Apparatus

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sensors Mode-S transponder

4BB141

ICAO 24-bit transponder address · allocated to Turkey

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

Hex
4BB141
Octal
22730501
Decimal
4,960,577
Country
TR
Tail
TC-LJA
Type
B77W
No current signal · last broadcast 2h ago
Flights observed
233
Distinct callsigns
20
Country
TR
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 4BB141.

Country allocation

The ICAO 24-bit address 4BB141 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 - 11 2026-07-14
THY72 - 10 2026-07-13
THY91 Turkish Airlines 8 2026-06-16
THY85 - 8 2026-06-24
THY55 Turkish Airlines 8 2026-04-18
THY2XQ - 8 2026-07-02
THY90 - 7 2026-06-15
THY54 Turkish Airlines 7 2026-04-17
THY3AX - 7 2026-07-02
THY27 Turkish Airlines 7 2026-07-03
THY3MJ - 5 2026-07-10
THY21 Turkish Airlines 5 2026-05-29
THY20 Turkish Airlines 5 2026-05-28
THY199 - 5 2026-07-09
THY99D - 4 2026-07-13
THY88 Turkish Airlines 4 2026-06-30
THY84 - 4 2026-06-22
THY77J - 4 2026-07-12
THY5RM - 4 2026-06-27
THY5KM Turkish Airlines 4 2026-07-01

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 THY73 - Jul 14, 17:50 UTCJul 15, 00:15 UTC6h 24m
2026-07-13 THY72 - Jul 13, 22:45 UTCJul 14, 06:05 UTC7h 20m
2026-07-13 THY99D - Jul 13, 07:55 UTCJul 13, 18:10 UTC10h 15m
2026-07-12 THY77J - Jul 12, 13:05 UTCJul 13, 00:25 UTC11h 20m
2026-07-12 THY2 - Jul 12, 01:25 UTCJul 12, 10:15 UTC8h 50m
2026-07-11 THY1 - Jul 11, 11:45 UTCJul 11, 21:45 UTC10h 0m
2026-07-11 THY2YR - Jul 11, 07:15 UTCJul 11, 08:40 UTC1h 25m
2026-07-11 THY39GV - Jul 11, 04:10 UTCJul 11, 05:20 UTC1h 10m
2026-07-10 THY3EZ - Jul 10, 21:50 UTCJul 11, 00:25 UTC2h 35m
2026-07-10 THY7JR - Jul 10, 16:55 UTCJul 10, 20:00 UTC3h 5m
2026-07-10 THY3MJ - Jul 10, 11:35 UTCJul 10, 14:25 UTC2h 50m
2026-07-10 THY30S - Jul 10, 05:25 UTCJul 10, 08:55 UTC3h 30m
2026-07-09 THY4 - Jul 9, 17:25 UTCJul 10, 02:05 UTC8h 40m
2026-07-09 THY3 - Jul 9, 04:55 UTCJul 9, 15:00 UTC10h 5m
2026-07-09 THY199 - Jul 9, 00:45 UTCJul 9, 00:55 UTC10m
2026-07-08 THY199 - Jul 8, 12:55 UTCJul 8, 23:50 UTC10h 55m
2026-07-07 THY198 - Jul 7, 23:30 UTCJul 8, 09:55 UTC10h 25m
2026-07-07 THY10 LAX → IST Jul 7, 03:35 UTCJul 7, 15:45 UTC12h 10m
2026-07-06 THY9 IST → LAX Jul 6, 11:50 UTCJul 7, 00:55 UTC13h 5m
2026-07-06 THY2NP - Jul 6, 07:50 UTCJul 6, 08:35 UTC45m
2026-07-06 THY3YH - Jul 6, 05:30 UTCJul 6, 06:05 UTC35m
2026-07-06 THY73 - Jul 6, 01:40 UTCJul 6, 02:05 UTC25m
2026-07-05 THY73 - Jul 5, 16:35 UTCJul 6, 01:00 UTC8h 25m
2026-07-05 THY72 IST → CAN Jul 5, 01:20 UTCJul 5, 09:05 UTC7h 45m
2026-07-04 THY4HE - Jul 4, 10:00 UTCJul 4, 11:00 UTC1h 0m
2026-07-04 THY7SJ - Jul 4, 06:35 UTCJul 4, 07:25 UTC50m
2026-07-03 THY27 PVG → IST Jul 3, 18:50 UTCJul 4, 03:00 UTC8h 10m
2026-07-03 THY26 - Jul 3, 00:20 UTCJul 3, 22:40 UTC22h 20m
2026-07-02 THY26 - Jul 2, 23:15 UTCJul 3, 19:15 UTC20h 0m
2026-07-02 THY3AX - Jul 2, 19:50 UTCJul 2, 20:45 UTC55m
2026-07-02 THY2XQ - Jul 2, 16:20 UTCJul 2, 17:20 UTC1h 0m
2026-07-02 THY2AY - Jul 2, 02:30 UTCJul 2, 14:00 UTC11h 30m
2026-07-01 THY5KM IST → IAH Jul 1, 11:35 UTCJul 2, 00:10 UTC12h 35m
2026-07-01 THY6KL - Jul 1, 07:45 UTCJul 1, 08:35 UTC50m
2026-07-01 THY8FW - Jul 1, 04:50 UTCJul 1, 05:55 UTC1h 5m
2026-06-30 THY89 PEK → IST Jun 30, 16:30 UTCJun 30, 16:50 UTC20m
2026-06-30 THY88 IST → PEK Jun 30, 06:50 UTCJun 30, 07:00 UTC10m
2026-06-29 THY88 IST → PEK Jun 29, 22:59 UTCJun 30, 00:49 UTC1h 50m
2026-06-29 THY2NA - Jun 29, 18:30 UTCJun 29, 20:30 UTC2h 0m
2026-06-29 THY3GK IST → FCO Jun 29, 14:09 UTCJun 29, 16:10 UTC2h 0m
2026-06-29 THY89 PEK → IST Jun 29, 02:25 UTCJun 29, 02:39 UTC15m
2026-06-28 THY89 PEK → IST Jun 28, 17:04 UTCJun 29, 01:50 UTC8h 45m
2026-06-28 THY88 IST → PEK Jun 28, 07:09 UTCJun 28, 07:25 UTC15m
2026-06-27 THY88 IST → PEK Jun 27, 23:25 UTCJun 28, 01:10 UTC1h 45m
2026-06-27 THY3RU CMN → IST Jun 27, 16:04 UTCJun 27, 20:04 UTC4h 0m
2026-06-27 THY5RM - Jun 27, 09:29 UTCJun 27, 13:20 UTC3h 50m
2026-06-27 THY73 - Jun 27, 01:39 UTCJun 27, 02:04 UTC25m
2026-06-26 THY73 - Jun 26, 15:54 UTCJun 27, 01:04 UTC9h 10m
2026-06-26 THY72 IST → CAN Jun 26, 00:05 UTCJun 26, 06:09 UTC6h 5m
2026-06-25 THY72 IST → CAN Jun 25, 22:54 UTCJun 25, 23:19 UTC25m

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

Mode-S 4BB141 frequently asked

What is Mode-S code 4BB141?
4BB141 is an ICAO 24-bit transponder address. Allocated to Turkey. Assigned to TC-LJA.
Where is Mode-S 4BB141 registered?
Mode-S code 4BB141 is allocated to Turkey (TR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4BB141 broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4BB141, octal 22730501, decimal 4,960,577.
What flights does 4BB141 operate?
Mode-S 4BB141 has broadcast 20 distinct callsigns, including THY73, THY72, THY91, THY85, THY55.