Apparatus

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sensors Mode-S transponder

4BB155

ICAO 24-bit transponder address · allocated to Turkey

Currently assigned to TC-LJU · BOEING 777-200LR

Hex
4BB155
Octal
22730525
Decimal
4,960,597
Country
TR
Tail
TC-LJU
Type
B77L
No current signal · last broadcast Jul 26, 21:10 UTC
Flights observed
321
Distinct callsigns
20
Country
TR
Last broadcast
Jul 26, 21:10 UTC

Last known position

Most recent position reported by Mode-S 4BB155.

Country allocation

The ICAO 24-bit address 4BB155 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
THY6355 - 11 2026-07-17
THY6039 - 11 2026-07-07
THY6354 Turkish Airlines 9 2026-07-16
THY6233 - 9 2026-06-30
THY6040 Turkish Airlines 8 2026-07-08
THY6597 Turkish Airlines 7 2026-07-19
THY6577 - 7 2026-06-26
THY6437 - 7 2026-07-06
THY6335 Turkish Airlines 7 2026-05-27
THY6265 Turkish Airlines 7 2026-06-18
THY6205 Turkish Airlines 7 2026-05-30
THY6024 - 7 2026-07-12
THY6263 - 6 2026-07-14
THY6059 Turkish Airlines 6 2026-07-26
THY6333 Turkish Airlines 5 2026-05-27
THY6262 - 5 2026-07-13
THY6260 Turkish Airlines 5 2026-06-17
THY6255 Turkish Airlines 5 2026-06-08
THY6251 - 5 2026-07-02
THY6235 Turkish Airlines 5 2026-05-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 THY6060 IST → ORD Jul 26, 19:55 UTCJul 26, 21:10 UTC1h 15m
2026-07-26 THY6059 IST → JFK Jul 26, 14:30 UTCJul 26, 16:30 UTC2h 0m
2026-07-26 THY6059 IST → JFK Jul 26, 01:10 UTCJul 26, 10:55 UTC9h 46m
2026-07-25 THY6227 HKG → IST Jul 25, 22:00 UTCJul 25, 22:25 UTC25m
2026-07-25 THY6227 HKG → IST Jul 25, 20:05 UTCJul 25, 21:25 UTC1h 20m
2026-07-25 THY6227 HKG → IST Jul 25, 12:10 UTCJul 25, 12:25 UTC15m
2026-07-25 THY6120 IST → MAA Jul 25, 09:25 UTCJul 25, 09:35 UTC10m
2026-07-24 THY6120 IST → MAA Jul 24, 18:45 UTCJul 25, 06:30 UTC11h 45m
2026-07-24 THY6212 - Jul 24, 01:30 UTCJul 24, 12:15 UTC10h 45m
2026-07-23 THY6212 - Jul 23, 09:05 UTCJul 23, 22:40 UTC13h 35m
2026-07-23 THY6147 IST → MIA Jul 23, 03:20 UTCJul 23, 05:20 UTC2h 0m
2026-07-22 THY6147 IST → MIA Jul 22, 23:35 UTCJul 23, 01:00 UTC1h 25m
2026-07-22 THY6147 IST → MIA Jul 22, 17:35 UTCJul 22, 20:40 UTC3h 5m
2026-07-22 THY6219 AMM → IST Jul 22, 10:20 UTCJul 22, 12:05 UTC1h 45m
2026-07-22 THY6219 AMM → IST Jul 22, 00:00 UTCJul 22, 02:50 UTC2h 50m
2026-07-21 THY6219 AMM → IST Jul 21, 23:05 UTCJul 21, 23:15 UTC10m
2026-07-21 THY6218 IST → DWC Jul 21, 19:30 UTCJul 21, 19:55 UTC25m
2026-07-21 THY6218 IST → DWC Jul 21, 12:15 UTCJul 21, 17:55 UTC5h 40m
2026-07-21 THY6218 IST → DWC Jul 21, 06:05 UTCJul 21, 10:20 UTC4h 15m
2026-07-20 THY6198 STN → STN Jul 20, 12:00 UTCJul 21, 02:35 UTC14h 34m
2026-07-19 THY6597 FRU → IST Jul 19, 16:35 UTCJul 20, 08:50 UTC16h 15m
2026-07-19 THY6597 FRU → IST Jul 19, 09:20 UTCJul 20, 08:50 UTC23h 30m
2026-07-19 THY6596 IST → FRU Jul 19, 07:30 UTCJul 20, 07:15 UTC23h 45m
2026-07-18 THY6020 YYZ → IST Jul 18, 19:20 UTCJul 19, 04:15 UTC8h 55m
2026-07-18 THY6019 IST → ATL Jul 18, 15:00 UTCJul 18, 16:45 UTC1h 45m
2026-07-17 THY6019 IST → ATL Jul 17, 22:49 UTCJul 18, 09:55 UTC11h 6m
2026-07-17 THY6355 MXP → IST Jul 17, 12:40 UTCJul 17, 14:50 UTC2h 10m
2026-07-17 THY6355 - Jul 17, 04:04 UTCJul 17, 04:29 UTC25m
2026-07-16 THY6354 LGW → IST Jul 16, 16:15 UTCJul 17, 00:55 UTC8h 40m
2026-07-16 THY6034 - Jul 16, 00:35 UTCJul 16, 11:54 UTC11h 20m
2026-07-15 THY6034 - Jul 15, 20:00 UTCJul 15, 21:35 UTC1h 35m
2026-07-15 THY6033 - Jul 15, 04:20 UTCJul 15, 15:20 UTC11h 0m
2026-07-14 THY6033 - Jul 14, 21:40 UTCJul 15, 00:35 UTC2h 54m
2026-07-14 THY6263 - Jul 14, 16:50 UTCJul 14, 17:10 UTC20m
2026-07-13 THY6263 - Jul 13, 22:25 UTCJul 14, 16:10 UTC17h 45m
2026-07-13 THY6263 - Jul 13, 19:20 UTCJul 14, 16:10 UTC20h 50m
2026-07-13 THY6262 - Jul 13, 18:10 UTCJul 14, 16:10 UTC22h 0m
2026-07-13 THY6262 - Jul 13, 16:10 UTCJul 14, 15:15 UTC23h 5m
2026-07-13 THY6262 - Jul 13, 11:55 UTCJul 13, 14:10 UTC2h 15m
2026-07-12 THY6024 - Jul 12, 22:50 UTCJul 13, 08:30 UTC9h 40m
2026-07-12 THY6024 - Jul 12, 20:45 UTCJul 12, 22:45 UTC2h 0m
2026-07-12 THY6023 - Jul 12, 16:10 UTCJul 12, 18:05 UTC1h 55m
2026-07-12 THY6023 - Jul 12, 01:30 UTCJul 12, 12:10 UTC10h 40m
2026-07-11 THY6435 - Jul 11, 18:15 UTCJul 11, 20:55 UTC2h 40m
2026-07-11 THY6434 - Jul 11, 12:40 UTCJul 11, 15:40 UTC3h 0m
2026-07-11 THY6510 - Jul 11, 07:15 UTCJul 11, 09:15 UTC2h 0m
2026-07-11 THY6509 - Jul 11, 01:55 UTCJul 11, 04:01 UTC2h 5m
2026-07-10 THY6321 - Jul 10, 18:05 UTCJul 10, 20:35 UTC2h 30m
2026-07-10 THY6321 - Jul 10, 10:15 UTCJul 10, 10:30 UTC15m
2026-07-10 THY6320 - Jul 10, 07:10 UTCJul 10, 07:40 UTC30m

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

Mode-S 4BB155 frequently asked

What is Mode-S code 4BB155?
4BB155 is an ICAO 24-bit transponder address. Allocated to Turkey. Assigned to TC-LJU.
Where is Mode-S 4BB155 registered?
Mode-S code 4BB155 is allocated to Turkey (TR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4BB155 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:10 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4BB155, octal 22730525, decimal 4,960,597.
What flights does 4BB155 operate?
Mode-S 4BB155 has broadcast 20 distinct callsigns, including THY6355, THY6039, THY6354, THY6233, THY6040.