Apparatus

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sensors Mode-S transponder

4BAA7A

ICAO 24-bit transponder address · allocated to Turkey

Currently assigned to TC-JSZ · AIRBUS A-321

Hex
4BAA7A
Octal
22725172
Decimal
4,958,842
Country
TR
Tail
TC-JSZ
Type
A321
No current signal · last broadcast 1d ago
Flights observed
164
Distinct callsigns
20
Country
TR
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 4BAA7A.

Country allocation

The ICAO 24-bit address 4BAA7A 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
THY657 Turkish Airlines 3 2026-05-19
THY3XJ Turkish Airlines 3 2026-05-20
THY9DX Turkish Airlines 2 2026-05-26
THY9BA Turkish Airlines 2 2026-05-24
THY98U Turkish Airlines 2 2026-05-10
THY8ES Turkish Airlines 2 2026-05-28
THY7MP Turkish Airlines 2 2026-04-16
THY7AH Turkish Airlines 2 2026-04-17
THY6QV Turkish Airlines 2 2026-05-26
THY658 Turkish Airlines 2 2026-05-19
THY640 Turkish Airlines 2 2026-04-15
THY639 Turkish Airlines 2 2026-04-15
THY5UA Turkish Airlines 2 2026-04-17
THY5PB Turkish Airlines 2 2026-05-21
THY5EH Turkish Airlines 2 2026-05-20
THY5DQ Turkish Airlines 2 2026-05-04
THY4VX Turkish Airlines 2 2026-05-19
THY4VS Turkish Airlines 2 2026-06-01
THY4HN Turkish Airlines 2 2026-05-21
THY4AF Turkish Airlines 2 2026-05-04

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-01 THY2GY IST → VAN Jun 1, 07:30 UTCJun 1, 12:00 UTC4h 30m
2026-06-01 THY4VS TBS → IST Jun 1, 00:30 UTCJun 1, 00:50 UTC20m
2026-05-31 THY4VS TBS → IST May 31, 22:50 UTCMay 31, 23:50 UTC1h 0m
2026-05-31 THY7JD IST → BUS May 31, 19:15 UTCMay 31, 21:10 UTC1h 55m
2026-05-31 THY5UZ ADB → IST May 31, 16:20 UTCMay 31, 17:05 UTC45m
2026-05-31 THY2VN KYA → IST May 31, 14:00 UTCMay 31, 14:40 UTC40m
2026-05-30 THY9VP IST → SSH May 30, 23:15 UTCMay 31, 12:00 UTC12h 45m
2026-05-30 THY4JC HAJ → IST May 30, 17:55 UTCMay 30, 20:15 UTC2h 20m
2026-05-30 THY9VA IST → HAJ May 30, 13:45 UTCMay 30, 16:35 UTC2h 50m
2026-05-30 THY2FQ BER → IST May 30, 08:55 UTCMay 30, 11:30 UTC2h 35m
2026-05-30 THY1PE CDG → IST May 30, 04:30 UTCMay 30, 07:15 UTC2h 45m
2026-05-29 THY6BW - May 29, 13:05 UTCMay 29, 16:45 UTC3h 40m
2026-05-29 THY1WR - May 29, 05:40 UTCMay 29, 09:20 UTC3h 40m
2026-05-28 THY7LX ECN → IST May 28, 07:55 UTCMay 28, 09:10 UTC1h 15m
2026-05-28 THY8ES IST → TGD May 28, 05:20 UTCMay 28, 06:25 UTC1h 5m
2026-05-27 THY5ZC ADB → IST May 27, 14:00 UTCMay 27, 14:40 UTC40m
2026-05-27 THY9JV ORN → IST May 27, 12:15 UTCMay 27, 12:50 UTC35m
2026-05-27 THY4955 ADA → IST May 27, 07:10 UTCMay 27, 07:50 UTC40m
2026-05-27 THY4954 IST → AYT May 27, 05:14 UTCMay 27, 05:59 UTC45m
2026-05-26 THY2LJ - May 26, 20:50 UTCMay 26, 21:09 UTC20m
2026-05-26 THY2LJ - May 26, 19:34 UTCMay 26, 20:15 UTC40m
2026-05-26 THY6QV SAW → STN May 26, 18:19 UTCMay 26, 18:24 UTC5m
2026-05-26 THY6QV SAW → STN May 26, 17:09 UTCMay 26, 17:20 UTC10m
2026-05-26 THY3JW AYT → IST May 26, 13:50 UTCMay 26, 14:45 UTC55m
2026-05-26 THY9DX IST → EAP May 26, 11:50 UTCMay 26, 12:35 UTC45m
2026-05-25 THY6JP LJU → IST May 25, 14:05 UTCMay 25, 15:10 UTC1h 5m
2026-05-25 THY7ZV ZRH → IST May 25, 11:50 UTCMay 25, 12:55 UTC1h 5m
2026-05-25 THY2AW IST → ERZ May 25, 09:00 UTCMay 25, 09:15 UTC15m
2026-05-25 THY2AW IST → ERZ May 25, 08:00 UTCMay 25, 08:15 UTC15m
2026-05-25 THY1WU IST → ERC May 25, 06:20 UTCMay 25, 06:35 UTC15m
2026-05-24 THY9BA SKP → IST May 24, 18:35 UTCMay 24, 19:25 UTC50m
2026-05-24 THY1LR AYT → VKO May 24, 16:20 UTCMay 24, 17:00 UTC40m
2026-05-24 THY3QL NKT → IST May 24, 09:55 UTCMay 24, 10:05 UTC10m
2026-05-24 THY6PT EDI → ISL May 24, 05:35 UTCMay 24, 05:45 UTC10m
2026-05-23 THY84X BSL → IST May 23, 17:25 UTCMay 23, 20:15 UTC2h 51m
2026-05-23 THY1FY DUB → IST May 23, 13:50 UTCMay 23, 16:15 UTC2h 25m
2026-05-23 THY5AW CPH → IST May 23, 08:35 UTCMay 23, 11:15 UTC2h 40m
2026-05-23 THY3PB ADB → IST May 23, 04:50 UTCMay 23, 07:30 UTC2h 40m
2026-05-22 THY9VU IST → VAR May 22, 19:30 UTCMay 22, 20:50 UTC1h 20m
2026-05-22 THY4PR AYT → IST May 22, 17:10 UTCMay 22, 18:15 UTC1h 5m
2026-05-22 THY3JW AYT → IST May 22, 14:15 UTCMay 22, 15:10 UTC55m
2026-05-22 THY9DX IST → EAP May 22, 11:35 UTCMay 22, 12:55 UTC1h 20m
2026-05-22 THY1WR - May 22, 09:05 UTCMay 22, 09:20 UTC15m
2026-05-22 THY5ER IST → CDG May 22, 05:45 UTCMay 22, 05:55 UTC10m
2026-05-21 THY4TA CAI → IST May 21, 19:25 UTCMay 21, 21:00 UTC1h 35m
2026-05-21 THY3PC IST → CAI May 21, 15:55 UTCMay 21, 17:25 UTC1h 30m
2026-05-21 THY4HN DLM → IST May 21, 12:05 UTCMay 21, 12:55 UTC50m
2026-05-21 THY5PB IST → DLM May 21, 09:50 UTCMay 21, 10:35 UTC45m
2026-05-21 THY40H FCO → IST May 21, 05:20 UTCMay 21, 07:20 UTC2h 0m
2026-05-20 THY5EJ IST → FCO May 20, 19:10 UTCMay 20, 21:10 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-JSZ page for operator, model, and routing details .

Mode-S 4BAA7A frequently asked

What is Mode-S code 4BAA7A?
4BAA7A is an ICAO 24-bit transponder address. Allocated to Turkey. Assigned to TC-JSZ.
Where is Mode-S 4BAA7A registered?
Mode-S code 4BAA7A is allocated to Turkey (TR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4BAA7A broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4BAA7A, octal 22725172, decimal 4,958,842.
What flights does 4BAA7A operate?
Mode-S 4BAA7A has broadcast 20 distinct callsigns, including THY657, THY3XJ, THY9DX, THY9BA, THY98U.