sensors Mode-S transponder

4BBB21

ICAO 24-bit transponder address · allocated to Turkey

Currently assigned to TC-NYA · AIRBUS A-330-300

Hex
4BBB21
Octal
22735441
Decimal
4,963,105
Country
TR
Tail
TC-NYA
Type
A333
No current signal · last broadcast 18h ago
Flights observed
53
Distinct callsigns
20
Country
TR
Last broadcast
18h ago

Last known position

Most recent position reported by Mode-S 4BBB21.

Country allocation

The ICAO 24-bit address 4BBB21 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
FAD7301 - 3 2026-06-01
FAD6342 - 3 2026-05-03
FAD6762 - 2 2026-05-18
FAD6345 Rog-Air 2 2026-05-05
FAD6315 Rog-Air 2 2026-04-23
FAD6314 - 2 2026-04-23
FAD6308 - 2 2026-04-20
FAD6303 Rog-Air 2 2026-04-19
FAD6020 - 2 2026-05-15
FAD8508 - 1 2026-04-18
FAD8002 Rog-Air 1 2026-05-29
FAD8001 - 1 2026-05-22
FAD7466 Rog-Air 1 2026-05-30
FAD7411 - 1 2026-06-01
FAD7410 Rog-Air 1 2026-05-31
FAD6763 - 1 2026-05-19
FAD6700 - 1 2026-05-09
FAD6451 Rog-Air 1 2026-05-01
FAD6444 - 1 2026-04-30
FAD6439 - 1 2026-04-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-01 FAD7301 - Jun 1, 22:20 UTCJun 2, 17:40 UTC19h 20m
2026-06-01 FAD7301 - Jun 1, 21:30 UTCJun 2, 17:40 UTC20h 10m
2026-06-01 FAD7301 - Jun 1, 18:20 UTCJun 2, 17:40 UTC23h 20m
2026-06-01 FAD7411 - Jun 1, 17:10 UTCJun 2, 15:45 UTC22h 35m
2026-05-31 FAD7410 JED → ESB May 31, 18:35 UTCJun 1, 18:15 UTC23h 40m
2026-05-30 FAD7466 JED → MCT May 30, 21:05 UTCMay 31, 18:40 UTC21h 35m
2026-05-29 FAD8002 JED → JED May 29, 10:25 UTCMay 29, 11:30 UTC1h 5m
2026-05-22 FAD8001 - May 22, 02:45 UTCMay 22, 16:15 UTC13h 30m
2026-05-19 FAD6763 - May 19, 04:35 UTCMay 19, 04:55 UTC20m
2026-05-18 FAD6762 - May 18, 08:25 UTCMay 19, 02:15 UTC17h 49m
2026-05-18 FAD6762 - May 18, 05:50 UTCMay 19, 02:15 UTC20h 24m
2026-05-17 FAD6244 - May 17, 14:20 UTCMay 18, 08:25 UTC18h 5m
2026-05-17 FAD5735 - May 17, 05:10 UTCMay 17, 21:05 UTC15h 55m
2026-05-17 FAD5734 - May 17, 02:15 UTCMay 17, 02:40 UTC25m
2026-05-15 FAD6020 - May 15, 03:00 UTCMay 15, 15:35 UTC12h 34m
2026-05-14 FAD6020 - May 14, 11:40 UTCMay 15, 05:35 UTC17h 55m
2026-05-14 FAD5732 - May 14, 08:35 UTCMay 14, 08:55 UTC20m
2026-05-10 FAD6362 - May 10, 16:10 UTCMay 11, 04:35 UTC12h 25m
2026-05-10 FAD5736 - May 10, 12:05 UTCMay 10, 12:30 UTC25m
2026-05-09 FAD6700 AMM → AMM May 9, 06:15 UTCMay 9, 12:55 UTC6h 40m
2026-05-05 FAD6345 CCU → MED May 5, 06:40 UTCMay 5, 07:40 UTC1h 0m
2026-05-05 FAD6345 CCU → MED May 5, 02:35 UTCMay 5, 03:20 UTC45m
2026-05-04 FAD6343 CCU → MED May 4, 06:25 UTCMay 4, 23:35 UTC17h 11m
2026-05-03 FAD6342 - May 3, 21:35 UTCMay 4, 02:10 UTC4h 35m
2026-05-03 FAD6342 - May 3, 04:50 UTCMay 4, 02:10 UTC21h 20m
2026-05-03 FAD6342 - May 3, 02:50 UTCMay 4, 02:10 UTC23h 19m
2026-05-02 FAD6119 - May 2, 17:15 UTCMay 3, 05:55 UTC12h 39m
2026-05-01 FAD6451 ESB → MED May 1, 18:20 UTCMay 2, 18:10 UTC23h 50m
2026-05-01 FAD6335 CCU → MED May 1, 02:00 UTCMay 1, 19:15 UTC17h 15m
2026-04-30 FAD6334 - Apr 30, 10:45 UTCApr 30, 21:40 UTC10h 55m
2026-04-30 FAD6444 - Apr 30, 05:50 UTCApr 30, 06:55 UTC1h 5m
2026-04-28 FAD6329 - Apr 28, 21:05 UTCApr 29, 02:05 UTC5h 0m
2026-04-28 FAD6328 CCU → CCU Apr 28, 03:35 UTCApr 28, 17:55 UTC14h 20m
2026-04-27 FAD6326 - Apr 27, 08:50 UTCApr 27, 22:50 UTC14h 0m
2026-04-26 FAD6439 - Apr 26, 18:45 UTCApr 27, 14:15 UTC19h 30m
2026-04-26 FAD6323 CCU → MED Apr 26, 14:45 UTCApr 27, 14:15 UTC23h 30m
2026-04-26 FAD6322 - Apr 26, 05:45 UTCApr 26, 10:20 UTC4h 35m
2026-04-24 FAD6319 CCU → MED Apr 24, 21:05 UTCApr 25, 02:10 UTC5h 5m
2026-04-24 FAD6318 - Apr 24, 13:35 UTCApr 24, 18:10 UTC4h 35m
2026-04-23 FAD6315 CCU → MED Apr 23, 14:30 UTCApr 24, 14:05 UTC23h 35m
2026-04-23 FAD6315 CCU → MED Apr 23, 09:45 UTCApr 23, 14:55 UTC5h 10m
2026-04-23 FAD6314 - Apr 23, 00:35 UTCApr 23, 05:25 UTC4h 51m
2026-04-22 FAD6314 - Apr 22, 02:30 UTCApr 23, 01:30 UTC23h 0m
2026-04-21 FAD6311 - Apr 21, 22:25 UTCApr 22, 03:30 UTC5h 5m
2026-04-21 FAD6310 - Apr 21, 18:20 UTCApr 21, 19:05 UTC45m
2026-04-21 FAD6309 - Apr 21, 01:35 UTCApr 21, 15:05 UTC13h 30m
2026-04-20 FAD6308 - Apr 20, 02:20 UTCApr 20, 21:35 UTC19h 16m
2026-04-20 FAD6308 - Apr 20, 01:35 UTCApr 20, 21:35 UTC20h 0m
2026-04-19 FAD6305 - Apr 19, 21:30 UTCApr 20, 17:45 UTC20h 15m
2026-04-19 FAD6303 GZT → MED Apr 19, 03:15 UTCApr 19, 18:55 UTC15h 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-NYA page for operator, model, and routing details .

Mode-S 4BBB21 frequently asked

What is Mode-S code 4BBB21?
4BBB21 is an ICAO 24-bit transponder address. Allocated to Turkey. Assigned to TC-NYA.
Where is Mode-S 4BBB21 registered?
Mode-S code 4BBB21 is allocated to Turkey (TR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4BBB21 broadcasting right now?
No active broadcast right now. Last signal was 18h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4BBB21, octal 22735441, decimal 4,963,105.
What flights does 4BBB21 operate?
Mode-S 4BBB21 has broadcast 20 distinct callsigns, including FAD7301, FAD6342, FAD6762, FAD6345, FAD6315.