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sensors Mode-S transponder

4BA9AB

ICAO 24-bit transponder address · allocated to Turkey

Currently assigned to TC-JMK · AIRBUS A-321

Hex
4BA9AB
Octal
22724653
Decimal
4,958,635
Country
TR
Tail
TC-JMK
Type
A321
No current signal · last broadcast Jul 23, 18:20 UTC
Flights observed
333
Distinct callsigns
20
Country
TR
Last broadcast
Jul 23, 18:20 UTC

Last known position

Most recent position reported by Mode-S 4BA9AB.

Country allocation

The ICAO 24-bit address 4BA9AB 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
THY6WR - 13 2026-07-03
THY1FE - 13 2026-07-03
THY7PW - 10 2026-07-13
THY2MT - 10 2026-07-13
THY6DT Turkish Airlines 9 2026-07-21
THY1QU Turkish Airlines 9 2026-07-21
THY6AC Turkish Airlines 7 2026-07-21
THY5SX Turkish Airlines 7 2026-07-21
THY5JN - 7 2026-07-14
THY4MJ - 7 2026-07-14
THY3UQ - 7 2026-07-12
THY7VK Turkish Airlines 6 2026-07-20
THY6GU - 6 2026-07-20
THY1NE - 5 2026-07-12
THY6GT Turkish Airlines 4 2026-07-21
THY4VY Turkish Airlines 4 2026-07-16
THY2TY - 4 2026-07-16
THY87N Turkish Airlines 3 2026-07-18
THY7VL - 3 2026-07-19
THY7HL - 3 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-23 THY6963 - Jul 23, 17:55 UTCJul 23, 18:20 UTC25m
2026-07-23 THY4VX ADB → IST Jul 23, 15:10 UTCJul 23, 15:55 UTC45m
2026-07-23 THY1WS IST → ADB Jul 23, 13:20 UTCJul 23, 14:05 UTC45m
2026-07-22 THY3GL KYA → IST Jul 22, 20:40 UTCJul 22, 21:10 UTC30m
2026-07-22 THY3GL KYA → IST Jul 22, 19:20 UTCJul 22, 20:00 UTC40m
2026-07-22 THY6ZS IST → BUS Jul 22, 18:00 UTCJul 22, 18:10 UTC10m
2026-07-22 THY6ZS IST → BUS Jul 22, 16:45 UTCJul 22, 17:15 UTC30m
2026-07-22 THY4BS IST → ESB Jul 22, 04:15 UTCJul 22, 04:40 UTC25m
2026-07-21 THY6GT CDG → IST Jul 21, 18:35 UTCJul 21, 22:15 UTC3h 40m
2026-07-21 THY5SX IST → SZF Jul 21, 15:40 UTCJul 21, 16:35 UTC55m
2026-07-21 THY6AC NCE → IST Jul 21, 13:45 UTCJul 21, 14:40 UTC55m
2026-07-21 THY1QU IST → BHX Jul 21, 11:10 UTCJul 21, 12:10 UTC1h 0m
2026-07-21 THY6DT IST → AYT Jul 21, 08:55 UTCJul 21, 09:45 UTC50m
2026-07-21 THY7MV AYT → IST Jul 21, 06:00 UTCJul 21, 06:55 UTC55m
2026-07-21 THY2TF IST → AYT Jul 21, 03:35 UTCJul 21, 04:30 UTC55m
2026-07-20 THY2QT - Jul 20, 17:35 UTCJul 20, 18:15 UTC40m
2026-07-20 THY6RZ WAW → IST Jul 20, 14:55 UTCJul 20, 15:30 UTC35m
2026-07-20 THY7VK BJV → IST Jul 20, 12:00 UTCJul 20, 12:50 UTC50m
2026-07-20 THY6GU - Jul 20, 09:50 UTCJul 20, 10:40 UTC50m
2026-07-20 THY6CY IST → ZAG Jul 20, 06:30 UTCJul 20, 07:00 UTC30m
2026-07-20 THY2118 IST → ESB Jul 20, 04:35 UTCJul 20, 05:00 UTC25m
2026-07-19 THY80R SKG → IST Jul 19, 18:25 UTCJul 19, 19:20 UTC55m
2026-07-19 THY2VB - Jul 19, 16:25 UTCJul 19, 17:15 UTC50m
2026-07-19 THY1XT BJV → SAW Jul 19, 13:15 UTCJul 19, 14:05 UTC50m
2026-07-19 THY1NQ - Jul 19, 11:05 UTCJul 19, 11:55 UTC50m
2026-07-19 THY7VL - Jul 19, 07:15 UTCJul 19, 08:40 UTC1h 25m
2026-07-19 THY6LJ ECN → IST Jul 19, 04:05 UTCJul 19, 05:20 UTC1h 15m
2026-07-18 THY87N ASR → SAW Jul 18, 15:45 UTCJul 18, 19:50 UTC4h 5m
2026-07-18 THY9GQ ISL → NCE Jul 18, 12:15 UTCJul 18, 13:00 UTC45m
2026-07-18 THY2PL - Jul 18, 10:15 UTCJul 18, 10:50 UTC35m
2026-07-17 THY3UJ - Jul 17, 18:50 UTCJul 17, 19:15 UTC25m
2026-07-17 THY2MB - Jul 17, 14:35 UTCJul 17, 18:10 UTC3h 35m
2026-07-17 THY2KF CLJ → IST Jul 17, 08:35 UTCJul 17, 12:55 UTC4h 20m
2026-07-16 THY4VY ADB → IST Jul 16, 20:19 UTCJul 16, 21:00 UTC40m
2026-07-16 THY2TY - Jul 16, 18:19 UTCJul 16, 18:59 UTC40m
2026-07-16 THY4DP - Jul 16, 14:50 UTCJul 16, 15:14 UTC25m
2026-07-16 THY8RC - Jul 16, 11:54 UTCJul 16, 12:20 UTC25m
2026-07-15 THY7ZH - Jul 15, 14:50 UTCJul 15, 15:20 UTC30m
2026-07-15 THY7VK - Jul 15, 11:55 UTCJul 15, 12:55 UTC1h 0m
2026-07-15 THY6GU - Jul 15, 09:40 UTCJul 15, 10:35 UTC55m
2026-07-15 THY1VN - Jul 15, 06:10 UTCJul 15, 06:50 UTC40m
2026-07-15 THY9QS - Jul 15, 03:30 UTCJul 15, 04:55 UTC1h 25m
2026-07-14 THY6GT - Jul 14, 18:30 UTCJul 14, 22:15 UTC3h 45m
2026-07-14 THY5SX - Jul 14, 15:50 UTCJul 14, 16:40 UTC50m
2026-07-14 THY6AC - Jul 14, 13:50 UTCJul 14, 14:40 UTC50m
2026-07-14 THY4MJ - Jul 14, 10:40 UTCJul 14, 11:20 UTC40m
2026-07-14 THY5JN - Jul 14, 08:45 UTCJul 14, 09:25 UTC40m
2026-07-13 THY7HL - Jul 13, 20:00 UTCJul 13, 20:50 UTC50m
2026-07-13 THY4GE - Jul 13, 18:00 UTCJul 13, 18:55 UTC55m
2026-07-13 THY3SF - Jul 13, 10:15 UTCJul 13, 13:25 UTC3h 10m

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

Mode-S 4BA9AB frequently asked

What is Mode-S code 4BA9AB?
4BA9AB is an ICAO 24-bit transponder address. Allocated to Turkey. Assigned to TC-JMK.
Where is Mode-S 4BA9AB registered?
Mode-S code 4BA9AB is allocated to Turkey (TR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4BA9AB broadcasting right now?
No active broadcast right now. Last signal was Jul 23, 18:20 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4BA9AB, octal 22724653, decimal 4,958,635.
What flights does 4BA9AB operate?
Mode-S 4BA9AB has broadcast 20 distinct callsigns, including THY6WR, THY1FE, THY7PW, THY2MT, THY6DT.