Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

4BB721

ICAO 24-bit transponder address · allocated to Turkey

Currently assigned to TC-MYA · AIRBUS A-321

Hex
4BB721
Octal
22733441
Decimal
4,962,081
Country
TR
Tail
TC-MYA
Type
A321
No current signal · last broadcast 11h ago
Flights observed
125
Distinct callsigns
16
Country
TR
Last broadcast
11h ago

Last known position

Most recent position reported by Mode-S 4BB721.

Country allocation

The ICAO 24-bit address 4BB721 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 16 distinct

Callsign Airline Flights Last seen
DAH3201 - 21 2026-05-25
DAH3200 - 19 2026-05-24
DAH1226 - 15 2026-05-31
DAH1227 Air Algerie 13 2026-05-31
DAH1209 Air Algerie 12 2026-05-30
DAH1208 Air Algerie 12 2026-05-30
DAH2201 Air Algerie 10 2026-05-31
DAH2200 Air Algerie 9 2026-05-31
DAH2778 Air Algerie 4 2026-06-01
DAH2779 Air Algerie 3 2026-06-01
DAH1800 - 2 2026-06-02
DAH5700 - 1 2026-05-28
DAH2781 - 1 2026-05-23
DAH2780 - 1 2026-05-23
DAH2207 - 1 2026-05-20
DAH2206 - 1 2026-05-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-02 DAH1800 - Jun 2, 08:05 UTCJun 2, 08:55 UTC50m
2026-06-02 DAH1800 - Jun 2, 05:20 UTCJun 2, 06:25 UTC1h 5m
2026-06-01 DAH2779 MUC → MUC Jun 1, 13:05 UTCJun 1, 14:45 UTC1h 40m
2026-06-01 DAH2778 ALG → MUC Jun 1, 07:25 UTCJun 1, 09:25 UTC2h 0m
2026-05-31 DAH2201 BRU → BRU May 31, 17:45 UTCMay 31, 19:30 UTC1h 45m
2026-05-31 DAH2200 BRU → BRU May 31, 13:20 UTCMay 31, 15:40 UTC2h 20m
2026-05-31 DAH1227 ORN → ALG May 31, 10:05 UTCMay 31, 10:50 UTC45m
2026-05-31 DAH1226 - May 31, 08:25 UTCMay 31, 09:10 UTC45m
2026-05-30 DAH1209 CDG → CDG May 30, 09:30 UTCMay 30, 11:15 UTC1h 45m
2026-05-30 DAH1208 CDG → CDG May 30, 05:15 UTCMay 30, 07:10 UTC1h 55m
2026-05-29 DAH1209 CDG → CDG May 29, 18:25 UTCMay 29, 19:55 UTC1h 30m
2026-05-29 DAH1208 CDG → CDG May 29, 14:25 UTCMay 29, 16:20 UTC1h 56m
2026-05-28 DAH5700 - May 28, 12:25 UTCMay 28, 12:40 UTC15m
2026-05-25 DAH3201 - May 25, 01:55 UTCMay 25, 04:40 UTC2h 45m
2026-05-24 DAH3200 - May 24, 21:00 UTCMay 24, 23:46 UTC2h 46m
2026-05-24 DAH2201 BRU → BRU May 24, 16:55 UTCMay 24, 18:55 UTC2h 0m
2026-05-24 DAH2200 BRU → BRU May 24, 13:10 UTCMay 24, 15:30 UTC2h 20m
2026-05-24 DAH1227 ORN → ALG May 24, 10:35 UTCMay 24, 11:05 UTC30m
2026-05-24 DAH1226 - May 24, 07:55 UTCMay 24, 09:20 UTC1h 25m
2026-05-24 DAH1226 - May 24, 05:10 UTCMay 24, 06:25 UTC1h 15m
2026-05-23 DAH1209 CDG → CDG May 23, 22:25 UTCMay 24, 00:10 UTC1h 45m
2026-05-23 DAH1208 CDG → CDG May 23, 19:10 UTCMay 23, 21:00 UTC1h 50m
2026-05-23 DAH2781 - May 23, 15:30 UTCMay 23, 16:45 UTC1h 15m
2026-05-23 DAH2780 - May 23, 07:40 UTCMay 23, 09:10 UTC1h 30m
2026-05-22 DAH1209 CDG → CDG May 22, 18:45 UTCMay 22, 20:25 UTC1h 40m
2026-05-22 DAH1208 CDG → CDG May 22, 15:00 UTCMay 22, 16:50 UTC1h 50m
2026-05-21 DAH2779 MUC → MUC May 21, 08:05 UTCMay 21, 09:55 UTC1h 50m
2026-05-21 DAH2778 ALG → MUC May 21, 03:40 UTCMay 21, 05:55 UTC2h 15m
2026-05-20 DAH2207 - May 20, 20:35 UTCMay 20, 21:40 UTC1h 5m
2026-05-20 DAH2206 - May 20, 17:45 UTCMay 20, 18:55 UTC1h 10m
2026-05-20 DAH1209 CDG → CDG May 20, 09:50 UTCMay 20, 11:20 UTC1h 30m
2026-05-20 DAH1208 CDG → CDG May 20, 06:05 UTCMay 20, 08:10 UTC2h 5m
2026-05-19 DAH2201 BRU → BRU May 19, 17:00 UTCMay 19, 19:00 UTC2h 0m
2026-05-19 DAH2200 BRU → BRU May 19, 13:35 UTCMay 19, 15:50 UTC2h 15m
2026-05-19 DAH1209 CDG → CDG May 19, 09:45 UTCMay 19, 11:20 UTC1h 35m
2026-05-19 DAH1208 CDG → CDG May 19, 05:50 UTCMay 19, 07:50 UTC2h 0m
2026-05-19 DAH3201 - May 19, 00:40 UTCMay 19, 03:25 UTC2h 45m
2026-05-18 DAH3200 - May 18, 20:00 UTCMay 18, 22:40 UTC2h 40m
2026-05-18 DAH2779 MUC → MUC May 18, 16:35 UTCMay 18, 18:20 UTC1h 45m
2026-05-18 DAH2778 ALG → MUC May 18, 12:50 UTCMay 18, 13:35 UTC45m
2026-05-18 DAH2778 ALG → MUC May 18, 09:00 UTCMay 18, 11:00 UTC2h 0m
2026-05-18 DAH3201 - May 18, 03:15 UTCMay 18, 06:10 UTC2h 55m
2026-05-17 DAH3200 - May 17, 22:45 UTCMay 18, 01:20 UTC2h 35m
2026-05-17 DAH2201 BRU → BRU May 17, 18:40 UTCMay 17, 20:40 UTC2h 0m
2026-05-17 DAH2200 BRU → BRU May 17, 15:05 UTCMay 17, 17:15 UTC2h 10m
2026-05-17 DAH1226 - May 17, 11:55 UTCMay 17, 13:15 UTC1h 20m
2026-05-17 DAH3201 - May 17, 03:10 UTCMay 17, 10:05 UTC6h 55m
2026-05-16 DAH3200 - May 16, 22:50 UTCMay 17, 01:00 UTC2h 10m
2026-05-16 DAH1209 CDG → CDG May 16, 19:15 UTCMay 16, 20:55 UTC1h 40m
2026-05-16 DAH1208 CDG → CDG May 16, 14:46 UTCMay 16, 16:40 UTC1h 55m

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

Mode-S 4BB721 frequently asked

What is Mode-S code 4BB721?
4BB721 is an ICAO 24-bit transponder address. Allocated to Turkey. Assigned to TC-MYA.
Where is Mode-S 4BB721 registered?
Mode-S code 4BB721 is allocated to Turkey (TR). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4BB721 broadcasting right now?
No active broadcast right now. Last signal was 11h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4BB721, octal 22733441, decimal 4,962,081.
What flights does 4BB721 operate?
Mode-S 4BB721 has broadcast 16 distinct callsigns, including DAH3201, DAH3200, DAH1226, DAH1227, DAH1209.