Apparatus

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sensors Mode-S transponder

4BB189

ICAO 24-bit transponder address · allocated to Turkey

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

Hex
4BB189
Octal
22730611
Decimal
4,960,649
Country
TR
Tail
TC-LLI
Type
B789
No current signal · last broadcast 1h ago
Flights observed
28
Distinct callsigns
7
Country
TR
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 4BB189.

Country allocation

The ICAO 24-bit address 4BB189 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 7 distinct

Callsign Airline Flights Last seen
THY181 Turkish Airlines 6 2026-04-18
THY224 Turkish Airlines 5 2026-04-17
THY223 Turkish Airlines 5 2026-04-17
THY51 Turkish Airlines 4 2026-04-15
THY50 Turkish Airlines 4 2026-04-14
THY59E Turkish Airlines 2 2026-04-15
THY47G Turkish Airlines 2 2026-04-16

Recent flights last 28

DateFlightRouteTakeoffLandingDuration
2026-04-18 THY181 CUN → IST Apr 18, 15:10 UTCApr 18, 17:05 UTC1h 55m
2026-04-18 THY181 CUN → IST Apr 18, 07:25 UTCApr 18, 09:20 UTC1h 55m
2026-04-18 THY181 CUN → IST Apr 18, 03:40 UTCApr 18, 04:05 UTC25m
2026-04-18 THY181 CUN → IST Apr 18, 01:25 UTCApr 18, 02:45 UTC1h 20m
2026-04-17 THY181 CUN → IST Apr 17, 23:25 UTCApr 18, 01:20 UTC1h 55m
2026-04-17 THY181 CUN → IST Apr 17, 23:10 UTCApr 18, 12:55 UTC13h 45m
2026-04-17 THY224 CCS → IST Apr 17, 15:20 UTCApr 17, 15:30 UTC10m
2026-04-17 THY224 CCS → IST Apr 17, 13:20 UTCApr 17, 15:15 UTC1h 54m
2026-04-17 THY224 CCS → IST Apr 17, 11:35 UTCApr 17, 13:15 UTC1h 40m
2026-04-17 THY224 CCS → IST Apr 17, 10:35 UTCApr 17, 10:55 UTC20m
2026-04-17 THY224 CCS → IST Apr 17, 05:30 UTCApr 17, 06:00 UTC30m
2026-04-17 THY223 IST → CCS Apr 17, 01:20 UTCApr 17, 01:40 UTC20m
2026-04-17 THY223 IST → CCS Apr 17, 00:40 UTCApr 17, 01:15 UTC35m
2026-04-16 THY223 IST → CCS Apr 16, 17:15 UTCApr 16, 17:50 UTC35m
2026-04-16 THY223 IST → CCS Apr 16, 15:15 UTCApr 16, 17:10 UTC1h 55m
2026-04-16 THY223 IST → CCS Apr 16, 13:50 UTCApr 16, 15:10 UTC1h 20m
2026-04-16 THY47G BOM → IST Apr 16, 07:09 UTCApr 16, 07:24 UTC15m
2026-04-16 THY47G BOM → IST Apr 16, 06:15 UTCApr 16, 07:05 UTC50m
2026-04-15 THY59E IST → BOM Apr 15, 19:05 UTCApr 15, 19:50 UTC45m
2026-04-15 THY59E IST → BOM Apr 15, 18:50 UTCApr 15, 19:00 UTC10m
2026-04-15 THY51 NRT → IST Apr 15, 13:01 UTCApr 15, 13:40 UTC40m
2026-04-15 THY51 NRT → IST Apr 15, 12:15 UTCApr 15, 12:55 UTC40m
2026-04-15 THY51 NRT → IST Apr 15, 03:00 UTCApr 15, 03:35 UTC35m
2026-04-15 THY51 NRT → IST Apr 15, 01:45 UTCApr 15, 02:40 UTC55m
2026-04-14 THY50 IST → NRT Apr 14, 22:55 UTCApr 14, 23:35 UTC40m
2026-04-14 THY50 IST → NRT Apr 14, 21:50 UTCApr 14, 22:50 UTC1h 0m
2026-04-14 THY50 IST → NRT Apr 14, 14:50 UTCApr 14, 15:00 UTC10m
2026-04-14 THY50 IST → NRT Apr 14, 14:05 UTCApr 14, 14:45 UTC40m

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

Mode-S 4BB189 frequently asked

What is Mode-S code 4BB189?
4BB189 is an ICAO 24-bit transponder address. Allocated to Turkey. Assigned to TC-LLI.
Where is Mode-S 4BB189 registered?
Mode-S code 4BB189 is allocated to Turkey (TR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4BB189 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 4BB189, octal 22730611, decimal 4,960,649.
What flights does 4BB189 operate?
Mode-S 4BB189 has broadcast 7 distinct callsigns, including THY181, THY224, THY223, THY51, THY50.