sensors Mode-S transponder

4BB2B2

ICAO 24-bit transponder address · allocated to Turkey

Currently assigned to TC-LUR · AIRBUS A-321neo

Hex
4BB2B2
Octal
22731262
Decimal
4,960,946
Country
TR
Tail
TC-LUR
Type
A21N
No current signal · last broadcast 16h ago
Flights observed
9
Distinct callsigns
7
Country
TR
Last broadcast
16h ago

Last known position

Most recent position reported by Mode-S 4BB2B2.

Country allocation

The ICAO 24-bit address 4BB2B2 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 7 distinct

Callsign Airline Flights Last seen
TKJ3MQ - 2 2026-04-13
TKJ1KE Tarkim Havacilik 2 2026-04-14
TKJ8UY - 1 2026-04-14
TKJ4NB - 1 2026-04-12
TKJ4LT - 1 2026-04-13
TKJ2FM - 1 2026-04-13
TKJ1QC - 1 2026-04-13

Recent flights last 9

DateFlightRouteTakeoffLandingDuration
2026-04-14 TKJ8UY - Apr 14, 10:45 UTCApr 14, 11:05 UTC20m
2026-04-14 TKJ1KE ESB → CGN Apr 14, 07:10 UTCApr 14, 09:05 UTC1h 55m
2026-04-14 TKJ1KE ESB → CGN Apr 14, 06:10 UTCApr 14, 07:10 UTC1h 0m
2026-04-13 TKJ4LT - Apr 13, 23:20 UTCApr 13, 23:40 UTC20m
2026-04-13 TKJ2FM - Apr 13, 12:45 UTCApr 13, 13:20 UTC35m
2026-04-13 TKJ1QC - Apr 13, 10:15 UTCApr 13, 11:15 UTC1h 0m
2026-04-13 TKJ3MQ - Apr 13, 00:20 UTCApr 13, 00:40 UTC20m
2026-04-12 TKJ3MQ - Apr 12, 23:55 UTCApr 13, 00:40 UTC45m
2026-04-12 TKJ4NB - Apr 12, 17:15 UTCApr 12, 20:15 UTC3h 0m

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

Mode-S 4BB2B2 frequently asked

What is Mode-S code 4BB2B2?
4BB2B2 is an ICAO 24-bit transponder address. Allocated to Turkey. Assigned to TC-LUR.
Where is Mode-S 4BB2B2 registered?
Mode-S code 4BB2B2 is allocated to Turkey (TR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4BB2B2 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 4BB2B2, octal 22731262, decimal 4,960,946.
What flights does 4BB2B2 operate?
Mode-S 4BB2B2 has broadcast 7 distinct callsigns, including TKJ3MQ, TKJ1KE, TKJ8UY, TKJ4NB, TKJ4LT.