Apparatus

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sensors Mode-S transponder

4BAA42

ICAO 24-bit transponder address · allocated to Turkey

Currently assigned to TC-JRB · AIRBUS A-321

Hex
4BAA42
Octal
22725102
Decimal
4,958,786
Country
TR
Tail
TC-JRB
Type
A321
No current signal · last broadcast 2h ago
Flights observed
224
Distinct callsigns
20
Country
TR
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 4BAA42.

Country allocation

The ICAO 24-bit address 4BAA42 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
THY5YG - 16 2026-07-08
THY5TV - 9 2026-07-10
THY1EM - 7 2026-07-08
THY9CM Turkish Airlines 6 2026-06-27
THY4UD - 5 2026-07-05
THY5PB - 4 2026-07-12
THY3AB - 4 2026-07-04
THY7VK - 3 2026-07-02
THY7MV Turkish Airlines 3 2026-05-30
THY6VH Turkish Airlines 3 2026-05-17
THY6GU - 3 2026-07-02
THY5390 Turkish Airlines 3 2026-06-14
THY4VB Turkish Airlines 3 2026-06-05
THY4HN - 3 2026-07-12
THY2TF Turkish Airlines 3 2026-05-30
THY2JV - 3 2026-04-22
THY2GR - 3 2026-06-27
THY9WY Turkish Airlines 2 2026-05-30
THY9JC Turkish Airlines 2 2026-05-17
THY9EH - 2 2026-07-10

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 THY1CB - Jul 14, 12:35 UTCJul 14, 13:25 UTC50m
2026-07-14 THY2522 - Jul 14, 10:20 UTCJul 14, 11:20 UTC1h 0m
2026-07-14 THY9LR - Jul 14, 05:35 UTCJul 14, 06:30 UTC55m
2026-07-13 THY1SM AYT → AYT Jul 13, 17:50 UTCJul 14, 03:55 UTC10h 5m
2026-07-13 THY4UA - Jul 13, 14:45 UTCJul 13, 15:45 UTC1h 0m
2026-07-13 THY2RA - Jul 13, 09:20 UTCJul 13, 10:05 UTC45m
2026-07-13 THY4GM - Jul 13, 07:20 UTCJul 13, 07:40 UTC20m
2026-07-13 THY4GX - Jul 13, 01:20 UTCJul 13, 02:10 UTC50m
2026-07-12 THY2EA - Jul 12, 23:10 UTCJul 12, 23:55 UTC45m
2026-07-12 THY7HL - Jul 12, 20:05 UTCJul 12, 20:55 UTC50m
2026-07-12 THY4GE - Jul 12, 18:01 UTCJul 12, 18:55 UTC55m
2026-07-12 THY4HN - Jul 12, 12:01 UTCJul 12, 12:55 UTC55m
2026-07-12 THY5PB - Jul 12, 09:45 UTCJul 12, 10:25 UTC40m
2026-07-12 THY6957 - Jul 12, 06:50 UTCJul 12, 07:45 UTC55m
2026-07-12 THY3123 - Jul 12, 03:40 UTCJul 12, 05:35 UTC1h 55m
2026-07-10 THY5TV - Jul 10, 17:40 UTCJul 10, 21:05 UTC3h 25m
2026-07-10 THY9EH - Jul 10, 14:55 UTCJul 10, 15:45 UTC50m
2026-07-10 THY6973 - Jul 10, 10:15 UTCJul 10, 11:15 UTC1h 0m
2026-07-08 THY5YG - Jul 8, 17:15 UTCJul 9, 02:40 UTC9h 25m
2026-07-08 THY1EM - Jul 8, 05:10 UTCJul 8, 14:05 UTC8h 55m
2026-07-07 THY5YG - Jul 7, 17:15 UTCJul 8, 03:25 UTC10h 10m
2026-07-06 THY5YG - Jul 6, 17:05 UTCJul 7, 03:10 UTC10h 5m
2026-07-06 THY1EM - Jul 6, 06:10 UTCJul 6, 15:15 UTC9h 5m
2026-07-05 THY5YG - Jul 5, 17:45 UTCJul 6, 03:20 UTC9h 35m
2026-07-05 THY4UD - Jul 5, 10:50 UTCJul 5, 14:10 UTC3h 20m
2026-07-05 THY1EM - Jul 5, 05:20 UTCJul 5, 09:10 UTC3h 50m
2026-07-04 THY5TV - Jul 4, 17:50 UTCJul 5, 03:00 UTC9h 10m
2026-07-04 THY4UD - Jul 4, 12:50 UTCJul 4, 16:20 UTC3h 30m
2026-07-04 THY1EM - Jul 4, 07:40 UTCJul 4, 11:40 UTC4h 0m
2026-07-04 THY3AB - Jul 4, 04:10 UTCJul 4, 06:15 UTC2h 5m
2026-07-03 THY5YG - Jul 3, 23:15 UTCJul 3, 23:30 UTC15m
2026-07-03 THY5YG - Jul 3, 17:30 UTCJul 3, 20:40 UTC3h 10m
2026-07-03 THY9EH - Jul 3, 15:05 UTCJul 3, 15:50 UTC45m
2026-07-03 THY1CB - Jul 3, 12:35 UTCJul 3, 13:25 UTC50m
2026-07-03 THY2522 - Jul 3, 10:35 UTCJul 3, 11:25 UTC50m
2026-07-03 THY4YL - Jul 3, 08:10 UTCJul 3, 08:45 UTC35m
2026-07-03 THY3UZ - Jul 3, 05:15 UTCJul 3, 05:40 UTC25m
2026-07-02 THY8RA - Jul 2, 20:20 UTCJul 2, 20:55 UTC35m
2026-07-02 THY7NX - Jul 2, 18:15 UTCJul 2, 18:40 UTC25m
2026-07-02 THY7VK - Jul 2, 11:50 UTCJul 2, 12:30 UTC40m
2026-07-02 THY6GU - Jul 2, 09:45 UTCJul 2, 10:35 UTC50m
2026-06-30 THY3JW - Jun 30, 14:20 UTCJun 30, 15:20 UTC1h 0m
2026-06-29 THY1SM - Jun 29, 17:59 UTCJun 30, 05:10 UTC11h 10m
2026-06-27 THY2GR - Jun 27, 22:49 UTCJun 28, 07:50 UTC9h 0m
2026-06-27 THY6970 - Jun 27, 20:19 UTCJun 27, 21:10 UTC50m
2026-06-27 THY9TU - Jun 27, 17:44 UTCJun 27, 18:45 UTC1h 0m
2026-06-27 THY9CM BRE → IST Jun 27, 04:44 UTCJun 27, 13:55 UTC9h 10m
2026-06-26 THY5YG - Jun 26, 17:19 UTCJun 27, 02:59 UTC9h 40m
2026-06-25 THY5TV CND → IST Jun 25, 17:30 UTCJun 26, 03:34 UTC10h 5m
2026-06-24 THY5TV CND → IST Jun 24, 17:34 UTCJun 25, 03:59 UTC10h 25m

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

Mode-S 4BAA42 frequently asked

What is Mode-S code 4BAA42?
4BAA42 is an ICAO 24-bit transponder address. Allocated to Turkey. Assigned to TC-JRB.
Where is Mode-S 4BAA42 registered?
Mode-S code 4BAA42 is allocated to Turkey (TR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4BAA42 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 4BAA42, octal 22725102, decimal 4,958,786.
What flights does 4BAA42 operate?
Mode-S 4BAA42 has broadcast 20 distinct callsigns, including THY5YG, THY5TV, THY1EM, THY9CM, THY4UD.