Apparatus

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sensors Mode-S transponder

4BAA54

ICAO 24-bit transponder address · allocated to Turkey

Currently assigned to TC-JRT · AIRBUS A-321

Hex
4BAA54
Octal
22725124
Decimal
4,958,804
Country
TR
Tail
TC-JRT
Type
A321
No current signal · last broadcast 2h ago
Flights observed
226
Distinct callsigns
20
Country
TR
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 4BAA54.

Country allocation

The ICAO 24-bit address 4BAA54 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
THY8LY - 10 2026-07-03
THY1JR - 10 2026-07-04
THY9JE Turkish Airlines 8 2026-06-30
THY8CD - 8 2026-07-01
THY1SL - 8 2026-07-09
THY217 Turkish Airlines 7 2026-07-02
THY1HC Turkish Airlines 7 2026-06-04
THY5YA - 5 2026-06-26
THY4UA - 5 2026-06-29
THY3DN Turkish Airlines 5 2026-06-20
THY1VR Turkish Airlines 5 2026-06-05
THY3HU Turkish Airlines 4 2026-05-26
THY74M Turkish Airlines 3 2026-04-16
THY6LD - 3 2026-04-13
THY2UH Turkish Airlines 3 2026-05-27
THY1GH Turkish Airlines 3 2026-05-23
THY9DX Turkish Airlines 2 2026-05-15
THY8TW - 2 2026-07-13
THY89M Turkish Airlines 2 2026-04-16
THY7DB - 2 2026-07-08

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 THY5LG - Jul 14, 05:45 UTCJul 14, 09:00 UTC3h 15m
2026-07-13 THY8TW - Jul 13, 18:40 UTCJul 14, 04:20 UTC9h 40m
2026-07-12 THY3122 - Jul 12, 22:10 UTCJul 13, 07:45 UTC9h 35m
2026-07-12 THY7CB VKO → BJV Jul 12, 19:35 UTCJul 12, 20:30 UTC55m
2026-07-12 THY7HD - Jul 12, 05:40 UTCJul 12, 18:01 UTC12h 20m
2026-07-11 THY2DC - Jul 11, 11:05 UTCJul 11, 14:45 UTC3h 40m
2026-07-11 THY5LG - Jul 11, 06:01 UTCJul 11, 09:45 UTC3h 45m
2026-07-10 THY8TW - Jul 10, 18:30 UTCJul 11, 04:35 UTC10h 5m
2026-07-10 THY3056 - Jul 10, 06:50 UTCJul 10, 15:40 UTC8h 50m
2026-07-09 THY5LT - Jul 9, 20:30 UTCJul 9, 21:20 UTC50m
2026-07-09 THY1SL - Jul 9, 06:00 UTCJul 9, 13:45 UTC7h 45m
2026-07-08 THY7DB - Jul 8, 16:55 UTCJul 9, 00:50 UTC7h 55m
2026-07-08 THY1SL - Jul 8, 05:55 UTCJul 8, 13:35 UTC7h 40m
2026-07-07 THY9YQ - Jul 7, 23:00 UTCJul 8, 00:40 UTC1h 40m
2026-07-07 THY7DB - Jul 7, 17:10 UTCJul 7, 19:50 UTC2h 40m
2026-07-06 THY4HA - Jul 6, 18:05 UTCJul 7, 01:55 UTC7h 50m
2026-07-06 THY7LY - Jul 6, 13:15 UTCJul 6, 16:35 UTC3h 20m
2026-07-06 THY3LK - Jul 6, 07:10 UTCJul 6, 11:05 UTC3h 55m
2026-07-05 THY1HK - Jul 5, 18:15 UTCJul 5, 22:05 UTC3h 50m
2026-07-05 THY4VX - Jul 5, 15:15 UTCJul 5, 16:00 UTC45m
2026-07-05 THY1WS - Jul 5, 13:25 UTCJul 5, 14:00 UTC35m
2026-07-05 THY2589 - Jul 5, 10:45 UTCJul 5, 11:45 UTC1h 0m
2026-07-05 THY2588 - Jul 5, 08:35 UTCJul 5, 09:15 UTC40m
2026-07-05 THY6961 - Jul 5, 05:25 UTCJul 5, 06:15 UTC50m
2026-07-04 THY3018 AYT → AYT Jul 4, 17:50 UTCJul 5, 03:20 UTC9h 30m
2026-07-04 THY1JR - Jul 4, 05:00 UTCJul 4, 14:25 UTC9h 25m
2026-07-03 THY8LY AYT → AYT Jul 3, 17:25 UTCJul 4, 02:50 UTC9h 25m
2026-07-03 THY1JR - Jul 3, 05:15 UTCJul 3, 15:05 UTC9h 50m
2026-07-02 THY217 SAW → RUH Jul 2, 17:30 UTCJul 3, 03:20 UTC9h 50m
2026-07-02 THY5VJ - Jul 2, 14:50 UTCJul 2, 15:15 UTC25m
2026-07-02 THY1JR - Jul 2, 05:00 UTCJul 2, 08:05 UTC3h 5m
2026-07-01 THY8CD - Jul 1, 16:50 UTCJul 2, 03:05 UTC10h 15m
2026-06-30 THY8EV - Jun 30, 16:50 UTCJul 1, 02:30 UTC9h 40m
2026-06-30 THY9JE IST → KFS Jun 30, 04:45 UTCJun 30, 14:10 UTC9h 25m
2026-06-29 THY8LY - Jun 29, 17:24 UTCJun 30, 02:50 UTC9h 26m
2026-06-29 THY4UA - Jun 29, 14:50 UTCJun 29, 15:45 UTC55m
2026-06-29 THY5UA - Jun 29, 09:00 UTCJun 29, 11:14 UTC2h 15m
2026-06-29 THY7AH - Jun 29, 04:55 UTCJun 29, 06:44 UTC1h 50m
2026-06-28 THY1DY - Jun 28, 16:55 UTCJun 29, 02:09 UTC9h 15m
2026-06-27 THY1SW - Jun 27, 23:50 UTCJun 28, 02:29 UTC2h 40m
2026-06-27 THY9EJ - Jun 27, 19:49 UTCJun 27, 20:44 UTC55m
2026-06-27 THY8KU - Jun 27, 17:25 UTCJun 27, 18:15 UTC50m
2026-06-27 THY5MG - Jun 27, 14:49 UTCJun 27, 15:55 UTC1h 5m
2026-06-27 THY5BF - Jun 27, 12:39 UTCJun 27, 13:35 UTC55m
2026-06-27 THY29B - Jun 27, 09:15 UTCJun 27, 10:14 UTC1h 0m
2026-06-27 THY5CJ - Jun 27, 06:59 UTCJun 27, 07:49 UTC50m
2026-06-26 THY2QT - Jun 26, 17:35 UTCJun 26, 19:20 UTC1h 45m
2026-06-26 THY6RZ WAW → IST Jun 26, 16:14 UTCJun 26, 16:24 UTC10m
2026-06-26 THY6RZ WAW → IST Jun 26, 14:59 UTCJun 26, 15:29 UTC30m
2026-06-26 THY30Q - Jun 26, 08:30 UTCJun 26, 12:50 UTC4h 20m

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

Mode-S 4BAA54 frequently asked

What is Mode-S code 4BAA54?
4BAA54 is an ICAO 24-bit transponder address. Allocated to Turkey. Assigned to TC-JRT.
Where is Mode-S 4BAA54 registered?
Mode-S code 4BAA54 is allocated to Turkey (TR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4BAA54 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 4BAA54, octal 22725124, decimal 4,958,804.
What flights does 4BAA54 operate?
Mode-S 4BAA54 has broadcast 20 distinct callsigns, including THY8LY, THY1JR, THY9JE, THY8CD, THY1SL.