Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

4BB1A4

ICAO 24-bit transponder address · allocated to Turkey

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

Hex
4BB1A4
Octal
22730644
Decimal
4,960,676
Country
TR
Tail
TC-LMD
Type
B789
No current signal · last broadcast 4h ago
Flights observed
240
Distinct callsigns
20
Country
TR
Last broadcast
4h ago

Last known position

Most recent position reported by Mode-S 4BB1A4.

Country allocation

The ICAO 24-bit address 4BB1A4 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
THY51 - 10 2026-07-11
THY311 Turkish Airlines 10 2026-06-09
THY41Y Turkish Airlines 8 2026-06-01
THY299 - 8 2026-07-06
THY196 Turkish Airlines 8 2026-06-09
THY50 - 7 2026-07-10
THY4JD - 7 2026-07-11
THY49Q Turkish Airlines 7 2026-06-01
THY197 Turkish Airlines 7 2026-06-10
THY91J - 6 2026-06-28
THY7KG Turkish Airlines 6 2026-06-27
THY73 Turkish Airlines 6 2026-05-30
THY41J - 6 2026-07-12
THY11 Turkish Airlines 6 2026-05-15
THY9LC - 5 2026-07-04
THY181 Turkish Airlines 5 2026-06-13
THY171 - 5 2026-07-03
THY165 Turkish Airlines 5 2026-04-21
THY12 Turkish Airlines 5 2026-05-16
THY83J Turkish Airlines 4 2026-04-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 THY3CM - Jul 13, 20:05 UTCJul 14, 07:25 UTC11h 20m
2026-07-13 THY89J - Jul 13, 05:31 UTCJul 13, 17:10 UTC11h 40m
2026-07-12 THY41J - Jul 12, 15:01 UTCJul 13, 01:30 UTC10h 30m
2026-07-11 THY4JD - Jul 11, 23:15 UTCJul 12, 10:55 UTC11h 40m
2026-07-11 THY51 - Jul 11, 01:55 UTCJul 11, 13:00 UTC11h 5m
2026-07-10 THY50 - Jul 10, 13:15 UTCJul 10, 23:30 UTC10h 15m
2026-07-09 THY12E - Jul 9, 21:00 UTCJul 10, 09:10 UTC12h 10m
2026-07-09 THY8MT - Jul 9, 05:50 UTCJul 9, 18:50 UTC13h 0m
2026-07-09 THY25 - Jul 9, 00:25 UTCJul 9, 00:40 UTC15m
2026-07-08 THY25 - Jul 8, 13:50 UTCJul 8, 23:50 UTC10h 0m
2026-07-07 THY24 IST → TPE Jul 7, 22:50 UTCJul 8, 09:10 UTC10h 20m
2026-07-07 THY209 - Jul 7, 13:05 UTCJul 7, 13:30 UTC25m
2026-07-07 THY209 - Jul 7, 02:50 UTCJul 7, 12:35 UTC9h 45m
2026-07-06 THY208 IST → SIN Jul 6, 14:35 UTCJul 7, 00:35 UTC10h 0m
2026-07-06 THY299 - Jul 6, 11:35 UTCJul 6, 12:00 UTC25m
2026-07-06 THY299 - Jul 6, 04:05 UTCJul 6, 11:00 UTC6h 55m
2026-07-06 THY299 - Jul 6, 01:40 UTCJul 6, 01:50 UTC10m
2026-07-05 THY298 - Jul 5, 13:10 UTCJul 5, 20:50 UTC7h 40m
2026-07-05 THY1KD - Jul 5, 09:15 UTCJul 5, 10:55 UTC1h 40m
2026-07-05 THY7KF - Jul 5, 05:25 UTCJul 5, 07:10 UTC1h 45m
2026-07-04 THY9LC - Jul 4, 17:50 UTCJul 5, 02:35 UTC8h 45m
2026-07-04 THY69W IST → IAD Jul 4, 05:10 UTCJul 4, 15:45 UTC10h 35m
2026-07-03 THY2JV - Jul 3, 19:00 UTCJul 3, 19:55 UTC55m
2026-07-03 THY9QA BLQ → IST Jul 3, 16:20 UTCJul 3, 17:10 UTC50m
2026-07-03 THY171 - Jul 3, 02:20 UTCJul 3, 13:05 UTC10h 45m
2026-07-02 THY170 IST → HKG Jul 2, 22:25 UTCJul 2, 22:50 UTC25m
2026-07-02 THY170 IST → HKG Jul 2, 13:20 UTCJul 2, 21:45 UTC8h 25m
2026-07-02 THY4AX - Jul 2, 05:50 UTCJul 2, 08:45 UTC2h 55m
2026-07-01 THY8WM - Jul 1, 17:20 UTCJul 1, 20:10 UTC2h 50m
2026-07-01 THY9QD - Jul 1, 06:00 UTCJul 1, 09:15 UTC3h 15m
2026-06-30 THY70G - Jun 30, 17:50 UTCJun 30, 20:55 UTC3h 5m
2026-06-30 THY8NK - Jun 30, 09:25 UTCJun 30, 11:50 UTC2h 25m
2026-06-30 THY7JV - Jun 30, 04:40 UTCJun 30, 07:05 UTC2h 25m
2026-06-29 THY299 - Jun 29, 11:29 UTCJun 29, 11:50 UTC20m
2026-06-28 THY299 - Jun 28, 15:05 UTCJun 29, 10:50 UTC19h 45m
2026-06-28 THY299 - Jun 28, 13:14 UTCJun 29, 10:50 UTC21h 35m
2026-06-28 THY91J - Jun 28, 00:55 UTCJun 28, 10:30 UTC9h 35m
2026-06-27 THY7KG IST → DTW Jun 27, 12:29 UTCJun 27, 22:25 UTC9h 55m
2026-06-27 THY369 - Jun 27, 09:00 UTCJun 27, 09:29 UTC30m
2026-06-26 THY368 - Jun 26, 22:49 UTCJun 27, 08:25 UTC9h 35m
2026-06-26 THY7XV - Jun 26, 18:15 UTCJun 26, 19:14 UTC1h 0m
2026-06-26 THY9HW - Jun 26, 15:49 UTCJun 26, 16:39 UTC50m
2026-06-26 THY2AY - Jun 26, 02:20 UTCJun 26, 13:45 UTC11h 25m
2026-06-25 THY5KM IST → IAH Jun 25, 11:44 UTCJun 25, 23:55 UTC12h 10m
2026-06-24 THY84U - Jun 24, 17:14 UTCJun 25, 03:04 UTC9h 50m
2026-06-24 THY67C IST → ORD Jun 24, 03:50 UTCJun 24, 14:24 UTC10h 35m
2026-06-23 THY163 SGN → IST Jun 23, 07:05 UTCJun 24, 01:24 UTC18h 20m
2026-06-23 THY163 SGN → IST Jun 23, 03:15 UTCJun 24, 00:59 UTC21h 45m
2026-06-22 THY162 - Jun 22, 23:05 UTCJun 23, 20:15 UTC21h 10m
2026-06-22 THY125 - Jun 22, 02:30 UTCJun 22, 14:05 UTC11h 35m

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

Mode-S 4BB1A4 frequently asked

What is Mode-S code 4BB1A4?
4BB1A4 is an ICAO 24-bit transponder address. Allocated to Turkey. Assigned to TC-LMD.
Where is Mode-S 4BB1A4 registered?
Mode-S code 4BB1A4 is allocated to Turkey (TR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4BB1A4 broadcasting right now?
No active broadcast right now. Last signal was 4h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4BB1A4, octal 22730644, decimal 4,960,676.
What flights does 4BB1A4 operate?
Mode-S 4BB1A4 has broadcast 20 distinct callsigns, including THY51, THY311, THY41Y, THY299, THY196.