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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
Broadcasting now · callsign THY31K · 29,050 ft
Flights observed
214
Distinct callsigns
20
Country
TR
Last broadcast
8m ago

Current position

4BB1A3 is currently broadcasting. Map zoomed to live position.

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
THY196 - 10 2026-07-01
THY32G - 9 2026-07-08
THY171 Turkish Airlines 9 2026-05-22
THY311 Turkish Airlines 8 2026-04-25
THY197 - 8 2026-07-02
THY184 Turkish Airlines 8 2026-06-19
THY181 Turkish Airlines 8 2026-07-04
THY12E Turkish Airlines 8 2026-05-19
THY8MT Turkish Airlines 7 2026-05-19
THY310 Turkish Airlines 7 2026-04-25
THY170 Turkish Airlines 7 2026-05-21
THY31K - 6 2026-07-14
THY281 - 6 2026-07-13
THY91J Turkish Airlines 5 2026-05-31
THY89J - 5 2026-07-10
THY7KG Turkish Airlines 5 2026-05-30
THY87 Turkish Airlines 4 2026-06-25
THY8 Turkish Airlines 4 2026-06-09
THY7 Turkish Airlines 4 2026-06-08
THY51 - 4 2026-07-06

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 THY31K - Jul 14, 12:05 UTCJul 14, 22:45 UTC10h 39m
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
2026-07-06 THY51 - Jul 6, 02:15 UTCJul 6, 14:35 UTC12h 20m
2026-07-05 THY50 IST → NRT Jul 5, 13:30 UTCJul 5, 23:45 UTC10h 15m
2026-07-04 THY181 CUN → IST Jul 4, 19:35 UTCJul 5, 06:40 UTC11h 5m
2026-07-04 THY181 CUN → IST Jul 4, 15:25 UTCJul 4, 17:05 UTC1h 40m
2026-07-03 THY181 CUN → IST Jul 3, 23:30 UTCJul 4, 13:20 UTC13h 50m
2026-07-03 THY32G - Jul 3, 02:15 UTCJul 3, 12:10 UTC9h 55m
2026-07-02 THY31K IST → ATL Jul 2, 12:15 UTCJul 2, 23:50 UTC11h 35m
2026-07-02 THY197 - Jul 2, 08:45 UTCJul 2, 09:10 UTC25m
2026-07-02 THY197 - Jul 2, 06:45 UTCJul 2, 08:10 UTC1h 25m
2026-07-01 THY196 - Jul 1, 21:00 UTCJul 1, 21:15 UTC15m
2026-07-01 THY196 - Jul 1, 13:30 UTCJul 1, 15:15 UTC1h 45m
2026-07-01 THY281 - Jul 1, 10:50 UTCJul 1, 11:05 UTC15m
2026-07-01 THY281 - Jul 1, 01:45 UTCJul 1, 10:10 UTC8h 25m
2026-06-30 THY281 - Jun 30, 12:50 UTCJul 1, 10:10 UTC21h 20m
2026-06-30 THY281 - Jun 30, 12:30 UTCJul 1, 10:10 UTC21h 40m
2026-06-29 THY181 CUN → IST Jun 29, 19:49 UTCJun 30, 07:05 UTC11h 16m
2026-06-29 THY181 CUN → IST Jun 29, 15:54 UTCJun 29, 17:40 UTC1h 45m
2026-06-28 THY181 CUN → IST Jun 28, 23:44 UTCJun 29, 12:49 UTC13h 5m
2026-06-28 THY4YH - Jun 28, 19:04 UTCJun 28, 19:44 UTC40m
2026-06-28 THY80E - Jun 28, 16:45 UTCJun 28, 17:10 UTC25m
2026-06-28 THY125 - Jun 28, 12:55 UTCJun 28, 13:14 UTC20m
2026-06-28 THY125 - Jun 28, 02:05 UTCJun 28, 12:25 UTC10h 20m
2026-06-27 THY124 - Jun 27, 13:20 UTCJun 28, 00:00 UTC10h 40m
2026-06-27 THY197 - Jun 27, 09:44 UTCJun 27, 10:10 UTC25m
2026-06-27 THY197 - Jun 27, 07:45 UTCJun 27, 09:09 UTC1h 25m
2026-06-26 THY196 - Jun 26, 21:50 UTCJun 26, 22:14 UTC25m
2026-06-26 THY196 - Jun 26, 14:29 UTCJun 26, 16:20 UTC1h 50m
2026-06-26 THY32G - Jun 26, 02:14 UTCJun 26, 12:24 UTC10h 10m
2026-06-25 THY31K IST → ATL Jun 25, 11:59 UTCJun 25, 23:14 UTC11h 15m
2026-06-25 THY87 KIX → IST Jun 25, 00:59 UTCJun 25, 01:19 UTC20m
2026-06-24 THY87 KIX → IST Jun 24, 13:20 UTCJun 25, 00:19 UTC11h 0m
2026-06-23 THY86 - Jun 23, 23:44 UTCJun 24, 09:39 UTC9h 55m
2026-06-22 THY3CM - Jun 22, 22:30 UTCJun 23, 09:09 UTC10h 40m

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?
Yes. Mode-S 4BB1A3 is currently airborne.
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 THY196, THY32G, THY171, THY311, THY197.