Apparatus

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sensors Mode-S transponder

4BB1A2

ICAO 24-bit transponder address · allocated to Turkey

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

Hex
4BB1A2
Octal
22730642
Decimal
4,960,674
Country
TR
Tail
TC-LMB
Type
B789
No current signal · last broadcast 1h ago
Flights observed
202
Distinct callsigns
20
Country
TR
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 4BB1A2.

Country allocation

The ICAO 24-bit address 4BB1A2 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
THY184 Turkish Airlines 16 2026-06-26
THY189 Turkish Airlines 12 2026-05-11
THY125 - 10 2026-06-24
THY31K Turkish Airlines 9 2026-06-27
THY87 Turkish Airlines 8 2026-06-30
THY32G - 8 2026-06-28
THY181 - 8 2026-07-09
THY171 - 6 2026-07-14
THY86 - 5 2026-06-29
THY224 Turkish Airlines 5 2026-06-09
THY170 - 5 2026-07-13
THY124 - 5 2026-06-23
THY5KM - 4 2026-07-10
THY299 Turkish Airlines 4 2026-06-04
THY196 - 4 2026-06-11
THY88 Turkish Airlines 3 2026-05-26
THY73 Turkish Airlines 3 2026-05-20
THY2AY - 3 2026-07-11
THY281 - 3 2026-07-04
THY25 Turkish Airlines 3 2026-07-07

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 THY9PG - Jul 14, 16:45 UTCJul 14, 20:05 UTC3h 20m
2026-07-14 THY171 - Jul 14, 04:10 UTCJul 14, 12:20 UTC8h 10m
2026-07-14 THY171 - Jul 14, 02:00 UTCJul 14, 02:15 UTC15m
2026-07-13 THY170 - Jul 13, 13:45 UTCJul 13, 23:20 UTC9h 35m
2026-07-13 THY171 - Jul 13, 03:25 UTCJul 13, 11:40 UTC8h 15m
2026-07-13 THY171 - Jul 13, 01:20 UTCJul 13, 01:30 UTC10m
2026-07-12 THY170 - Jul 12, 22:30 UTCJul 12, 22:50 UTC20m
2026-07-12 THY170 - Jul 12, 13:20 UTCJul 12, 20:50 UTC7h 30m
2026-07-12 THY2RC - Jul 12, 07:40 UTCJul 12, 08:40 UTC1h 0m
2026-07-12 THY5JA - Jul 12, 04:35 UTCJul 12, 05:20 UTC45m
2026-07-11 THY2AY - Jul 11, 02:45 UTCJul 11, 13:45 UTC11h 0m
2026-07-10 THY5KM - Jul 10, 11:45 UTCJul 11, 00:20 UTC12h 36m
2026-07-09 THY181 - Jul 9, 19:20 UTCJul 10, 06:45 UTC11h 25m
2026-07-09 THY181 - Jul 9, 15:20 UTCJul 9, 17:05 UTC1h 45m
2026-07-08 THY181 - Jul 8, 23:10 UTCJul 9, 13:00 UTC13h 50m
2026-07-08 THY2AY - Jul 8, 02:55 UTCJul 8, 14:10 UTC11h 15m
2026-07-07 THY5KM IST → IAH Jul 7, 19:55 UTCJul 8, 00:00 UTC4h 5m
2026-07-07 THY5KM IST → IAH Jul 7, 11:40 UTCJul 7, 19:50 UTC8h 10m
2026-07-07 THY2RC - Jul 7, 06:45 UTCJul 7, 07:35 UTC50m
2026-07-07 THY5JA - Jul 7, 04:25 UTCJul 7, 05:05 UTC40m
2026-07-07 THY25 TPE → IST Jul 7, 01:00 UTCJul 7, 01:15 UTC15m
2026-07-06 THY25 TPE → IST Jul 6, 13:50 UTCJul 7, 00:15 UTC10h 25m
2026-07-05 THY24 IST → TPE Jul 5, 23:05 UTCJul 6, 09:35 UTC10h 30m
2026-07-05 THY51 - Jul 5, 14:05 UTCJul 5, 14:30 UTC25m
2026-07-05 THY51 - Jul 5, 02:15 UTCJul 5, 13:25 UTC11h 10m
2026-07-04 THY50 IST → NRT Jul 4, 13:45 UTCJul 5, 00:15 UTC10h 30m
2026-07-04 THY281 - Jul 4, 10:45 UTCJul 4, 11:20 UTC35m
2026-07-04 THY281 - Jul 4, 01:45 UTCJul 4, 10:10 UTC8h 25m
2026-07-03 THY281 - Jul 3, 12:40 UTCJul 4, 10:10 UTC21h 30m
2026-07-03 THY89A - Jul 3, 01:50 UTCJul 3, 09:20 UTC7h 30m
2026-07-02 THY51U - Jul 2, 16:10 UTCJul 2, 22:40 UTC6h 30m
2026-07-02 THY171 - Jul 2, 11:45 UTCJul 2, 11:55 UTC10m
2026-07-02 THY171 - Jul 2, 01:35 UTCJul 2, 11:05 UTC9h 30m
2026-07-01 THY170 IST → HKG Jul 1, 23:00 UTCJul 1, 23:20 UTC20m
2026-07-01 THY170 IST → HKG Jul 1, 13:55 UTCJul 1, 21:30 UTC7h 35m
2026-07-01 THY2JT - Jul 1, 09:20 UTCJul 1, 11:15 UTC1h 55m
2026-07-01 THY6AG - Jul 1, 05:15 UTCJul 1, 07:10 UTC1h 55m
2026-06-30 THY9LC - Jun 30, 17:30 UTCJul 1, 03:05 UTC9h 35m
2026-06-30 THY69W IST → IAD Jun 30, 04:55 UTCJun 30, 14:35 UTC9h 40m
2026-06-30 THY87 KIX → IST Jun 30, 00:55 UTCJun 30, 01:14 UTC20m
2026-06-29 THY87 KIX → IST Jun 29, 13:24 UTCJun 29, 15:54 UTC2h 30m
2026-06-29 THY86 - Jun 29, 00:00 UTCJun 29, 09:44 UTC9h 45m
2026-06-28 THY32G - Jun 28, 02:10 UTCJun 28, 12:15 UTC10h 5m
2026-06-27 THY31K IST → ATL Jun 27, 12:19 UTCJun 27, 23:14 UTC10h 55m
2026-06-26 THY184 IST → MEX Jun 26, 19:09 UTCJun 27, 06:25 UTC11h 15m
2026-06-26 THY184 IST → MEX Jun 26, 15:15 UTCJun 26, 17:00 UTC1h 45m
2026-06-25 THY184 IST → MEX Jun 25, 23:30 UTCJun 26, 12:59 UTC13h 30m
2026-06-25 THY4ML - Jun 25, 12:10 UTCJun 25, 20:49 UTC8h 40m
2026-06-24 THY4KG - Jun 24, 22:49 UTCJun 25, 08:40 UTC9h 50m
2026-06-24 THY125 - Jun 24, 13:05 UTCJun 24, 13:54 UTC50m

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

Mode-S 4BB1A2 frequently asked

What is Mode-S code 4BB1A2?
4BB1A2 is an ICAO 24-bit transponder address. Allocated to Turkey. Assigned to TC-LMB.
Where is Mode-S 4BB1A2 registered?
Mode-S code 4BB1A2 is allocated to Turkey (TR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4BB1A2 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 4BB1A2, octal 22730642, decimal 4,960,674.
What flights does 4BB1A2 operate?
Mode-S 4BB1A2 has broadcast 20 distinct callsigns, including THY184, THY189, THY125, THY31K, THY87.