Apparatus

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sensors Mode-S transponder

4BAA4B

ICAO 24-bit transponder address · allocated to Turkey

Currently assigned to TC-JRK · AIRBUS A-321

Hex
4BAA4B
Octal
22725113
Decimal
4,958,795
Country
TR
Tail
TC-JRK
Type
A321
No current signal · last broadcast 1h ago
Flights observed
160
Distinct callsigns
20
Country
TR
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 4BAA4B.

Country allocation

The ICAO 24-bit address 4BAA4B 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
THY8EV - 19 2026-07-17
THY2GR - 14 2026-07-15
THY1SM Turkish Airlines 13 2026-06-17
THY1KB - 11 2026-07-08
THY2CU - 10 2026-07-11
THY9EC - 9 2026-06-29
THY8AV - 5 2026-07-07
THY7JT - 5 2026-07-05
THY4TJ - 5 2026-07-07
THY9DM Turkish Airlines 4 2026-06-03
THY8LW - 4 2026-07-04
THY7CE - 4 2026-07-16
THY4VT - 4 2026-06-25
THY4TM - 4 2026-07-15
THY2BT - 4 2026-07-08
THY2AL - 4 2026-07-15
THY7KA Turkish Airlines 3 2026-06-19
THY3HJ - 3 2026-07-12
THY8NC Turkish Airlines 2 2026-06-19
THY4KR - 2 2026-06-27

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 THY8EV - Jul 17, 16:44 UTCJul 18, 00:45 UTC8h 0m
2026-07-16 THY7CE AYT → AYT Jul 16, 19:40 UTCJul 17, 04:29 UTC8h 50m
2026-07-16 THY6987 - Jul 16, 17:35 UTCJul 16, 18:15 UTC40m
2026-07-16 THY3027 - Jul 16, 13:15 UTCJul 16, 16:00 UTC2h 45m
2026-07-16 THY3027 - Jul 16, 12:09 UTCJul 16, 12:40 UTC30m
2026-07-16 THY3108 - Jul 16, 06:05 UTCJul 16, 09:25 UTC3h 20m
2026-07-15 THY2GR AYT → AYT Jul 15, 19:05 UTCJul 16, 04:05 UTC9h 0m
2026-07-15 THY4TM - Jul 15, 11:35 UTCJul 15, 15:25 UTC3h 50m
2026-07-15 THY2AL - Jul 15, 06:15 UTCJul 15, 10:05 UTC3h 50m
2026-07-14 THY2GR AYT → AYT Jul 14, 19:15 UTCJul 15, 04:15 UTC8h 59m
2026-07-14 THY3101 BER → AYT Jul 14, 16:45 UTCJul 14, 17:45 UTC1h 0m
2026-07-13 THY3100 - Jul 13, 03:40 UTCJul 13, 04:25 UTC45m
2026-07-12 THY3HJ AYT → AYT Jul 12, 05:10 UTCJul 12, 16:05 UTC10h 55m
2026-07-11 THY2CU - Jul 11, 17:35 UTCJul 12, 03:30 UTC9h 55m
2026-07-11 THY3HJ - Jul 11, 05:50 UTCJul 11, 15:05 UTC9h 15m
2026-07-10 THY2CU - Jul 10, 17:50 UTCJul 10, 21:15 UTC3h 25m
2026-07-09 THY2GR - Jul 9, 19:10 UTCJul 10, 04:30 UTC9h 20m
2026-07-08 THY2GR - Jul 8, 18:55 UTCJul 9, 04:20 UTC9h 25m
2026-07-08 THY2BT - Jul 8, 11:15 UTCJul 8, 14:30 UTC3h 15m
2026-07-08 THY1KB - Jul 8, 05:05 UTCJul 8, 08:25 UTC3h 20m
2026-07-07 THY4TJ AYT → AYT Jul 7, 17:10 UTCJul 8, 03:35 UTC10h 25m
2026-07-07 THY8AV - Jul 7, 05:25 UTCJul 7, 14:40 UTC9h 15m
2026-07-06 THY2CU - Jul 6, 17:25 UTCJul 7, 03:55 UTC10h 30m
2026-07-05 THY2GR - Jul 5, 18:55 UTCJul 6, 04:40 UTC9h 45m
2026-07-05 THY7JT - Jul 5, 05:35 UTCJul 5, 15:25 UTC9h 50m
2026-07-04 THY2CU - Jul 4, 18:00 UTCJul 5, 04:05 UTC10h 5m
2026-07-04 THY8LW - Jul 4, 12:10 UTCJul 4, 16:20 UTC4h 10m
2026-07-04 THY8AV - Jul 4, 06:50 UTCJul 4, 10:45 UTC3h 55m
2026-07-04 THY7CE - Jul 4, 00:35 UTCJul 4, 04:35 UTC4h 0m
2026-07-03 THY2GR - Jul 3, 18:55 UTCJul 3, 22:30 UTC3h 35m
2026-07-02 THY2GR - Jul 2, 19:25 UTCJul 3, 04:25 UTC9h 0m
2026-07-02 THY3108 - Jul 2, 07:35 UTCJul 2, 17:45 UTC10h 10m
2026-07-01 THY7CE - Jul 1, 20:15 UTCJul 2, 05:45 UTC9h 30m
2026-07-01 THY4TM LED → AYT Jul 1, 12:10 UTCJul 1, 15:35 UTC3h 25m
2026-07-01 THY2AL AYT → LED Jul 1, 06:05 UTCJul 1, 09:50 UTC3h 45m
2026-06-30 THY2GR - Jun 30, 18:55 UTCJul 1, 04:25 UTC9h 30m
2026-06-30 THY9KA - Jun 30, 06:15 UTCJun 30, 15:45 UTC9h 30m
2026-06-29 THY9EC - Jun 29, 18:49 UTCJun 30, 04:00 UTC9h 11m
2026-06-28 THY2GR - Jun 28, 18:59 UTCJun 29, 04:14 UTC9h 15m
2026-06-28 THY1KB - Jun 28, 04:55 UTCJun 28, 14:39 UTC9h 45m
2026-06-27 THY4TJ - Jun 27, 17:20 UTCJun 28, 03:19 UTC10h 0m
2026-06-27 THY1KB - Jun 27, 05:10 UTCJun 27, 14:20 UTC9h 10m
2026-06-27 THY4KR - Jun 27, 03:30 UTCJun 27, 03:44 UTC15m
2026-06-26 THY4TJ MSR → IST Jun 26, 17:29 UTCJun 26, 20:50 UTC3h 20m
2026-06-25 THY4VT - Jun 25, 17:39 UTCJun 26, 04:00 UTC10h 20m
2026-06-24 THY9EC - Jun 24, 18:50 UTCJun 25, 03:59 UTC9h 10m
2026-06-24 THY1KB AYT → AYT Jun 24, 05:05 UTCJun 24, 14:50 UTC9h 45m
2026-06-23 THY1LK - Jun 23, 17:54 UTCJun 24, 03:29 UTC9h 35m
2026-06-22 THY9EC AYT → LED Jun 22, 19:00 UTCJun 23, 04:05 UTC9h 5m
2026-06-22 THY4TM LED → AYT Jun 22, 08:54 UTCJun 22, 13:39 UTC4h 45m

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

Mode-S 4BAA4B frequently asked

What is Mode-S code 4BAA4B?
4BAA4B is an ICAO 24-bit transponder address. Allocated to Turkey. Assigned to TC-JRK.
Where is Mode-S 4BAA4B registered?
Mode-S code 4BAA4B is allocated to Turkey (TR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4BAA4B 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 4BAA4B, octal 22725113, decimal 4,958,795.
What flights does 4BAA4B operate?
Mode-S 4BAA4B has broadcast 20 distinct callsigns, including THY8EV, THY2GR, THY1SM, THY1KB, THY2CU.