Apparatus

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sensors Mode-S transponder

4BAA4A

ICAO 24-bit transponder address · allocated to Turkey

Currently assigned to TC-JRJ · AIRBUS A-321

Hex
4BAA4A
Octal
22725112
Decimal
4,958,794
Country
TR
Tail
TC-JRJ
Type
A321
No current signal · last broadcast 6m ago
Flights observed
70
Distinct callsigns
20
Country
TR
Last broadcast
6m ago

Last known position

Most recent position reported by Mode-S 4BAA4A.

Country allocation

The ICAO 24-bit address 4BAA4A 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
THY1SM Turkish Airlines 9 2026-06-19
THY9EC Turkish Airlines 7 2026-06-17
THY8EV - 6 2026-07-03
THY2GR Turkish Airlines 6 2026-06-20
THY3HJ Turkish Airlines 4 2026-06-20
THY1TC Turkish Airlines 4 2026-06-16
THY2CU Turkish Airlines 3 2026-06-09
THY8LW - 2 2026-07-03
THY8AV - 2 2026-07-03
THY7YG - 2 2026-06-19
THY7JT Turkish Airlines 2 2026-06-03
THY4TJ - 2 2026-07-04
THY2AL Turkish Airlines 2 2026-07-04
THY1DV Turkish Airlines 2 2026-06-10
THY9KA - 1 2026-06-16
THY9DM - 1 2026-07-03
THY8NC Turkish Airlines 1 2026-06-21
THY8ML Turkish Airlines 1 2026-06-03
THY7KA Turkish Airlines 1 2026-06-21
THY7CE Turkish Airlines 1 2026-06-18

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-05 THY4KR - Jul 5, 00:05 UTCJul 5, 00:30 UTC25m
2026-07-04 THY4TJ - Jul 4, 17:25 UTCJul 4, 21:20 UTC3h 55m
2026-07-04 THY4TM LED → AYT Jul 4, 11:40 UTCJul 4, 15:55 UTC4h 15m
2026-07-04 THY2AL AYT → LED Jul 4, 06:35 UTCJul 4, 10:25 UTC3h 50m
2026-07-03 THY9DM - Jul 3, 22:30 UTCJul 4, 02:25 UTC3h 55m
2026-07-03 THY8EV - Jul 3, 16:40 UTCJul 3, 20:15 UTC3h 35m
2026-07-03 THY8LW - Jul 3, 10:20 UTCJul 3, 13:55 UTC3h 35m
2026-07-03 THY8AV - Jul 3, 04:15 UTCJul 3, 08:05 UTC3h 50m
2026-07-02 THY8EV - Jul 2, 16:55 UTCJul 3, 02:20 UTC9h 25m
2026-06-21 THY4VT VKO → AYT Jun 21, 17:39 UTCJun 22, 04:34 UTC10h 55m
2026-06-21 THY7KA LED → AYT Jun 21, 11:24 UTCJun 21, 15:19 UTC3h 55m
2026-06-21 THY8NC VIE → ASR Jun 21, 05:59 UTCJun 21, 09:40 UTC3h 40m
2026-06-20 THY2GR AMS → IST Jun 20, 18:59 UTCJun 21, 04:14 UTC9h 15m
2026-06-20 THY3HJ AYT → VKO Jun 20, 06:39 UTCJun 20, 15:49 UTC9h 10m
2026-06-19 THY1SM AYT → VKO Jun 19, 17:59 UTCJun 20, 04:24 UTC10h 25m
2026-06-19 THY7YG - Jun 19, 06:10 UTCJun 19, 16:25 UTC10h 15m
2026-06-18 THY7CE LED → AYT Jun 18, 21:45 UTCJun 19, 04:10 UTC6h 24m
2026-06-18 THY2GR AMS → IST Jun 18, 19:05 UTCJun 18, 21:40 UTC2h 35m
2026-06-17 THY9EC AYT → LED Jun 17, 18:40 UTCJun 18, 03:50 UTC9h 10m
2026-06-17 THY3HJ AYT → VKO Jun 17, 05:30 UTCJun 17, 15:50 UTC10h 20m
2026-06-16 THY1TC LED → AYT Jun 16, 18:39 UTCJun 17, 03:55 UTC9h 16m
2026-06-16 THY7YG - Jun 16, 14:39 UTCJun 16, 16:50 UTC2h 10m
2026-06-16 THY9KA - Jun 16, 06:50 UTCJun 16, 10:04 UTC3h 15m
2026-06-16 THY1TC LED → AYT Jun 16, 03:45 UTCJun 16, 04:05 UTC20m
2026-06-15 THY9EC AYT → LED Jun 15, 18:55 UTCJun 16, 01:55 UTC7h 0m
2026-06-15 THY2AL AYT → LED Jun 15, 04:15 UTCJun 15, 13:40 UTC9h 25m
2026-06-14 THY8EV - Jun 14, 16:45 UTCJun 15, 02:15 UTC9h 29m
2026-06-13 THY2GR AMS → IST Jun 13, 15:00 UTCJun 14, 04:45 UTC13h 45m
2026-06-11 THY4TJ MSR → IST Jun 11, 17:25 UTCJun 12, 01:25 UTC8h 1m
2026-06-10 THY9EC AYT → LED Jun 10, 18:45 UTCJun 11, 04:25 UTC9h 40m
2026-06-10 THY1DV VKO → AYT Jun 10, 13:05 UTCJun 10, 16:00 UTC2h 55m
2026-06-10 THY1DV VKO → AYT Jun 10, 11:50 UTCJun 10, 12:25 UTC35m
2026-06-10 THY3HJ AYT → VKO Jun 10, 10:00 UTCJun 10, 10:15 UTC15m
2026-06-10 THY3HJ AYT → VKO Jun 10, 05:55 UTCJun 10, 09:05 UTC3h 10m
2026-06-09 THY2CU IST → HTY Jun 9, 18:00 UTCJun 10, 04:40 UTC10h 40m
2026-06-09 THY8LW LED → AYT Jun 9, 09:45 UTCJun 9, 13:35 UTC3h 50m
2026-06-09 THY8AV IST → PRG Jun 9, 04:10 UTCJun 9, 07:55 UTC3h 45m
2026-06-08 THY8EV - Jun 8, 16:50 UTCJun 9, 01:50 UTC9h 0m
2026-06-07 THY2CU IST → HTY Jun 7, 17:20 UTCJun 8, 03:20 UTC10h 0m
2026-06-07 THY1KB - Jun 7, 05:40 UTCJun 7, 08:50 UTC3h 10m
2026-06-06 THY9EC AYT → LED Jun 6, 19:04 UTCJun 7, 04:15 UTC9h 10m
2026-06-05 THY1SM AYT → VKO Jun 5, 18:15 UTCJun 5, 21:00 UTC2h 45m
2026-06-04 THY1SM AYT → VKO Jun 4, 17:45 UTCJun 5, 03:45 UTC10h 0m
2026-06-03 THY1SM AYT → VKO Jun 3, 17:50 UTCJun 4, 03:40 UTC9h 50m
2026-06-03 THY8ML VKO → AYT Jun 3, 13:15 UTCJun 3, 15:25 UTC2h 10m
2026-06-03 THY7JT AYT → VKO Jun 3, 10:05 UTCJun 3, 10:25 UTC20m
2026-06-03 THY7JT AYT → VKO Jun 3, 06:05 UTCJun 3, 09:25 UTC3h 20m
2026-06-02 THY1SM AYT → VKO Jun 2, 17:45 UTCJun 3, 04:40 UTC10h 55m
2026-06-01 THY2GR AMS → IST Jun 1, 19:00 UTCJun 2, 04:35 UTC9h 35m
2026-06-01 THY5495 - Jun 1, 15:05 UTCJun 1, 16:35 UTC1h 30m

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

Mode-S 4BAA4A frequently asked

What is Mode-S code 4BAA4A?
4BAA4A is an ICAO 24-bit transponder address. Allocated to Turkey. Assigned to TC-JRJ.
Where is Mode-S 4BAA4A registered?
Mode-S code 4BAA4A is allocated to Turkey (TR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4BAA4A broadcasting right now?
No active broadcast right now. Last signal was 6m ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4BAA4A, octal 22725112, decimal 4,958,794.
What flights does 4BAA4A operate?
Mode-S 4BAA4A has broadcast 20 distinct callsigns, including THY1SM, THY9EC, THY8EV, THY2GR, THY3HJ.