Apparatus

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sensors Mode-S transponder

4BB273

ICAO 24-bit transponder address · allocated to Turkey

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

Hex
4BB273
Octal
22731163
Decimal
4,960,883
Country
TR
Tail
TC-LSS
Type
A21N
No current signal · last broadcast Jul 26, 03:10 UTC
Flights observed
365
Distinct callsigns
20
Country
TR
Last broadcast
Jul 26, 03:10 UTC

Last known position

Most recent position reported by Mode-S 4BB273.

Country allocation

The ICAO 24-bit address 4BB273 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
THY1WN Turkish Airlines 8 2026-07-19
THY1MW - 8 2026-07-19
THY6GF - 6 2026-07-15
THY1UC - 6 2026-07-15
THY8QD Turkish Airlines 5 2026-06-12
THY451 Turkish Airlines 5 2026-07-25
THY355 - 5 2026-07-09
THY9XH Turkish Airlines 4 2026-07-23
THY4BZ Turkish Airlines 4 2026-07-23
THY39P - 4 2026-07-16
THY33C - 4 2026-07-17
THY2SE Turkish Airlines 4 2026-07-25
THY255 - 4 2026-07-07
THY1EF - 4 2026-07-15
THY8SU - 3 2026-07-04
THY7UF - 3 2026-07-14
THY6VM Turkish Airlines 3 2026-05-26
THY6NU - 3 2026-07-17
THY5XV - 3 2026-07-04
THY4XL - 3 2026-07-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 THY451 ALA → IST Jul 25, 14:55 UTCJul 26, 03:10 UTC12h 15m
2026-07-25 THY2SE IST → ISE Jul 25, 11:55 UTCJul 25, 12:20 UTC25m
2026-07-25 THY2SE IST → ISE Jul 25, 09:20 UTCJul 25, 10:45 UTC1h 25m
2026-07-25 THY4CK IST → ARN Jul 25, 04:45 UTCJul 25, 07:50 UTC3h 5m
2026-07-24 THY151 DMM → IST Jul 24, 17:35 UTCJul 25, 02:10 UTC8h 35m
2026-07-24 THY3JW AYT → IST Jul 24, 14:25 UTCJul 24, 15:30 UTC1h 5m
2026-07-24 THY9DX IST → EAP Jul 24, 11:40 UTCJul 24, 12:50 UTC1h 10m
2026-07-24 THY8JE STR → IST Jul 24, 08:15 UTCJul 24, 09:55 UTC1h 40m
2026-07-24 THY5TK IST → NAP Jul 24, 04:35 UTCJul 24, 06:35 UTC2h 0m
2026-07-23 THY7WH DIY → IST Jul 23, 22:15 UTCJul 24, 02:25 UTC4h 10m
2026-07-23 THY9XH IST → EDI Jul 23, 17:10 UTCJul 23, 20:15 UTC3h 5m
2026-07-23 THY4BZ VLC → IST Jul 23, 12:40 UTCJul 23, 15:40 UTC3h 0m
2026-07-23 THY77T DNZ → IST Jul 23, 04:00 UTCJul 23, 10:30 UTC6h 30m
2026-07-22 THY1DB - Jul 22, 16:10 UTCJul 22, 20:00 UTC3h 50m
2026-07-22 THY4GH SAW → DUS Jul 22, 10:20 UTCJul 22, 14:40 UTC4h 20m
2026-07-22 THY2QY IST → VAR Jul 22, 04:50 UTCJul 22, 05:25 UTC35m
2026-07-21 THY4TA CAI → IST Jul 21, 19:30 UTCJul 21, 21:05 UTC1h 35m
2026-07-21 THY3PC - Jul 21, 15:50 UTCJul 21, 17:25 UTC1h 35m
2026-07-21 THY8HP GOT → IST Jul 21, 08:40 UTCJul 21, 11:40 UTC3h 0m
2026-07-21 THY9XN IST → GOT Jul 21, 04:25 UTCJul 21, 07:20 UTC2h 55m
2026-07-20 THY2DQ - Jul 20, 17:35 UTCJul 20, 20:05 UTC2h 30m
2026-07-20 THY3PH - Jul 20, 13:10 UTCJul 20, 15:55 UTC2h 45m
2026-07-20 THY88H IST → GYD Jul 20, 04:05 UTCJul 20, 10:10 UTC6h 5m
2026-07-19 THY7QN MAN → IST Jul 19, 22:15 UTCJul 20, 01:40 UTC3h 25m
2026-07-19 THY9GV - Jul 19, 17:10 UTCJul 19, 20:55 UTC3h 45m
2026-07-19 THY1MW - Jul 19, 10:55 UTCJul 19, 14:35 UTC3h 40m
2026-07-19 THY1WN IST → LGW Jul 19, 04:25 UTCJul 19, 08:25 UTC4h 0m
2026-07-18 THY6EZ DUS → IST Jul 18, 18:40 UTCJul 18, 21:30 UTC2h 50m
2026-07-18 THY5KP IST → MUC Jul 18, 14:15 UTCJul 18, 17:05 UTC2h 50m
2026-07-18 THY2SE IST → ISE Jul 18, 09:10 UTCJul 18, 12:25 UTC3h 15m
2026-07-18 THY4CK IST → ARN Jul 18, 04:45 UTCJul 18, 07:35 UTC2h 50m
2026-07-17 THY6NU - Jul 17, 17:30 UTCJul 17, 20:04 UTC2h 35m
2026-07-17 THY33C - Jul 17, 13:20 UTCJul 17, 16:10 UTC2h 50m
2026-07-17 THY1BC - Jul 17, 08:45 UTCJul 17, 11:20 UTC2h 35m
2026-07-17 THY8VN VIE → ESB Jul 17, 04:29 UTCJul 17, 07:20 UTC2h 50m
2026-07-16 THY7JK EBL → IST Jul 16, 18:34 UTCJul 17, 01:15 UTC6h 40m
2026-07-16 THY7AT - Jul 16, 13:45 UTCJul 16, 15:55 UTC2h 10m
2026-07-16 THY40B - Jul 16, 10:00 UTCJul 16, 12:09 UTC2h 10m
2026-07-16 THY39P - Jul 16, 05:30 UTCJul 16, 08:15 UTC2h 45m
2026-07-15 THY1EF - Jul 15, 16:15 UTCJul 15, 19:30 UTC3h 15m
2026-07-15 THY6GF - Jul 15, 10:10 UTCJul 15, 13:45 UTC3h 35m
2026-07-15 THY1UC - Jul 15, 04:35 UTCJul 15, 08:35 UTC4h 0m
2026-07-14 THY7UF - Jul 14, 17:00 UTCJul 14, 20:50 UTC3h 50m
2026-07-14 THY2UK - Jul 14, 10:55 UTCJul 14, 14:50 UTC3h 55m
2026-07-14 THY9LT - Jul 14, 07:40 UTCJul 14, 08:55 UTC1h 15m
2026-07-14 THY5LW - Jul 14, 04:55 UTCJul 14, 05:55 UTC1h 0m
2026-07-13 THY371 - Jul 13, 15:40 UTCJul 14, 02:30 UTC10h 50m
2026-07-13 THY3XR - Jul 13, 10:25 UTCJul 13, 13:35 UTC3h 10m
2026-07-13 THY6DL - Jul 13, 05:31 UTCJul 13, 09:00 UTC3h 30m
2026-07-13 THY347 - Jul 13, 01:40 UTCJul 13, 01:55 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-LSS page for operator, model, and routing details .

Mode-S 4BB273 frequently asked

What is Mode-S code 4BB273?
4BB273 is an ICAO 24-bit transponder address. Allocated to Turkey. Assigned to TC-LSS.
Where is Mode-S 4BB273 registered?
Mode-S code 4BB273 is allocated to Turkey (TR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4BB273 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 03:10 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4BB273, octal 22731163, decimal 4,960,883.
What flights does 4BB273 operate?
Mode-S 4BB273 has broadcast 20 distinct callsigns, including THY1WN, THY1MW, THY6GF, THY1UC, THY8QD.