Apparatus

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sensors Mode-S transponder

4BB181

ICAO 24-bit transponder address · allocated to Turkey

Currently assigned to TC-LLA · BOEING 787-9 Dreamliner

Hex
4BB181
Octal
22730601
Decimal
4,960,641
Country
TR
Tail
TC-LLA
Type
B789
No current signal · last broadcast 4h ago
Flights observed
188
Distinct callsigns
20
Country
TR
Last broadcast
4h ago

Last known position

Most recent position reported by Mode-S 4BB181.

Country allocation

The ICAO 24-bit address 4BB181 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
THY181 - 11 2026-07-11
THY281 - 9 2026-07-16
THY125 - 8 2026-07-19
THY91J Turkish Airlines 7 2026-07-18
THY7KG - 7 2026-07-17
THY4JD - 6 2026-07-13
THY41J - 6 2026-07-14
THY197 - 6 2026-07-17
THY124 Turkish Airlines 6 2026-07-18
THY89 Turkish Airlines 5 2026-07-26
THY88 Turkish Airlines 5 2026-07-25
THY5KM Turkish Airlines 5 2026-06-26
THY2AY - 5 2026-06-27
THY299 Turkish Airlines 5 2026-07-24
THY196 - 5 2026-07-16
THY171 Turkish Airlines 5 2026-06-10
THY8MT Turkish Airlines 4 2026-07-26
THY84U - 4 2026-07-08
THY67C - 4 2026-07-08
THY298 Turkish Airlines 4 2026-07-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 THY8MT IST → LAX Jul 26, 05:35 UTCJul 26, 09:05 UTC3h 31m
2026-07-26 THY89 PEK → IST Jul 26, 01:25 UTCJul 26, 01:45 UTC20m
2026-07-25 THY89 PEK → IST Jul 25, 23:30 UTCJul 26, 00:50 UTC1h 20m
2026-07-25 THY89 PEK → IST Jul 25, 16:35 UTCJul 25, 16:45 UTC10m
2026-07-25 THY88 IST → PEK Jul 25, 06:45 UTCJul 25, 07:10 UTC25m
2026-07-24 THY88 IST → PEK Jul 24, 23:20 UTCJul 25, 01:05 UTC1h 45m
2026-07-24 THY299 CAN → IST Jul 24, 14:45 UTCJul 24, 15:00 UTC15m
2026-07-23 THY299 CAN → IST Jul 23, 20:05 UTCJul 24, 14:05 UTC18h 0m
2026-07-23 THY298 IST → CAN Jul 23, 16:20 UTCJul 24, 14:05 UTC21h 45m
2026-07-23 THY298 IST → CAN Jul 23, 16:10 UTCJul 24, 14:05 UTC21h 55m
2026-07-23 THY299 CAN → IST Jul 23, 02:05 UTCJul 23, 11:40 UTC9h 35m
2026-07-22 THY298 IST → CAN Jul 22, 13:25 UTCJul 22, 20:20 UTC6h 55m
2026-07-21 THY12E LAX → IST Jul 21, 21:25 UTCJul 22, 04:45 UTC7h 20m
2026-07-21 THY8MT - Jul 21, 05:25 UTCJul 21, 18:55 UTC13h 30m
2026-07-20 THY25 - Jul 20, 13:55 UTCJul 21, 01:15 UTC11h 19m
2026-07-19 THY24 - Jul 19, 22:50 UTCJul 20, 09:25 UTC10h 35m
2026-07-19 THY125 - Jul 19, 02:00 UTCJul 19, 12:30 UTC10h 30m
2026-07-18 THY124 IST → TPE Jul 18, 13:15 UTCJul 18, 23:55 UTC10h 40m
2026-07-18 THY91J DTW → IST Jul 18, 01:05 UTCJul 18, 10:25 UTC9h 21m
2026-07-17 THY7KG - Jul 17, 12:19 UTCJul 17, 22:29 UTC10h 10m
2026-07-17 THY197 - Jul 17, 09:04 UTCJul 17, 09:30 UTC25m
2026-07-16 THY197 - Jul 16, 23:49 UTCJul 17, 08:30 UTC8h 40m
2026-07-16 THY196 - Jul 16, 14:05 UTCJul 16, 21:25 UTC7h 20m
2026-07-16 THY281 - Jul 16, 11:05 UTCJul 16, 11:25 UTC20m
2026-07-15 THY281 - Jul 15, 17:20 UTCJul 16, 10:29 UTC17h 10m
2026-07-15 THY280 - Jul 15, 13:00 UTCJul 15, 13:25 UTC25m
2026-07-15 THY9MV - Jul 15, 08:25 UTCJul 15, 10:20 UTC1h 55m
2026-07-15 THY6NP - Jul 15, 04:20 UTCJul 15, 06:10 UTC1h 50m
2026-07-14 THY41J - Jul 14, 14:45 UTCJul 15, 01:20 UTC10h 34m
2026-07-13 THY4JD - Jul 13, 23:20 UTCJul 14, 10:45 UTC11h 25m
2026-07-13 THY76Y - Jul 13, 02:30 UTCJul 13, 13:25 UTC10h 55m
2026-07-12 THY75D - Jul 12, 12:30 UTCJul 13, 00:05 UTC11h 35m
2026-07-11 THY181 - Jul 11, 19:35 UTCJul 12, 07:10 UTC11h 35m
2026-07-11 THY181 - Jul 11, 15:15 UTCJul 11, 17:10 UTC1h 55m
2026-07-10 THY181 - Jul 10, 23:20 UTCJul 11, 13:00 UTC13h 40m
2026-07-10 THY51 - Jul 10, 14:15 UTCJul 10, 14:40 UTC25m
2026-07-10 THY51 - Jul 10, 02:20 UTCJul 10, 13:40 UTC11h 20m
2026-07-09 THY50 - Jul 9, 14:00 UTCJul 10, 00:10 UTC10h 10m
2026-07-08 THY84U - Jul 8, 17:20 UTCJul 9, 02:50 UTC9h 30m
2026-07-08 THY67C - Jul 8, 04:00 UTCJul 8, 14:55 UTC10h 55m
2026-07-07 THY69 BKK → IST Jul 7, 16:20 UTCJul 8, 00:30 UTC8h 10m
2026-07-06 THY68 - Jul 6, 23:25 UTCJul 7, 08:05 UTC8h 40m
2026-07-06 THY125 - Jul 6, 13:35 UTCJul 6, 13:55 UTC20m
2026-07-06 THY125 - Jul 6, 02:20 UTCJul 6, 13:00 UTC10h 40m
2026-07-05 THY124 - Jul 5, 13:20 UTCJul 5, 23:45 UTC10h 25m
2026-07-05 THY91J - Jul 5, 01:15 UTCJul 5, 10:10 UTC8h 55m
2026-07-04 THY7KG IST → DTW Jul 4, 12:20 UTCJul 4, 22:50 UTC10h 30m
2026-07-03 THY184 IST → MEX Jul 3, 19:30 UTCJul 4, 06:40 UTC11h 10m
2026-07-03 THY184 IST → MEX Jul 3, 15:25 UTCJul 3, 17:10 UTC1h 45m
2026-07-02 THY184 IST → MEX Jul 2, 23:35 UTCJul 3, 12:45 UTC13h 10m

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

Mode-S 4BB181 frequently asked

What is Mode-S code 4BB181?
4BB181 is an ICAO 24-bit transponder address. Allocated to Turkey. Assigned to TC-LLA.
Where is Mode-S 4BB181 registered?
Mode-S code 4BB181 is allocated to Turkey (TR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4BB181 broadcasting right now?
No active broadcast right now. Last signal was 4h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4BB181, octal 22730601, decimal 4,960,641.
What flights does 4BB181 operate?
Mode-S 4BB181 has broadcast 20 distinct callsigns, including THY181, THY281, THY125, THY91J, THY7KG.