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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 Jul 26, 14:05 UTC
Flights observed
279
Distinct callsigns
20
Country
TR
Last broadcast
Jul 26, 14:05 UTC

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 - 10 2026-07-17
THY1EM Turkish Airlines 9 2026-07-19
THY4UD - 7 2026-07-19
THY9CM Turkish Airlines 6 2026-06-27
THY3AB - 6 2026-07-19
THY7HL Turkish Airlines 4 2026-07-24
THY5PB - 4 2026-07-12
THY4GE Turkish Airlines 4 2026-07-24
THY9EH - 3 2026-07-17
THY7VK - 3 2026-07-02
THY7MV Turkish Airlines 3 2026-05-30
THY6WR Turkish Airlines 3 2026-07-17
THY6VH Turkish Airlines 3 2026-05-17
THY6TG Turkish Airlines 3 2026-07-21
THY6GU - 3 2026-07-02
THY5390 Turkish Airlines 3 2026-06-14
THY4VB Turkish Airlines 3 2026-06-05
THY4HN - 3 2026-07-12
THY4CV - 3 2026-07-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 THY985 ECN → IST Jul 26, 12:35 UTCJul 26, 14:05 UTC1h 30m
2026-07-26 THY984 IST → ECN Jul 26, 10:05 UTCJul 26, 11:15 UTC1h 10m
2026-07-26 THY7VL GVA → IST Jul 26, 07:00 UTCJul 26, 08:15 UTC1h 15m
2026-07-26 THY6LJ ECN → IST Jul 26, 04:20 UTCJul 26, 05:35 UTC1h 15m
2026-07-25 THY1YH CAI → IST Jul 25, 23:45 UTCJul 26, 01:20 UTC1h 35m
2026-07-25 THY3DK IST → CAI Jul 25, 19:35 UTCJul 25, 21:10 UTC1h 35m
2026-07-25 THY5SX IST → SZF Jul 25, 16:25 UTCJul 25, 17:20 UTC55m
2026-07-25 THY6AC NCE → IST Jul 25, 14:10 UTCJul 25, 15:05 UTC55m
2026-07-25 THY3DU IKA → IST Jul 25, 10:15 UTCJul 25, 11:10 UTC55m
2026-07-25 THY95M PMO → IST Jul 25, 08:10 UTCJul 25, 09:05 UTC55m
2026-07-25 THY7MB ADB → IST Jul 25, 01:10 UTCJul 25, 01:55 UTC45m
2026-07-24 THY8BW IST → ADB Jul 24, 23:15 UTCJul 24, 23:55 UTC40m
2026-07-24 THY7HL BJV → IST Jul 24, 20:20 UTCJul 24, 21:10 UTC50m
2026-07-24 THY4GE IST → BJV Jul 24, 18:15 UTCJul 24, 19:15 UTC1h 0m
2026-07-24 THY2LX GZT → IST Jul 24, 14:50 UTCJul 24, 15:45 UTC55m
2026-07-24 THY4CV - Jul 24, 12:40 UTCJul 24, 13:35 UTC55m
2026-07-24 THY3QL NKT → IST Jul 24, 05:30 UTCJul 24, 10:10 UTC4h 40m
2026-07-23 THY7HL BJV → IST Jul 23, 20:30 UTCJul 23, 21:20 UTC50m
2026-07-23 THY4GE IST → BJV Jul 23, 18:20 UTCJul 23, 19:15 UTC55m
2026-07-23 THY2LX GZT → IST Jul 23, 14:35 UTCJul 23, 15:20 UTC45m
2026-07-23 THY4CV - Jul 23, 12:35 UTCJul 23, 13:25 UTC50m
2026-07-23 THY3ZY ZAG → IST Jul 23, 07:55 UTCJul 23, 09:30 UTC1h 35m
2026-07-23 THY4ZG IST → ZAG Jul 23, 05:00 UTCJul 23, 06:40 UTC1h 40m
2026-07-22 THY823 AMM → IST Jul 22, 22:25 UTCJul 22, 23:55 UTC1h 30m
2026-07-22 THY822 - Jul 22, 18:50 UTCJul 22, 20:15 UTC1h 25m
2026-07-22 THY5057 - Jul 22, 03:20 UTCJul 22, 17:10 UTC13h 50m
2026-07-21 THY7NY ASR → IST Jul 21, 18:55 UTCJul 21, 22:05 UTC3h 10m
2026-07-21 THY2LX - Jul 21, 14:30 UTCJul 21, 15:20 UTC50m
2026-07-21 THY4CV - Jul 21, 12:20 UTCJul 21, 13:10 UTC50m
2026-07-21 THY1CK BJV → IST Jul 21, 09:40 UTCJul 21, 10:30 UTC50m
2026-07-21 THY6TG IST → BJV Jul 21, 07:20 UTCJul 21, 08:10 UTC50m
2026-07-20 THY4RM VKO → AYT Jul 20, 20:30 UTCJul 20, 21:25 UTC55m
2026-07-20 THY6DX - Jul 20, 18:30 UTCJul 20, 19:20 UTC50m
2026-07-20 THY9QW - Jul 20, 05:35 UTCJul 20, 06:25 UTC50m
2026-07-19 THY3AB - Jul 19, 17:20 UTCJul 20, 03:40 UTC10h 20m
2026-07-19 THY4UD - Jul 19, 10:45 UTCJul 19, 14:15 UTC3h 30m
2026-07-19 THY1EM DLM → LED Jul 19, 04:55 UTCJul 19, 08:25 UTC3h 30m
2026-07-18 THY3AB - Jul 18, 17:05 UTCJul 19, 03:10 UTC10h 5m
2026-07-18 THY4UD - Jul 18, 10:40 UTCJul 18, 14:20 UTC3h 40m
2026-07-18 THY1EM - Jul 18, 05:00 UTCJul 18, 08:40 UTC3h 40m
2026-07-17 THY5TV - Jul 17, 17:44 UTCJul 18, 03:35 UTC9h 51m
2026-07-17 THY9EH - Jul 17, 14:55 UTCJul 17, 15:35 UTC40m
2026-07-17 THY3DU - Jul 17, 10:44 UTCJul 17, 11:39 UTC55m
2026-07-17 THY95M - Jul 17, 08:40 UTCJul 17, 09:35 UTC55m
2026-07-17 THY1FE - Jul 17, 06:00 UTCJul 17, 06:54 UTC55m
2026-07-17 THY6WR IST → BJV Jul 17, 03:55 UTCJul 17, 04:39 UTC45m
2026-07-16 THY7HL - Jul 16, 20:09 UTCJul 16, 21:00 UTC50m
2026-07-16 THY4GE - Jul 16, 18:10 UTCJul 16, 18:59 UTC50m
2026-07-16 THY5197 MED → IST Jul 16, 07:20 UTCJul 16, 16:05 UTC8h 45m
2026-07-15 THY6GT - Jul 15, 18:45 UTCJul 15, 22:15 UTC3h 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-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 Jul 26, 14:05 UTC.
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, THY4UD, THY9CM.