Apparatus

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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 1d ago
Flights observed
126
Distinct callsigns
20
Country
TR
Last broadcast
1d 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
FAD9123 - 7 2026-07-15
FAD9122 - 5 2026-07-15
FAD7354 - 5 2026-06-27
FAD9134 - 4 2026-07-16
FAD7301 - 4 2026-06-02
FAD7366 - 3 2026-06-29
FAD7360 - 3 2026-06-30
FAD7312 Rog-Air 3 2026-06-06
FAD7306 Rog-Air 3 2026-06-04
FAD6342 - 3 2026-05-03
FAD9232 - 2 2026-07-08
FAD9135 - 2 2026-06-24
FAD9133 - 2 2026-06-23
FAD7877 - 2 2026-06-15
FAD7832 - 2 2026-06-07
FAD7742 - 2 2026-06-17
FAD7317 - 2 2026-06-09
FAD7307 - 2 2026-06-04
FAD6762 - 2 2026-05-18
FAD6345 Rog-Air 2 2026-05-05

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-16 FAD9134 - Jul 16, 00:20 UTCJul 16, 19:50 UTC19h 30m
2026-07-15 FAD9123 - Jul 15, 23:55 UTCJul 16, 19:50 UTC19h 55m
2026-07-15 FAD9122 - Jul 15, 13:25 UTCJul 16, 00:55 UTC11h 30m
2026-07-08 FAD9233 - Jul 8, 19:20 UTCJul 9, 05:20 UTC10h 0m
2026-07-08 FAD9232 - Jul 8, 18:15 UTCJul 8, 19:15 UTC1h 0m
2026-07-06 FAD9123 - Jul 6, 21:55 UTCJul 7, 00:45 UTC2h 50m
2026-07-06 FAD9123 - Jul 6, 03:45 UTCJul 7, 00:45 UTC21h 0m
2026-07-06 FAD9232 - Jul 6, 00:55 UTCJul 7, 00:15 UTC23h 20m
2026-06-30 FAD7360 - Jun 30, 10:30 UTCJun 30, 20:50 UTC10h 20m
2026-06-29 FAD7360 - Jun 29, 15:04 UTCJun 30, 13:10 UTC22h 6m
2026-06-29 FAD7360 - Jun 29, 12:55 UTCJun 30, 11:25 UTC22h 31m
2026-06-29 FAD7366 - Jun 29, 05:20 UTCJun 29, 15:24 UTC10h 5m
2026-06-28 FAD7366 - Jun 28, 11:39 UTCJun 29, 08:09 UTC20h 30m
2026-06-28 FAD7366 - Jun 28, 09:34 UTCJun 29, 08:09 UTC22h 35m
2026-06-27 FAD7354 - Jun 27, 14:20 UTCJun 28, 12:05 UTC21h 45m
2026-06-27 FAD7354 - Jun 27, 13:49 UTCJun 28, 12:05 UTC22h 15m
2026-06-27 FAD7354 - Jun 27, 11:59 UTCJun 28, 09:39 UTC21h 40m
2026-06-27 FAD7354 - Jun 27, 06:40 UTCJun 28, 05:04 UTC22h 25m
2026-06-27 FAD7354 - Jun 27, 04:19 UTCJun 28, 03:25 UTC23h 5m
2026-06-27 FAD9122 - Jun 27, 04:00 UTCJun 28, 02:14 UTC22h 15m
2026-06-25 FAD9122 - Jun 25, 03:40 UTCJun 25, 14:50 UTC11h 10m
2026-06-24 FAD9122 - Jun 24, 15:05 UTCJun 25, 14:14 UTC23h 10m
2026-06-24 FAD9122 - Jun 24, 13:14 UTCJun 25, 11:54 UTC22h 40m
2026-06-24 FAD9135 - Jun 24, 06:39 UTCJun 25, 04:40 UTC22h 0m
2026-06-24 FAD9135 - Jun 24, 04:20 UTCJun 25, 04:14 UTC23h 55m
2026-06-24 FAD9134 - Jun 24, 03:44 UTCJun 24, 16:05 UTC12h 20m
2026-06-23 FAD9134 - Jun 23, 15:50 UTCJun 24, 13:14 UTC21h 25m
2026-06-23 FAD9134 - Jun 23, 08:20 UTCJun 24, 06:39 UTC22h 20m
2026-06-23 FAD9133 - Jun 23, 06:19 UTCJun 24, 04:55 UTC22h 35m
2026-06-23 FAD9133 - Jun 23, 05:34 UTCJun 24, 04:15 UTC22h 40m
2026-06-22 FAD9132 - Jun 22, 16:20 UTCJun 23, 16:14 UTC23h 55m
2026-06-22 FAD9123 - Jun 22, 15:40 UTCJun 23, 08:20 UTC16h 40m
2026-06-22 FAD9123 - Jun 22, 13:54 UTCJun 23, 08:20 UTC18h 25m
2026-06-21 FAD9123 - Jun 21, 21:44 UTCJun 22, 16:40 UTC18h 55m
2026-06-21 FAD9123 - Jun 21, 17:05 UTCJun 22, 16:14 UTC23h 10m
2026-06-21 FAD7346 - Jun 21, 14:34 UTCJun 22, 13:54 UTC23h 20m
2026-06-20 FAD7829 - Jun 20, 08:44 UTCJun 20, 09:09 UTC25m
2026-06-19 FAD7777 - Jun 19, 12:25 UTCJun 20, 06:49 UTC18h 25m
2026-06-19 FAD7775 - Jun 19, 04:39 UTCJun 19, 10:24 UTC5h 45m
2026-06-18 FAD7745 - Jun 18, 12:45 UTCJun 19, 02:39 UTC13h 54m
2026-06-18 FAD7744 - Jun 18, 10:10 UTCJun 18, 10:20 UTC10m
2026-06-18 FAD7761 - Jun 18, 04:10 UTCJun 18, 04:35 UTC25m
2026-06-17 FAD7760 - Jun 17, 10:00 UTCJun 18, 02:20 UTC16h 20m
2026-06-17 FAD7743 - Jun 17, 04:35 UTCJun 18, 02:20 UTC21h 45m
2026-06-17 FAD7742 - Jun 17, 02:25 UTCJun 17, 02:40 UTC15m
2026-06-16 FAD7742 - Jun 16, 05:00 UTCJun 17, 02:40 UTC21h 41m
2026-06-15 FAD7877 - Jun 15, 12:30 UTCJun 16, 05:10 UTC16h 40m
2026-06-15 FAD7877 - Jun 15, 03:40 UTCJun 16, 01:45 UTC22h 5m
2026-06-14 FAD7975 - Jun 14, 08:25 UTCJun 15, 03:45 UTC19h 19m
2026-06-13 FAD7703 - Jun 13, 13:50 UTCJun 14, 06:20 UTC16h 30m

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 1d 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 FAD9123, FAD9122, FAD7354, FAD9134, FAD7301.