Apparatus

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sensors Mode-S transponder

4BB1A5

ICAO 24-bit transponder address · allocated to Turkey

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

Hex
4BB1A5
Octal
22730645
Decimal
4,960,677
Country
TR
Tail
TC-LME
Type
B789
No current signal · last broadcast Jul 26, 21:15 UTC
Flights observed
244
Distinct callsigns
20
Country
TR
Last broadcast
Jul 26, 21:15 UTC

Last known position

Most recent position reported by Mode-S 4BB1A5.

Country allocation

The ICAO 24-bit address 4BB1A5 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
THY281 Turkish Airlines 14 2026-07-20
THY224 - 12 2026-06-18
THY7 Turkish Airlines 8 2026-06-23
THY8 - 7 2026-06-24
THY7KG Turkish Airlines 7 2026-07-07
THY4JD Turkish Airlines 7 2026-07-21
THY41J Turkish Airlines 7 2026-07-22
THY311 Turkish Airlines 7 2026-07-05
THY301 - 7 2026-07-15
THY11 Turkish Airlines 7 2026-05-19
THY91J - 6 2026-07-08
THY184 Turkish Airlines 6 2026-07-26
THY171 Turkish Airlines 6 2026-07-21
THY12 Turkish Airlines 6 2026-05-20
THY8MT Turkish Airlines 5 2026-06-28
THY3MA Turkish Airlines 5 2026-05-05
THY300 - 5 2026-07-13
THY299 Turkish Airlines 5 2026-04-25
THY197 - 5 2026-07-09
THY12E - 5 2026-06-28

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 THY184 IST → MEX Jul 26, 19:15 UTCJul 26, 21:15 UTC2h 0m
2026-07-26 THY184 IST → MEX Jul 26, 15:25 UTCJul 26, 17:10 UTC1h 45m
2026-07-25 THY184 IST → MEX Jul 25, 23:25 UTCJul 26, 13:20 UTC13h 56m
2026-07-25 THY519 SIN → IST Jul 25, 15:35 UTCJul 25, 15:55 UTC20m
2026-07-25 THY519 SIN → IST Jul 25, 05:25 UTCJul 25, 14:55 UTC9h 30m
2026-07-24 THY518 IST → SIN Jul 24, 16:40 UTCJul 25, 02:40 UTC10h 0m
2026-07-24 THY2AY IAH → IST Jul 24, 02:45 UTCJul 24, 13:45 UTC11h 0m
2026-07-23 THY5KM IST → IAH Jul 23, 11:45 UTCJul 24, 00:35 UTC12h 50m
2026-07-23 THY2RC AYT → MAN Jul 23, 07:15 UTCJul 23, 08:10 UTC55m
2026-07-23 THY5JA VCE → IST Jul 23, 04:50 UTCJul 23, 05:40 UTC50m
2026-07-22 THY41J MIA → IST Jul 22, 14:45 UTCJul 23, 01:20 UTC10h 35m
2026-07-21 THY4JD IST → MIA Jul 21, 23:30 UTCJul 22, 03:30 UTC4h 0m
2026-07-21 THY171 HKG → IST Jul 21, 12:10 UTCJul 21, 12:35 UTC25m
2026-07-21 THY171 HKG → IST Jul 21, 04:00 UTCJul 21, 11:35 UTC7h 35m
2026-07-21 THY171 HKG → IST Jul 21, 01:45 UTCJul 21, 02:00 UTC15m
2026-07-20 THY170 - Jul 20, 23:15 UTCJul 20, 23:40 UTC25m
2026-07-20 THY170 - Jul 20, 14:10 UTCJul 20, 21:30 UTC7h 20m
2026-07-20 THY281 PVG → IST Jul 20, 11:15 UTCJul 20, 11:40 UTC25m
2026-07-20 THY281 PVG → IST Jul 20, 01:45 UTCJul 20, 10:40 UTC8h 55m
2026-07-19 THY281 PVG → IST Jul 19, 14:15 UTCJul 20, 10:40 UTC20h 25m
2026-07-19 THY281 PVG → IST Jul 19, 12:30 UTCJul 20, 10:40 UTC22h 10m
2026-07-19 THY59 BKK → IST Jul 19, 08:40 UTCJul 19, 09:00 UTC20m
2026-07-19 THY59 BKK → IST Jul 19, 00:00 UTCJul 19, 08:00 UTC8h 0m
2026-07-18 THY58 - Jul 18, 13:15 UTCJul 18, 21:55 UTC8h 40m
2026-07-17 THY184 IST → MEX Jul 17, 19:20 UTCJul 18, 06:55 UTC11h 36m
2026-07-17 THY184 IST → MEX Jul 17, 15:25 UTCJul 17, 17:09 UTC1h 45m
2026-07-16 THY184 IST → MEX Jul 16, 23:25 UTCJul 17, 12:50 UTC13h 25m
2026-07-16 THY171 - Jul 16, 12:30 UTCJul 16, 12:55 UTC25m
2026-07-16 THY171 - Jul 16, 04:50 UTCJul 16, 11:54 UTC7h 5m
2026-07-16 THY171 - Jul 16, 02:45 UTCJul 16, 02:55 UTC10m
2026-07-15 THY170 - Jul 15, 23:35 UTCJul 16, 00:05 UTC30m
2026-07-15 THY170 - Jul 15, 14:05 UTCJul 15, 21:10 UTC7h 5m
2026-07-15 THY3YB - Jul 15, 09:10 UTCJul 15, 11:10 UTC2h 0m
2026-07-15 THY4XL - Jul 15, 04:50 UTCJul 15, 06:55 UTC2h 5m
2026-07-15 THY301 - Jul 15, 00:25 UTCJul 15, 00:50 UTC25m
2026-07-14 THY301 - Jul 14, 12:35 UTCJul 14, 23:55 UTC11h 19m
2026-07-13 THY300 - Jul 13, 23:45 UTCJul 14, 10:10 UTC10h 25m
2026-07-13 THY59 - Jul 13, 08:40 UTCJul 13, 09:00 UTC20m
2026-07-12 THY59 - Jul 12, 23:55 UTCJul 13, 08:01 UTC8h 5m
2026-07-12 THY58 - Jul 12, 13:15 UTCJul 12, 21:35 UTC8h 20m
2026-07-12 THY301 - Jul 12, 00:15 UTCJul 12, 00:35 UTC20m
2026-07-11 THY301 - Jul 11, 12:30 UTCJul 11, 23:30 UTC11h 0m
2026-07-10 THY300 - Jul 10, 23:30 UTCJul 11, 10:00 UTC10h 30m
2026-07-10 THY9ZP - Jul 10, 19:10 UTCJul 10, 19:45 UTC35m
2026-07-10 THY7UW - Jul 10, 16:40 UTCJul 10, 17:00 UTC20m
2026-07-10 THY281 - Jul 10, 11:50 UTCJul 10, 12:10 UTC20m
2026-07-09 THY281 - Jul 9, 17:15 UTCJul 10, 11:15 UTC18h 0m
2026-07-09 THY281 - Jul 9, 13:25 UTCJul 10, 11:15 UTC21h 50m
2026-07-09 THY281 - Jul 9, 12:40 UTCJul 10, 11:15 UTC22h 35m
2026-07-09 THY197 - Jul 9, 08:50 UTCJul 9, 09:25 UTC35m

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

Mode-S 4BB1A5 frequently asked

What is Mode-S code 4BB1A5?
4BB1A5 is an ICAO 24-bit transponder address. Allocated to Turkey. Assigned to TC-LME.
Where is Mode-S 4BB1A5 registered?
Mode-S code 4BB1A5 is allocated to Turkey (TR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4BB1A5 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:15 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4BB1A5, octal 22730645, decimal 4,960,677.
What flights does 4BB1A5 operate?
Mode-S 4BB1A5 has broadcast 20 distinct callsigns, including THY281, THY224, THY7, THY8, THY7KG.