Apparatus

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sensors Mode-S transponder

4BB143

ICAO 24-bit transponder address · allocated to Turkey

Currently assigned to TC-LJC · BOEING 777-300ER

Hex
4BB143
Octal
22730503
Decimal
4,960,579
Country
TR
Tail
TC-LJC
Type
B77W
No current signal · last broadcast 1h ago
Flights observed
237
Distinct callsigns
20
Country
TR
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 4BB143.

Country allocation

The ICAO 24-bit address 4BB143 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
THY73 - 15 2026-07-02
THY9 Turkish Airlines 11 2026-06-14
THY10 Turkish Airlines 10 2026-06-15
THY71 Turkish Airlines 8 2026-06-02
THY55 - 8 2026-07-13
THY72 Turkish Airlines 7 2026-06-30
THY80E Turkish Airlines 6 2026-06-12
THY6 - 6 2026-07-07
THY5KM Turkish Airlines 6 2026-06-20
THY54 - 6 2026-07-11
THY5 Turkish Airlines 6 2026-07-06
THY310 Turkish Airlines 6 2026-04-18
THY2AY - 6 2026-06-21
THY199 Turkish Airlines 6 2026-06-11
THY4YH Turkish Airlines 5 2026-06-12
THY25 - 5 2026-07-10
THY24 - 5 2026-07-08
THY21 - 5 2026-07-08
THY198 Turkish Airlines 5 2026-06-09
THY99D - 4 2026-07-11

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 THY32G - Jul 14, 02:20 UTCJul 14, 12:45 UTC10h 25m
2026-07-13 THY31K - Jul 13, 12:15 UTCJul 13, 23:20 UTC11h 5m
2026-07-13 THY2NP - Jul 13, 07:55 UTCJul 13, 08:40 UTC45m
2026-07-13 THY3YH - Jul 13, 05:25 UTCJul 13, 06:01 UTC35m
2026-07-13 THY55 - Jul 13, 01:30 UTCJul 13, 01:45 UTC15m
2026-07-12 THY55 - Jul 12, 15:35 UTCJul 13, 00:50 UTC9h 15m
2026-07-11 THY54 - Jul 11, 23:15 UTCJul 12, 08:55 UTC9h 40m
2026-07-11 THY99D - Jul 11, 06:15 UTCJul 11, 17:05 UTC10h 50m
2026-07-10 THY77J - Jul 10, 13:20 UTCJul 11, 00:55 UTC11h 35m
2026-07-10 THY8XS - Jul 10, 08:35 UTCJul 10, 09:40 UTC1h 5m
2026-07-10 THY8HX - Jul 10, 05:55 UTCJul 10, 06:45 UTC50m
2026-07-10 THY25 - Jul 10, 01:10 UTCJul 10, 01:25 UTC15m
2026-07-09 THY25 - Jul 9, 14:05 UTCJul 10, 00:25 UTC10h 20m
2026-07-08 THY24 - Jul 8, 22:50 UTCJul 9, 09:40 UTC10h 50m
2026-07-08 THY3AX - Jul 8, 19:20 UTCJul 8, 20:15 UTC55m
2026-07-08 THY2XQ - Jul 8, 16:30 UTCJul 8, 17:25 UTC55m
2026-07-08 THY21 - Jul 8, 12:25 UTCJul 8, 12:45 UTC20m
2026-07-08 THY21 - Jul 8, 10:20 UTCJul 8, 11:40 UTC1h 20m
2026-07-08 THY21 - Jul 8, 01:55 UTCJul 8, 02:10 UTC15m
2026-07-07 THY20 IST → ICN Jul 7, 23:00 UTCJul 7, 23:15 UTC15m
2026-07-07 THY20 IST → ICN Jul 7, 14:25 UTCJul 7, 22:10 UTC7h 45m
2026-07-07 THY6 - Jul 7, 01:35 UTCJul 7, 11:10 UTC9h 35m
2026-07-06 THY5 IST → ORD Jul 6, 12:10 UTCJul 6, 23:00 UTC10h 50m
2026-07-06 THY66C - Jul 6, 08:20 UTCJul 6, 09:10 UTC50m
2026-07-06 THY5AB - Jul 6, 05:40 UTCJul 6, 06:40 UTC1h 0m
2026-07-05 THY27 PVG → IST Jul 5, 23:30 UTCJul 6, 01:50 UTC2h 20m
2026-07-04 THY26 - Jul 4, 22:45 UTCJul 5, 00:35 UTC1h 50m
2026-07-04 THY7ER - Jul 4, 17:50 UTCJul 4, 18:35 UTC45m
2026-07-04 THY1FC - Jul 4, 15:05 UTCJul 4, 15:55 UTC50m
2026-07-04 THY32G - Jul 4, 02:15 UTCJul 4, 12:15 UTC10h 0m
2026-07-03 THY31K IST → ATL Jul 3, 12:20 UTCJul 3, 23:40 UTC11h 20m
2026-07-03 THY2 - Jul 3, 00:50 UTCJul 3, 09:35 UTC8h 45m
2026-07-02 THY1 IST → JFK Jul 2, 11:40 UTCJul 2, 21:40 UTC10h 0m
2026-07-02 THY6KL - Jul 2, 07:50 UTCJul 2, 08:45 UTC55m
2026-07-02 THY8FW - Jul 2, 04:45 UTCJul 2, 05:45 UTC1h 0m
2026-07-02 THY73 - Jul 2, 01:50 UTCJul 2, 02:05 UTC15m
2026-07-01 THY73 - Jul 1, 16:20 UTCJul 2, 01:05 UTC8h 45m
2026-07-01 THY73 - Jul 1, 05:00 UTCJul 2, 01:05 UTC20h 5m
2026-07-01 THY73 - Jul 1, 03:15 UTCJul 2, 01:05 UTC21h 50m
2026-07-01 THY73 - Jul 1, 00:50 UTCJul 2, 00:45 UTC23h 55m
2026-06-30 THY72 IST → CAN Jun 30, 23:05 UTCJul 1, 20:20 UTC21h 15m
2026-06-30 THY8LV - Jun 30, 03:15 UTCJun 30, 12:20 UTC9h 5m
2026-06-29 THY1GJ VKO → ESB Jun 29, 14:29 UTCJun 30, 00:09 UTC9h 40m
2026-06-29 THY6 - Jun 29, 01:20 UTCJun 29, 11:29 UTC10h 10m
2026-06-28 THY5 IST → ORD Jun 28, 12:35 UTCJun 28, 22:59 UTC10h 25m
2026-06-28 THY66C - Jun 28, 08:14 UTCJun 28, 09:15 UTC1h 0m
2026-06-28 THY5AB - Jun 28, 05:34 UTCJun 28, 06:20 UTC45m
2026-06-28 THY89 PEK → IST Jun 28, 00:00 UTCJun 28, 02:10 UTC2h 10m
2026-06-27 THY88 IST → PEK Jun 27, 06:35 UTCJun 27, 06:50 UTC15m
2026-06-26 THY88 IST → PEK Jun 26, 23:04 UTCJun 27, 00:55 UTC1h 50m

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

Mode-S 4BB143 frequently asked

What is Mode-S code 4BB143?
4BB143 is an ICAO 24-bit transponder address. Allocated to Turkey. Assigned to TC-LJC.
Where is Mode-S 4BB143 registered?
Mode-S code 4BB143 is allocated to Turkey (TR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4BB143 broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4BB143, octal 22730503, decimal 4,960,579.
What flights does 4BB143 operate?
Mode-S 4BB143 has broadcast 20 distinct callsigns, including THY73, THY9, THY10, THY71, THY55.