Apparatus

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sensors Mode-S transponder

4BB1A3

ICAO 24-bit transponder address · allocated to Turkey

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

Hex
4BB1A3
Octal
22730643
Decimal
4,960,675
Country
TR
Tail
TC-LMC
Type
B789
No current signal · last broadcast Jul 26, 19:50 UTC
Flights observed
247
Distinct callsigns
20
Country
TR
Last broadcast
Jul 26, 19:50 UTC

Last known position

Most recent position reported by Mode-S 4BB1A3.

Country allocation

The ICAO 24-bit address 4BB1A3 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
THY171 Turkish Airlines 12 2026-07-26
THY181 - 11 2026-07-20
THY32G - 10 2026-07-15
THY196 - 10 2026-07-01
THY281 Turkish Airlines 9 2026-07-25
THY170 Turkish Airlines 9 2026-07-26
THY311 Turkish Airlines 8 2026-04-25
THY197 - 8 2026-07-02
THY184 Turkish Airlines 8 2026-06-19
THY12E Turkish Airlines 8 2026-05-19
THY8MT Turkish Airlines 7 2026-05-19
THY310 Turkish Airlines 7 2026-04-25
THY91J Turkish Airlines 6 2026-07-22
THY7KG - 6 2026-07-21
THY51 Turkish Airlines 6 2026-07-23
THY31K - 6 2026-07-14
THY299 - 6 2026-07-16
THY89J - 5 2026-07-10
THY9ZP Turkish Airlines 4 2026-07-26
THY87 Turkish Airlines 4 2026-06-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 THY9ZP ESB → IST Jul 26, 19:05 UTCJul 26, 19:50 UTC45m
2026-07-26 THY7UW IST → BSL Jul 26, 16:45 UTCJul 26, 17:10 UTC25m
2026-07-26 THY171 HKG → IST Jul 26, 13:20 UTCJul 26, 14:00 UTC40m
2026-07-26 THY171 HKG → IST Jul 26, 04:25 UTCJul 26, 12:45 UTC8h 21m
2026-07-26 THY171 HKG → IST Jul 26, 03:30 UTCJul 26, 03:40 UTC10m
2026-07-26 THY170 IST → HKG Jul 26, 01:10 UTCJul 26, 01:35 UTC25m
2026-07-25 THY170 IST → HKG Jul 25, 16:00 UTCJul 25, 23:30 UTC7h 30m
2026-07-25 THY281 PVG → IST Jul 25, 11:15 UTCJul 25, 11:45 UTC30m
2026-07-24 THY281 PVG → IST Jul 24, 14:50 UTCJul 25, 10:35 UTC19h 45m
2026-07-24 THY281 PVG → IST Jul 24, 13:00 UTCJul 25, 10:35 UTC21h 35m
2026-07-24 THY4AX CDG → IST Jul 24, 05:45 UTCJul 24, 08:40 UTC2h 55m
2026-07-23 THY8WM IST → ESB Jul 23, 17:15 UTCJul 23, 20:10 UTC2h 55m
2026-07-23 THY51 NRT → IST Jul 23, 14:20 UTCJul 23, 14:45 UTC25m
2026-07-23 THY51 NRT → IST Jul 23, 02:40 UTCJul 23, 13:45 UTC11h 5m
2026-07-22 THY50 IST → NRT Jul 22, 13:25 UTCJul 22, 23:55 UTC10h 30m
2026-07-22 THY91J DTW → IST Jul 22, 01:05 UTCJul 22, 11:35 UTC10h 30m
2026-07-21 THY7KG - Jul 21, 12:25 UTCJul 21, 22:50 UTC10h 25m
2026-07-20 THY181 - Jul 20, 19:15 UTCJul 21, 07:10 UTC11h 54m
2026-07-20 THY181 - Jul 20, 15:15 UTCJul 20, 17:00 UTC1h 45m
2026-07-19 THY181 - Jul 19, 23:25 UTCJul 20, 12:50 UTC13h 25m
2026-07-19 THY2JV - Jul 19, 19:15 UTCJul 19, 20:10 UTC55m
2026-07-19 THY9QA - Jul 19, 16:35 UTCJul 19, 17:25 UTC50m
2026-07-19 THY65 BKK → IST Jul 19, 04:40 UTCJul 19, 12:45 UTC8h 5m
2026-07-18 THY64 - Jul 18, 18:10 UTCJul 19, 02:45 UTC8h 35m
2026-07-18 THY12 JFK → IST Jul 18, 04:50 UTCJul 18, 13:50 UTC9h 0m
2026-07-17 THY11 - Jul 17, 16:44 UTCJul 18, 02:29 UTC9h 45m
2026-07-17 THY12 JFK → IST Jul 17, 04:35 UTCJul 17, 13:29 UTC8h 55m
2026-07-16 THY11 - Jul 16, 16:09 UTCJul 17, 01:59 UTC9h 50m
2026-07-16 THY299 - Jul 16, 12:30 UTCJul 16, 12:49 UTC20m
2026-07-16 THY299 - Jul 16, 05:00 UTCJul 16, 11:54 UTC6h 55m
2026-07-16 THY299 - Jul 16, 03:05 UTCJul 16, 03:20 UTC15m
2026-07-15 THY298 - Jul 15, 14:45 UTCJul 15, 22:10 UTC7h 25m
2026-07-15 THY32G - Jul 15, 02:10 UTCJul 15, 12:30 UTC10h 20m
2026-07-14 THY31K - Jul 14, 12:05 UTCJul 14, 23:30 UTC11h 24m
2026-07-14 THY59 - Jul 14, 08:45 UTCJul 14, 09:05 UTC20m
2026-07-13 THY59 - Jul 13, 23:55 UTCJul 14, 08:05 UTC8h 10m
2026-07-13 THY58 - Jul 13, 13:40 UTCJul 13, 22:10 UTC8h 30m
2026-07-13 THY281 - Jul 13, 01:40 UTCJul 13, 11:20 UTC9h 40m
2026-07-12 THY281 - Jul 12, 12:35 UTCJul 13, 10:20 UTC21h 45m
2026-07-11 THY59 - Jul 11, 23:55 UTCJul 12, 09:05 UTC9h 10m
2026-07-11 THY58 - Jul 11, 13:15 UTCJul 11, 21:35 UTC8h 20m
2026-07-10 THY3CM - Jul 10, 20:05 UTCJul 11, 07:10 UTC11h 5m
2026-07-10 THY89J - Jul 10, 05:45 UTCJul 10, 17:55 UTC12h 10m
2026-07-08 THY8AK - Jul 8, 18:05 UTCJul 8, 18:55 UTC50m
2026-07-08 THY5HS - Jul 8, 15:05 UTCJul 8, 15:55 UTC50m
2026-07-08 THY32G - Jul 8, 02:00 UTCJul 8, 12:10 UTC10h 10m
2026-07-07 THY31K IST → ATL Jul 7, 12:05 UTCJul 7, 23:15 UTC11h 10m
2026-07-07 THY32W - Jul 7, 07:05 UTCJul 7, 07:15 UTC10m
2026-07-07 THY32W - Jul 7, 01:15 UTCJul 7, 06:25 UTC5h 10m
2026-07-06 THY51Q IST → DEL Jul 6, 17:30 UTCJul 6, 22:30 UTC5h 0m

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

Mode-S 4BB1A3 frequently asked

What is Mode-S code 4BB1A3?
4BB1A3 is an ICAO 24-bit transponder address. Allocated to Turkey. Assigned to TC-LMC.
Where is Mode-S 4BB1A3 registered?
Mode-S code 4BB1A3 is allocated to Turkey (TR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4BB1A3 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 19:50 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4BB1A3, octal 22730643, decimal 4,960,675.
What flights does 4BB1A3 operate?
Mode-S 4BB1A3 has broadcast 20 distinct callsigns, including THY171, THY181, THY32G, THY196, THY281.