Apparatus

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sensors Mode-S transponder

4BAA74

ICAO 24-bit transponder address · allocated to Turkey

Currently assigned to TC-JST · AIRBUS A-321

Hex
4BAA74
Octal
22725164
Decimal
4,958,836
Country
TR
Tail
TC-JST
Type
A321
No current signal · last broadcast 2h ago
Flights observed
257
Distinct callsigns
20
Country
TR
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 4BAA74.

Country allocation

The ICAO 24-bit address 4BAA74 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
THY1GH - 6 2026-06-23
THY8TW Turkish Airlines 5 2026-06-17
THY3122 Turkish Airlines 5 2026-06-19
THY5MG - 4 2026-06-29
THY5BF - 4 2026-06-29
THY8VN Turkish Airlines 3 2026-05-30
THY8CD - 3 2026-07-14
THY3028 - 3 2026-07-10
THY1BC Turkish Airlines 3 2026-05-30
THY9VU - 2 2026-06-25
THY9TF Turkish Airlines 2 2026-06-03
THY9EJ Turkish Airlines 2 2026-06-05
THY9BS - 2 2026-04-16
THY87X - 2 2026-07-02
THY80R - 2 2026-06-19
THY7WF Turkish Airlines 2 2026-04-15
THY7RS Turkish Airlines 2 2026-04-15
THY7PW - 2 2026-06-22
THY658 Turkish Airlines 2 2026-04-17
THY5UW - 2 2026-06-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 THY8CD - Jul 14, 16:50 UTCJul 14, 20:00 UTC3h 10m
2026-07-14 THY1JR - Jul 14, 05:00 UTCJul 14, 15:15 UTC10h 15m
2026-07-13 THY8LY AYT → AYT Jul 13, 17:25 UTCJul 14, 02:50 UTC9h 25m
2026-07-13 THY3RB - Jul 13, 07:55 UTCJul 13, 08:50 UTC55m
2026-07-13 THY5YA - Jul 13, 04:40 UTCJul 13, 05:25 UTC45m
2026-07-12 THY217 AYT → AYT Jul 12, 17:10 UTCJul 13, 03:10 UTC10h 0m
2026-07-12 THY6967 - Jul 12, 12:55 UTCJul 12, 13:30 UTC35m
2026-07-12 THY3194 - Jul 12, 01:50 UTCJul 12, 11:55 UTC10h 5m
2026-07-11 THY6985 - Jul 11, 20:55 UTCJul 11, 21:10 UTC15m
2026-07-11 THY6889 - Jul 11, 09:00 UTCJul 11, 19:20 UTC10h 20m
2026-07-11 THY3029 - Jul 11, 03:20 UTCJul 11, 05:45 UTC2h 25m
2026-07-10 THY3028 - Jul 10, 23:35 UTCJul 10, 23:50 UTC15m
2026-07-10 THY3028 - Jul 10, 19:25 UTCJul 10, 22:50 UTC3h 25m
2026-07-10 THY3008 - Jul 10, 06:55 UTCJul 10, 15:15 UTC8h 20m
2026-07-09 THY3006 - Jul 9, 19:10 UTCJul 10, 04:35 UTC9h 25m
2026-07-09 THY3066 - Jul 9, 06:35 UTCJul 9, 15:35 UTC9h 0m
2026-07-08 THY3DN - Jul 8, 17:05 UTCJul 9, 02:45 UTC9h 40m
2026-07-07 THY3028 - Jul 7, 19:25 UTCJul 8, 05:30 UTC10h 5m
2026-07-07 THY9KA - Jul 7, 05:25 UTCJul 7, 08:35 UTC3h 10m
2026-07-06 THY3018 - Jul 6, 17:35 UTCJul 7, 03:00 UTC9h 25m
2026-07-06 THY3160 - Jul 6, 04:45 UTCJul 6, 14:25 UTC9h 40m
2026-07-05 THY3018 - Jul 5, 17:45 UTCJul 6, 03:10 UTC9h 25m
2026-07-05 THY3066 - Jul 5, 06:25 UTCJul 5, 15:50 UTC9h 25m
2026-07-05 THY5KC - Jul 5, 00:25 UTCJul 5, 02:20 UTC1h 55m
2026-07-04 THY8CD - Jul 4, 16:45 UTCJul 4, 20:45 UTC4h 0m
2026-07-03 THY3DN - Jul 3, 17:00 UTCJul 4, 03:45 UTC10h 45m
2026-07-03 THY2EV - Jul 3, 13:55 UTCJul 3, 14:40 UTC45m
2026-07-03 THY41Q - Jul 3, 08:10 UTCJul 3, 09:10 UTC1h 0m
2026-07-03 THY1NK - Jul 3, 05:20 UTCJul 3, 06:15 UTC55m
2026-07-03 THY4GX - Jul 3, 01:35 UTCJul 3, 02:25 UTC50m
2026-07-02 THY2EA - Jul 2, 23:40 UTCJul 3, 00:25 UTC45m
2026-07-02 THY1VR - Jul 2, 12:35 UTCJul 2, 21:00 UTC8h 25m
2026-07-02 THY87X - Jul 2, 04:50 UTCJul 2, 07:15 UTC2h 25m
2026-07-01 THY4AY - Jul 1, 16:50 UTCJul 1, 19:05 UTC2h 15m
2026-06-30 THY272 - Jun 30, 18:35 UTCJun 30, 19:35 UTC1h 0m
2026-06-30 THY271 - Jun 30, 16:15 UTCJun 30, 16:55 UTC40m
2026-06-30 THY4XN - Jun 30, 06:30 UTCJun 30, 07:10 UTC40m
2026-06-30 THY2QY - Jun 30, 04:50 UTCJun 30, 05:20 UTC30m
2026-06-29 THY5MG - Jun 29, 14:50 UTCJun 29, 15:45 UTC55m
2026-06-29 THY5BF - Jun 29, 12:24 UTCJun 29, 13:24 UTC1h 0m
2026-06-29 THY2RA - Jun 29, 09:34 UTCJun 29, 10:04 UTC30m
2026-06-29 THY4GM - Jun 29, 07:30 UTCJun 29, 07:55 UTC25m
2026-06-28 THY5KB - Jun 28, 17:34 UTCJun 28, 18:44 UTC1h 10m
2026-06-28 THY87R - Jun 28, 14:59 UTCJun 28, 16:05 UTC1h 5m
2026-06-28 THY9LT - Jun 28, 08:05 UTCJun 28, 09:10 UTC1h 5m
2026-06-28 THY5LW - Jun 28, 04:59 UTCJun 28, 05:55 UTC55m
2026-06-27 THY9XH - Jun 27, 17:09 UTCJun 27, 20:14 UTC3h 5m
2026-06-27 THY4BZ - Jun 27, 13:00 UTCJun 27, 15:55 UTC2h 55m
2026-06-27 THY6LD - Jun 27, 07:34 UTCJun 27, 09:40 UTC2h 5m
2026-06-27 THY2XS - Jun 27, 03:55 UTCJun 27, 05:55 UTC2h 0m

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

Mode-S 4BAA74 frequently asked

What is Mode-S code 4BAA74?
4BAA74 is an ICAO 24-bit transponder address. Allocated to Turkey. Assigned to TC-JST.
Where is Mode-S 4BAA74 registered?
Mode-S code 4BAA74 is allocated to Turkey (TR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4BAA74 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 4BAA74, octal 22725164, decimal 4,958,836.
What flights does 4BAA74 operate?
Mode-S 4BAA74 has broadcast 20 distinct callsigns, including THY1GH, THY8TW, THY3122, THY5MG, THY5BF.