sensors Mode-S transponder

4BB284

ICAO 24-bit transponder address · allocated to Turkey

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

Hex
4BB284
Octal
22731204
Decimal
4,960,900
Country
TR
Tail
TC-LTD
Type
A21N
No current signal · last broadcast 17h ago
Flights observed
11
Distinct callsigns
9
Country
TR
Last broadcast
17h ago

Last known position

Most recent position reported by Mode-S 4BB284.

Country allocation

The ICAO 24-bit address 4BB284 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 9 distinct

Callsign Airline Flights Last seen
THY77T - 2 2026-04-13
THY6LD Turkish Airlines 2 2026-04-14
THY9SG - 1 2026-04-13
THY9JL - 1 2026-04-12
THY88H - 1 2026-04-13
THY5RC - 1 2026-04-13
THY3UY Turkish Airlines 1 2026-04-13
THY2XS Turkish Airlines 1 2026-04-14
THY1QH - 1 2026-04-13

Recent flights last 11

DateFlightRouteTakeoffLandingDuration
2026-04-14 THY6LD PRG → IST Apr 14, 09:10 UTCApr 14, 09:20 UTC10m
2026-04-14 THY6LD PRG → IST Apr 14, 07:25 UTCApr 14, 09:05 UTC1h 40m
2026-04-14 THY2XS AGP → IST Apr 14, 05:15 UTCApr 14, 06:10 UTC55m
2026-04-13 THY5RC - Apr 13, 23:10 UTCApr 13, 23:35 UTC25m
2026-04-13 THY9SG - Apr 13, 21:15 UTCApr 13, 22:10 UTC55m
2026-04-13 THY1QH - Apr 13, 17:05 UTCApr 13, 19:15 UTC2h 10m
2026-04-13 THY3UY BCN → IST Apr 13, 13:15 UTCApr 13, 15:40 UTC2h 25m
2026-04-13 THY77T - Apr 13, 08:20 UTCApr 13, 09:15 UTC55m
2026-04-13 THY77T - Apr 13, 08:00 UTCApr 13, 09:15 UTC1h 15m
2026-04-13 THY88H - Apr 13, 05:00 UTCApr 13, 08:15 UTC3h 15m
2026-04-12 THY9JL - Apr 12, 17:15 UTCApr 12, 19:15 UTC2h 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-LTD page for operator, model, and routing details .

Mode-S 4BB284 frequently asked

What is Mode-S code 4BB284?
4BB284 is an ICAO 24-bit transponder address. Allocated to Turkey. Assigned to TC-LTD.
Where is Mode-S 4BB284 registered?
Mode-S code 4BB284 is allocated to Turkey (TR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4BB284 broadcasting right now?
No active broadcast right now. Last signal was 17h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4BB284, octal 22731204, decimal 4,960,900.
What flights does 4BB284 operate?
Mode-S 4BB284 has broadcast 9 distinct callsigns, including THY77T, THY6LD, THY9SG, THY9JL, THY88H.