Apparatus

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sensors Mode-S transponder

4BB199

ICAO 24-bit transponder address · allocated to Turkey

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

Hex
4BB199
Octal
22730631
Decimal
4,960,665
Country
TR
Tail
TC-LLY
Type
B789
No current signal · last broadcast 1h ago
Flights observed
243
Distinct callsigns
20
Country
TR
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 4BB199.

Country allocation

The ICAO 24-bit address 4BB199 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 10 2026-06-12
THY182 Turkish Airlines 10 2026-04-15
THY5YR Turkish Airlines 9 2026-05-12
THY51 - 9 2026-07-07
THY65 - 8 2026-07-12
THY281 - 8 2026-06-29
THY125 - 8 2026-07-10
THY64 - 7 2026-07-11
THY311 Turkish Airlines 7 2026-06-27
THY83J Turkish Airlines 6 2026-05-11
THY50 Turkish Airlines 6 2026-07-06
THY4JD - 6 2026-07-02
THY310 - 6 2026-06-27
THY196 - 6 2026-07-14
THY124 - 6 2026-07-09
THY299 - 5 2026-07-01
THY25 Turkish Airlines 5 2026-06-04
THY84U - 4 2026-06-20
THY67C Turkish Airlines 4 2026-06-20
THY298 - 4 2026-06-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 THY196 - Jul 14, 13:20 UTCJul 14, 14:15 UTC55m
2026-07-13 THY41Y - Jul 13, 20:05 UTCJul 14, 07:35 UTC11h 30m
2026-07-13 THY49Q - Jul 13, 05:25 UTCJul 13, 17:40 UTC12h 15m
2026-07-12 THY4RN - Jul 12, 22:10 UTCJul 13, 01:10 UTC3h 0m
2026-07-12 THY9PG - Jul 12, 16:25 UTCJul 12, 19:40 UTC3h 15m
2026-07-12 THY65 - Jul 12, 13:10 UTCJul 12, 13:30 UTC20m
2026-07-12 THY65 - Jul 12, 04:25 UTCJul 12, 12:30 UTC8h 5m
2026-07-11 THY64 - Jul 11, 19:35 UTCJul 12, 02:20 UTC6h 45m
2026-07-11 THY353 - Jul 11, 10:05 UTCJul 11, 10:25 UTC20m
2026-07-10 THY353 - Jul 10, 22:05 UTCJul 11, 09:30 UTC11h 25m
2026-07-10 THY125 - Jul 10, 12:45 UTCJul 10, 13:10 UTC25m
2026-07-10 THY125 - Jul 10, 02:00 UTCJul 10, 12:10 UTC10h 10m
2026-07-09 THY124 - Jul 9, 13:10 UTCJul 9, 23:45 UTC10h 35m
2026-07-08 THY353 - Jul 8, 21:55 UTCJul 9, 10:40 UTC12h 45m
2026-07-08 THY65 - Jul 8, 13:50 UTCJul 8, 14:10 UTC20m
2026-07-08 THY65 - Jul 8, 05:05 UTCJul 8, 13:10 UTC8h 5m
2026-07-07 THY64 IST → BKK Jul 7, 17:45 UTCJul 8, 02:10 UTC8h 25m
2026-07-07 THY51 - Jul 7, 13:40 UTCJul 7, 14:05 UTC25m
2026-07-07 THY51 - Jul 7, 01:40 UTCJul 7, 12:55 UTC11h 15m
2026-07-06 THY50 IST → NRT Jul 6, 13:15 UTCJul 6, 23:35 UTC10h 20m
2026-07-06 THY91J - Jul 6, 01:20 UTCJul 6, 10:30 UTC9h 10m
2026-07-05 THY7KG IST → DTW Jul 5, 12:25 UTCJul 5, 23:00 UTC10h 35m
2026-07-05 THY197 - Jul 5, 08:40 UTCJul 5, 09:05 UTC25m
2026-07-05 THY197 - Jul 5, 06:45 UTCJul 5, 08:00 UTC1h 15m
2026-07-04 THY196 - Jul 4, 21:00 UTCJul 4, 21:15 UTC15m
2026-07-04 THY196 - Jul 4, 13:35 UTCJul 4, 15:20 UTC1h 45m
2026-07-04 THY3YB - Jul 4, 09:15 UTCJul 4, 11:20 UTC2h 5m
2026-07-04 THY4XL - Jul 4, 04:45 UTCJul 4, 07:00 UTC2h 15m
2026-07-03 THY41J MIA → IST Jul 3, 15:00 UTCJul 4, 01:50 UTC10h 50m
2026-07-02 THY4JD - Jul 2, 23:20 UTCJul 3, 10:25 UTC11h 5m
2026-07-02 THY4ML - Jul 2, 11:50 UTCJul 2, 20:30 UTC8h 40m
2026-07-01 THY4KG - Jul 1, 22:30 UTCJul 2, 08:30 UTC10h 0m
2026-07-01 THY7ER - Jul 1, 18:20 UTCJul 1, 19:05 UTC45m
2026-07-01 THY1FC - Jul 1, 15:50 UTCJul 1, 16:40 UTC50m
2026-07-01 THY299 - Jul 1, 01:40 UTCJul 1, 12:00 UTC10h 20m
2026-06-30 THY298 - Jun 30, 13:10 UTCJun 30, 21:25 UTC8h 15m
2026-06-30 THY8XS - Jun 30, 08:40 UTCJun 30, 09:40 UTC1h 0m
2026-06-30 THY8HX - Jun 30, 05:55 UTCJun 30, 06:45 UTC50m
2026-06-30 THY323 - Jun 30, 01:55 UTCJun 30, 02:15 UTC20m
2026-06-29 THY322 - Jun 29, 17:45 UTCJun 30, 01:09 UTC7h 25m
2026-06-29 THY281 - Jun 29, 01:50 UTCJun 29, 11:25 UTC9h 35m
2026-06-28 THY281 - Jun 28, 12:35 UTCJun 29, 11:25 UTC22h 50m
2026-06-28 THY4HE - Jun 28, 09:25 UTCJun 28, 10:24 UTC1h 0m
2026-06-28 THY7SJ - Jun 28, 06:30 UTCJun 28, 07:09 UTC40m
2026-06-27 THY311 DPS → IST Jun 27, 09:00 UTCJun 28, 02:34 UTC17h 35m
2026-06-27 THY311 DPS → IST Jun 27, 06:19 UTCJun 28, 02:34 UTC20h 15m
2026-06-27 THY310 - Jun 27, 04:19 UTCJun 28, 02:34 UTC22h 15m
2026-06-27 THY310 - Jun 27, 03:44 UTCJun 28, 02:14 UTC22h 30m
2026-06-27 THY310 - Jun 27, 00:50 UTCJun 27, 22:45 UTC21h 55m
2026-06-26 THY310 - Jun 26, 23:30 UTCJun 27, 22:15 UTC22h 45m

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

Mode-S 4BB199 frequently asked

What is Mode-S code 4BB199?
4BB199 is an ICAO 24-bit transponder address. Allocated to Turkey. Assigned to TC-LLY.
Where is Mode-S 4BB199 registered?
Mode-S code 4BB199 is allocated to Turkey (TR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4BB199 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 4BB199, octal 22730631, decimal 4,960,665.
What flights does 4BB199 operate?
Mode-S 4BB199 has broadcast 20 distinct callsigns, including THY184, THY182, THY5YR, THY51, THY65.