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sensors Mode-S transponder

3D4421

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-EYAZ · SOCATA Tobago

Hex
3D4421
Octal
17242041
Decimal
4,015,137
Country
DE
Tail
D-EYAZ
Type
TOBA
No current signal · last broadcast 3d ago
Flights observed
51
Distinct callsigns
1
Country
DE
Last broadcast
3d ago

Last known position

Most recent position reported by Mode-S 3D4421.

Country allocation

The ICAO 24-bit address 3D4421 falls within the block assigned to Germany (DE) by ICAO Annex 10, Volume III. Every aircraft registered in Germany 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 1 distinct

Callsign Airline Flights Last seen
DEYAZ - 51 2026-07-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 DEYAZ - Jul 25, 07:30 UTCJul 25, 09:45 UTC2h 15m
2026-07-24 DEYAZ - Jul 24, 07:35 UTCJul 24, 09:40 UTC2h 5m
2026-07-23 DEYAZ - Jul 23, 10:00 UTCJul 23, 11:05 UTC1h 5m
2026-07-20 DEYAZ - Jul 20, 14:05 UTCJul 20, 14:55 UTC50m
2026-07-20 DEYAZ - Jul 20, 07:35 UTCJul 20, 09:05 UTC1h 30m
2026-07-18 DEYAZ - Jul 18, 13:35 UTCJul 18, 14:00 UTC25m
2026-07-18 DEYAZ - Jul 18, 11:55 UTCJul 18, 12:55 UTC1h 0m
2026-07-18 DEYAZ - Jul 18, 09:10 UTCJul 18, 09:55 UTC45m
2026-07-18 DEYAZ - Jul 18, 07:35 UTCJul 18, 08:55 UTC1h 20m
2026-07-12 DEYAZ - Jul 12, 15:10 UTCJul 12, 16:30 UTC1h 20m
2026-07-12 DEYAZ - Jul 12, 12:01 UTCJul 12, 13:25 UTC1h 25m
2026-07-10 DEYAZ - Jul 10, 09:20 UTCJul 10, 10:50 UTC1h 30m
2026-07-09 DEYAZ - Jul 9, 13:45 UTCJul 9, 15:30 UTC1h 45m
2026-07-04 DEYAZ - Jul 4, 15:00 UTCJul 4, 15:55 UTC55m
2026-07-04 DEYAZ - Jul 4, 08:50 UTCJul 4, 09:55 UTC1h 5m
2026-06-27 DEYAZ - Jun 27, 11:39 UTCJun 27, 14:05 UTC2h 25m
2026-06-27 DEYAZ - Jun 27, 08:44 UTCJun 27, 10:25 UTC1h 40m
2026-06-26 DEYAZ - Jun 26, 08:10 UTCJun 26, 09:24 UTC1h 15m
2026-06-24 DEYAZ - Jun 24, 08:09 UTCJun 24, 10:10 UTC2h 0m
2026-06-23 DEYAZ - Jun 23, 08:59 UTCJun 23, 10:19 UTC1h 20m
2026-06-22 DEYAZ - Jun 22, 12:05 UTCJun 22, 13:14 UTC1h 10m
2026-06-22 DEYAZ - Jun 22, 09:40 UTCJun 22, 10:34 UTC55m
2026-06-22 DEYAZ - Jun 22, 08:29 UTCJun 22, 08:54 UTC25m
2026-06-21 DEYAZ - Jun 21, 11:59 UTCJun 21, 14:59 UTC3h 0m
2026-06-21 DEYAZ - Jun 21, 07:59 UTCJun 21, 09:55 UTC1h 55m
2026-06-20 DEYAZ - Jun 20, 11:14 UTCJun 20, 12:45 UTC1h 30m
2026-06-20 DEYAZ - Jun 20, 08:19 UTCJun 20, 09:44 UTC1h 25m
2026-06-18 DEYAZ - Jun 18, 14:50 UTCJun 18, 15:40 UTC50m
2026-06-18 DEYAZ - Jun 18, 08:30 UTCJun 18, 09:25 UTC55m
2026-06-16 DEYAZ - Jun 16, 08:20 UTCJun 16, 10:35 UTC2h 15m
2026-06-15 DEYAZ - Jun 15, 08:35 UTCJun 15, 10:50 UTC2h 15m
2026-06-13 DEYAZ - Jun 13, 15:05 UTCJun 13, 15:50 UTC45m
2026-06-13 DEYAZ - Jun 13, 13:35 UTCJun 13, 14:15 UTC40m
2026-06-07 DEYAZ - Jun 7, 13:35 UTCJun 7, 14:55 UTC1h 20m
2026-06-07 DEYAZ - Jun 7, 10:25 UTCJun 7, 11:40 UTC1h 15m
2026-05-25 DEYAZ - May 25, 14:30 UTCMay 25, 15:30 UTC1h 0m
2026-05-25 DEYAZ - May 25, 11:30 UTCMay 25, 13:00 UTC1h 30m
2026-05-24 DEYAZ - May 24, 10:00 UTCMay 24, 11:20 UTC1h 20m
2026-05-24 DEYAZ - May 24, 08:10 UTCMay 24, 09:20 UTC1h 10m
2026-05-17 DEYAZ - May 17, 13:25 UTCMay 17, 14:10 UTC45m
2026-05-17 DEYAZ - May 17, 10:45 UTCMay 17, 11:30 UTC45m
2026-05-16 DEYAZ - May 16, 15:35 UTCMay 16, 15:55 UTC20m
2026-05-16 DEYAZ - May 16, 14:46 UTCMay 16, 15:01 UTC15m
2026-05-01 DEYAZ - May 1, 15:55 UTCMay 1, 16:10 UTC15m
2026-05-01 DEYAZ - May 1, 14:10 UTCMay 1, 14:25 UTC15m
2026-05-01 DEYAZ - May 1, 12:25 UTCMay 1, 13:05 UTC40m
2026-05-01 DEYAZ - May 1, 10:10 UTCMay 1, 10:50 UTC40m
2026-04-26 DEYAZ - Apr 26, 09:20 UTCApr 26, 10:20 UTC1h 0m
2026-04-24 DEYAZ - Apr 24, 14:30 UTCApr 24, 15:25 UTC55m
2026-04-22 DEYAZ - Apr 22, 16:00 UTCApr 22, 16:40 UTC40m

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 D-EYAZ page for operator, model, and routing details .

Mode-S 3D4421 frequently asked

What is Mode-S code 3D4421?
3D4421 is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-EYAZ.
Where is Mode-S 3D4421 registered?
Mode-S code 3D4421 is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3D4421 broadcasting right now?
No active broadcast right now. Last signal was 3d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3D4421, octal 17242041, decimal 4,015,137.
What flights does 3D4421 operate?
Mode-S 3D4421 has broadcast 1 distinct callsign, including DEYAZ.