026-05-29 THY9XR IST → KSY May 29, 10:05 UTCMay 29, 14:05 UTC4h 0m
2026-05-29 THY4XN VAR → IST May 29, 06:40 UTCMay 29, 07:20 UTC40m
2026-05-29 THY2QY IST → VAR May 29, 04:50 UTCMay 29, 05:25 UTC35m
2026-05-28 THY5CL EDI → ESB May 28, 13:40 UTCMay 28, 16:40 UTC3h 0m
2026-05-28 THY1KD VIE → IST May 28, 08:15 UTCMay 28, 09:55 UTC1h 40m
2026-05-28 THY7KF IST → VIE May 28, 04:55 UTCMay 28, 06:45 UTC1h 50m
2026-05-27 THY1YH CAI → IST May 27, 23:35 UTCMay 28, 01:10 UTC1h 35m
2026-05-27 THY3DK IST → CAI May 27, 18:35 UTCMay 27, 20:30 UTC1h 55m
2026-05-27 THY4VX ADB → IST May 27, 15:05 UTCMay 27, 15:45 UTC40m
2026-05-27 THY1WS IST → ADB May 27, 13:30 UTCMay 27, 14:00 UTC30m
2026-05-27 THY9TJ IST → DUS May 27, 06:44 UTCMay 27, 07:35 UTC50m
2026-05-27 THY4ND VCE → ISL May 27, 04:55 UTCMay 27, 05:40 UTC45m
2026-05-25 THY5BH AYT → VKO May 25, 10:00 UTCMay 25, 10:15 UTC15m
2026-05-25 THY5BH AYT → VKO May 25, 06:35 UTCMay 25, 08:55 UTC2h 20m
2026-05-25 THY9AX SAW → MLX May 25, 05:35 UTCMay 25, 05:45 UTC10m
2026-05-24 THY8GZ IST → EDI May 24, 18:30 UTCMay 24, 19:35 UTC1h 5m
2026-05-24 THY9XE MQM → IST May 24, 16:30 UTCMay 24, 17:10 UTC40m
2026-05-24 THY1MW VAN → IST May 24, 10:40 UTCMay 24, 14:30 UTC3h 50m
2026-05-24 THY1WN IST → LGW May 24, 05:20 UTCMay 24, 09:10 UTC3h 50m
2026-05-23 THY3GL KYA → IST May 23, 20:35 UTCMay 23, 20:50 UTC15m
2026-05-23 THY3GL KYA → IST May 23, 19:15 UTCMay 23, 19:55 UTC40m
2026-05-23 THY6ZS IST → BUS May 23, 16:20 UTCMay 23, 16:30 UTC10m
2026-05-23 THY8NY ESB → IST May 23, 13:50 UTCMay 23, 14:00 UTC10m
2026-05-23 THY8SW LHR → IST May 23, 11:25 UTCMay 23, 11:35 UTC10m
2026-05-23 THY55C IST → VIE May 23, 09:30 UTCMay 23, 09:45 UTC15m
2026-05-23 THY55C IST → VIE May 23, 08:15 UTCMay 23, 08:50 UTC35m
2026-05-23 THY1HM IST → TZX May 23, 06:45 UTCMay 23, 07:05 UTC20m
2026-05-23 THY1HM IST → TZX May 23, 05:40 UTCMay 23, 05:50 UTC10m
2026-05-22 THY60E IST → BEG May 22, 17:50 UTCMay 22, 18:55 UTC1h 5m
2026-05-22 THY7KB NAP → ISL May 22, 16:05 UTCMay 22, 16:35 UTC30m
2026-05-22 THY4953 ADA → IST May 22, 12:40 UTCMay 22, 12:55 UTC15m
2026-05-22 THY4952 IST → DIY May 22, 08:15 UTCMay 22, 08:25 UTC10m
2026-05-22 THY4AE SSH → IST May 22, 03:35 UTCMay 22, 05:30 UTC1h 55m
2026-05-21 THY9VP IST → SSH May 21, 23:30 UTCMay 22, 01:25 UTC1h 55m
2026-05-21 THY5MG MSR → IST May 21, 16:20 UTCMay 21, 16:30 UTC10m
2026-05-21 THY5MG MSR → IST May 21, 15:30 UTCMay 21, 15:50 UTC20m
2026-05-21 THY5BF LGW → IST May 21, 13:20 UTCMay 21, 14:15 UTC55m
2026-05-21 THY39P BRU → IST May 21, 05:40 UTCMay 21, 08:25 UTC2h 45m
2026-05-20 THY1EF IST → BRU May 20, 16:25 UTCMay 20, 19:10 UTC2h 45m
2026-05-20 THY8NL VAS → IST May 20, 08:55 UTCMay 20, 09:05 UTC10m
2026-05-19 THY1MF ERZ → IST May 19, 19:00 UTCMay 19, 19:10 UTC10m

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

Mode-S 4BAA8A frequently asked

What is Mode-S code 4BAA8A?
4BAA8A is an ICAO 24-bit transponder address. Allocated to Turkey. Assigned to TC-JTJ.
Where is Mode-S 4BAA8A registered?
Mode-S code 4BAA8A is allocated to Turkey (TR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4BAA8A broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4BAA8A, octal 22725212, decimal 4,958,858.
What flights does 4BAA8A operate?
Mode-S 4BAA8A has broadcast 20 distinct callsigns, including THY8QM, THY7KB, THY65Y, THY9VT, THY9SD.