Apparatus

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sensors Mode-S transponder

4BB1AB

ICAO 24-bit transponder address · allocated to Turkey

Currently assigned to TC-LMK · DASSAULT Falcon 6X

Hex
4BB1AB
Octal
22730653
Decimal
4,960,683
Country
TR
Tail
TC-LMK
Type
FA6X
No current signal · last broadcast 16h ago
Flights observed
66
Distinct callsigns
1
Country
TR
Last broadcast
16h ago

Last known position

Most recent position reported by Mode-S 4BB1AB.

Country allocation

The ICAO 24-bit address 4BB1AB 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 1 distinct

Callsign Airline Flights Last seen
TCLMK - 66 2026-07-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 TCLMK - Jul 17, 13:55 UTCJul 17, 14:35 UTC40m
2026-07-17 TCLMK - Jul 17, 11:50 UTCJul 17, 12:45 UTC55m
2026-07-16 TCLMK - Jul 16, 15:05 UTCJul 16, 17:30 UTC2h 25m
2026-07-16 TCLMK - Jul 16, 05:50 UTCJul 16, 06:10 UTC20m
2026-07-16 TCLMK - Jul 16, 04:20 UTCJul 16, 04:50 UTC30m
2026-07-14 TCLMK - Jul 14, 09:15 UTCJul 14, 18:15 UTC9h 0m
2026-07-13 TCLMK - Jul 13, 16:30 UTCJul 13, 17:00 UTC30m
2026-07-03 TCLMK - Jul 3, 15:15 UTCJul 3, 15:45 UTC30m
2026-07-03 TCLMK - Jul 3, 13:00 UTCJul 3, 14:30 UTC1h 30m
2026-07-02 TCLMK - Jul 2, 12:10 UTCJul 2, 13:50 UTC1h 40m
2026-07-01 TCLMK - Jul 1, 13:35 UTCJul 1, 16:20 UTC2h 45m
2026-06-30 TCLMK - Jun 30, 16:40 UTCJun 30, 19:35 UTC2h 55m
2026-06-30 TCLMK - Jun 30, 14:55 UTCJun 30, 15:25 UTC30m
2026-06-27 TCLMK - Jun 27, 12:25 UTCJun 27, 13:04 UTC40m
2026-06-26 TCLMK - Jun 26, 20:34 UTCJun 26, 21:15 UTC40m
2026-06-25 TCLMK - Jun 25, 15:24 UTCJun 25, 15:44 UTC20m
2026-06-25 TCLMK - Jun 25, 10:25 UTCJun 25, 14:24 UTC4h 0m
2026-06-22 TCLMK - Jun 22, 23:29 UTCJun 23, 14:19 UTC14h 50m
2026-06-21 TCLMK - Jun 21, 17:15 UTCJun 21, 17:35 UTC20m
2026-06-21 TCLMK - Jun 21, 14:15 UTCJun 21, 15:05 UTC50m
2026-06-21 TCLMK - Jun 21, 11:55 UTCJun 21, 12:40 UTC45m
2026-06-20 TCLMK - Jun 20, 08:55 UTCJun 20, 09:39 UTC45m
2026-06-19 TCLMK LBG → ISL Jun 19, 17:39 UTCJun 19, 20:34 UTC2h 55m
2026-06-17 TCLMK LBG → LBG Jun 17, 10:30 UTCJun 17, 10:50 UTC20m
2026-06-10 TCLMK - Jun 10, 19:30 UTCJun 10, 21:45 UTC2h 15m
2026-06-07 TCLMK - Jun 7, 14:40 UTCJun 7, 15:00 UTC20m
2026-06-07 TCLMK - Jun 7, 11:00 UTCJun 7, 11:25 UTC25m
2026-06-06 TCLMK - Jun 6, 05:40 UTCJun 6, 06:00 UTC20m
2026-06-04 TCLMK - Jun 4, 10:10 UTCJun 4, 10:35 UTC25m
2026-06-03 TCLMK - Jun 3, 07:30 UTCJun 3, 07:50 UTC20m
2026-06-02 TCLMK - Jun 2, 07:20 UTCJun 2, 07:50 UTC30m
2026-05-31 TCLMK - May 31, 13:00 UTCMay 31, 13:25 UTC25m
2026-05-31 TCLMK - May 31, 10:50 UTCMay 31, 12:25 UTC1h 35m
2026-05-31 TCLMK - May 31, 08:50 UTCMay 31, 09:35 UTC45m
2026-05-23 TCLMK - May 23, 14:00 UTCMay 23, 14:40 UTC40m
2026-05-23 TCLMK - May 23, 13:05 UTCMay 23, 13:25 UTC20m
2026-05-23 TCLMK - May 23, 10:00 UTCMay 23, 12:00 UTC2h 0m
2026-05-21 TCLMK - May 21, 10:55 UTCMay 21, 11:05 UTC10m
2026-05-20 TCLMK - May 20, 14:10 UTCMay 20, 14:30 UTC20m
2026-05-18 TCLMK - May 18, 16:50 UTCMay 19, 12:20 UTC19h 29m
2026-05-18 TCLMK - May 18, 16:25 UTCMay 19, 12:20 UTC19h 54m
2026-05-11 TCLMK - May 11, 08:40 UTCMay 11, 10:55 UTC2h 15m
2026-05-09 TCLMK - May 9, 13:40 UTCMay 9, 17:05 UTC3h 25m
2026-05-05 TCLMK - May 5, 16:20 UTCMay 5, 16:30 UTC10m
2026-05-03 TCLMK - May 3, 13:10 UTCMay 3, 13:25 UTC15m
2026-04-30 TCLMK - Apr 30, 14:15 UTCApr 30, 14:30 UTC15m
2026-04-30 TCLMK - Apr 30, 13:20 UTCApr 30, 14:00 UTC40m
2026-04-29 TCLMK - Apr 29, 22:10 UTCApr 29, 22:20 UTC10m
2026-04-29 TCLMK - Apr 29, 16:30 UTCApr 29, 19:20 UTC2h 50m
2026-04-29 TCLMK - Apr 29, 03:24 UTCApr 29, 07:45 UTC4h 20m

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

Mode-S 4BB1AB frequently asked

What is Mode-S code 4BB1AB?
4BB1AB is an ICAO 24-bit transponder address. Allocated to Turkey. Assigned to TC-LMK.
Where is Mode-S 4BB1AB registered?
Mode-S code 4BB1AB is allocated to Turkey (TR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4BB1AB broadcasting right now?
No active broadcast right now. Last signal was 16h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4BB1AB, octal 22730653, decimal 4,960,683.
What flights does 4BB1AB operate?
Mode-S 4BB1AB has broadcast 1 distinct callsign, including TCLMK.