sensors Mode-S transponder

4BB2A2

ICAO 24-bit transponder address · allocated to Turkey

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

Hex
4BB2A2
Octal
22731242
Decimal
4,960,930
Country
TR
Tail
TC-LUB
Type
A21N
No current signal · last broadcast 13h ago
Flights observed
11
Distinct callsigns
7
Country
TR
Last broadcast
13h ago

Last known position

Most recent position reported by Mode-S 4BB2A2.

Country allocation

The ICAO 24-bit address 4BB2A2 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
TKJ35Z - 3 2026-04-13
TKJ2JY - 3 2026-04-13
TKJ71U Tarkim Havacilik 1 2026-04-13
TKJ4LQ Tarkim Havacilik 1 2026-04-14
TKJ2SV - 1 2026-04-13
TKJ190 - 1 2026-04-13
TKJ189 Tarkim Havacilik 1 2026-04-12

Recent flights last 11

DateFlightRouteTakeoffLandingDuration
2026-04-14 TKJ4LQ SAW → STR Apr 14, 10:35 UTCApr 14, 11:05 UTC30m
2026-04-13 TKJ71U AMS → SAW Apr 13, 18:40 UTCApr 13, 19:30 UTC50m
2026-04-13 TKJ2SV - Apr 13, 16:25 UTCApr 13, 17:10 UTC45m
2026-04-13 TKJ2JY - Apr 13, 12:20 UTCApr 13, 13:30 UTC1h 10m
2026-04-13 TKJ2JY - Apr 13, 11:55 UTCApr 13, 13:30 UTC1h 35m
2026-04-13 TKJ2JY - Apr 13, 11:20 UTCApr 13, 12:15 UTC55m
2026-04-13 TKJ35Z - Apr 13, 08:20 UTCApr 13, 09:45 UTC1h 25m
2026-04-13 TKJ35Z - Apr 13, 07:55 UTCApr 13, 09:45 UTC1h 50m
2026-04-13 TKJ35Z - Apr 13, 07:20 UTCApr 13, 08:15 UTC55m
2026-04-13 TKJ190 - Apr 13, 01:40 UTCApr 13, 03:20 UTC1h 40m
2026-04-12 TKJ189 SAW → JED Apr 12, 20:00 UTCApr 12, 20:15 UTC15m

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

Mode-S 4BB2A2 frequently asked

What is Mode-S code 4BB2A2?
4BB2A2 is an ICAO 24-bit transponder address. Allocated to Turkey. Assigned to TC-LUB.
Where is Mode-S 4BB2A2 registered?
Mode-S code 4BB2A2 is allocated to Turkey (TR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4BB2A2 broadcasting right now?
No active broadcast right now. Last signal was 13h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4BB2A2, octal 22731242, decimal 4,960,930.
What flights does 4BB2A2 operate?
Mode-S 4BB2A2 has broadcast 7 distinct callsigns, including TKJ35Z, TKJ2JY, TKJ71U, TKJ4LQ, TKJ2SV.