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sensors Mode-S transponder

3C4438

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-AAAX · BOMBARDIER CL-600 Challenger

Hex
3C4438
Octal
17042070
Decimal
3,949,624
Country
DE
Tail
D-AAAX
Type
CL60
No current signal · last broadcast 9h ago
Flights observed
119
Distinct callsigns
1
Country
DE
Last broadcast
9h ago

Last known position

Most recent position reported by Mode-S 3C4438.

Country allocation

The ICAO 24-bit address 3C4438 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
DAAAX - 119 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DAAAX - Jul 26, 11:25 UTCJul 26, 14:40 UTC3h 15m
2026-07-25 DAAAX - Jul 25, 09:10 UTCJul 25, 09:55 UTC45m
2026-07-23 DAAAX - Jul 23, 14:55 UTCJul 23, 17:25 UTC2h 30m
2026-07-21 DAAAX BUD → LTN Jul 21, 10:05 UTCJul 21, 12:15 UTC2h 10m
2026-07-21 DAAAX - Jul 21, 07:10 UTCJul 21, 08:05 UTC55m
2026-07-20 DAAAX - Jul 20, 05:20 UTCJul 20, 06:25 UTC1h 5m
2026-07-19 DAAAX - Jul 19, 10:40 UTCJul 19, 13:10 UTC2h 30m
2026-07-18 DAAAX - Jul 18, 11:05 UTCJul 18, 12:15 UTC1h 10m
2026-07-17 DAAAX - Jul 17, 11:20 UTCJul 17, 13:55 UTC2h 35m
2026-07-16 DAAAX - Jul 16, 13:49 UTCJul 16, 14:45 UTC55m
2026-07-16 DAAAX - Jul 16, 10:04 UTCJul 16, 11:34 UTC1h 30m
2026-07-15 DAAAX - Jul 15, 11:35 UTCJul 15, 13:20 UTC1h 45m
2026-07-13 DAAAX NCE → OBF Jul 13, 11:05 UTCJul 13, 12:00 UTC55m
2026-07-13 DAAAX - Jul 13, 08:40 UTCJul 13, 09:50 UTC1h 10m
2026-07-13 DAAAX - Jul 13, 07:15 UTCJul 13, 07:55 UTC40m
2026-07-12 DAAAX NCE → BQH Jul 12, 12:40 UTCJul 12, 14:20 UTC1h 40m
2026-07-10 DAAAX - Jul 10, 12:50 UTCJul 10, 14:30 UTC1h 40m
2026-07-10 DAAAX - Jul 10, 08:50 UTCJul 10, 09:15 UTC25m
2026-07-09 DAAAX NCE → LTN Jul 9, 13:25 UTCJul 9, 15:10 UTC1h 45m
2026-07-09 DAAAX - Jul 9, 09:30 UTCJul 9, 10:55 UTC1h 25m
2026-07-09 DAAAX - Jul 9, 09:15 UTCJul 9, 09:25 UTC10m
2026-07-08 DAAAX - Jul 8, 16:30 UTCJul 8, 18:10 UTC1h 40m
2026-07-08 DAAAX - Jul 8, 12:50 UTCJul 8, 14:30 UTC1h 40m
2026-07-07 DAAAX - Jul 7, 10:10 UTCJul 7, 11:50 UTC1h 40m
2026-07-06 DAAAX CGN → OBF Jul 6, 10:40 UTCJul 6, 11:20 UTC40m
2026-07-05 DAAAX NUE → CGN Jul 5, 10:25 UTCJul 5, 11:00 UTC35m
2026-07-04 DAAAX BCN → NUE Jul 4, 11:25 UTCJul 4, 13:05 UTC1h 40m
2026-07-03 DAAAX - Jul 3, 10:15 UTCJul 3, 11:10 UTC55m
2026-07-03 DAAAX IBZ → NCE Jul 3, 07:10 UTCJul 3, 08:25 UTC1h 15m
2026-07-03 DAAAX BCN → IBZ Jul 3, 04:40 UTCJul 3, 05:15 UTC35m
2026-07-02 DAAAX - Jul 2, 14:20 UTCJul 2, 15:55 UTC1h 35m
2026-07-02 DAAAX - Jul 2, 11:30 UTCJul 2, 12:25 UTC55m
2026-07-02 DAAAX AMS → LBG Jul 2, 09:15 UTCJul 2, 10:05 UTC50m
2026-07-02 DAAAX OBF → AMS Jul 2, 06:30 UTCJul 2, 07:45 UTC1h 15m
2026-06-30 DAAAX - Jun 30, 17:45 UTCJun 30, 18:20 UTC35m
2026-06-30 DAAAX - Jun 30, 15:45 UTCJun 30, 16:45 UTC1h 0m
2026-06-30 DAAAX - Jun 30, 11:05 UTCJun 30, 12:40 UTC1h 35m
2026-06-29 DAAAX - Jun 29, 15:09 UTCJun 29, 15:54 UTC45m
2026-06-29 DAAAX - Jun 29, 13:49 UTCJun 29, 14:14 UTC25m
2026-06-29 DAAAX CEQ → SZG Jun 29, 10:24 UTCJun 29, 11:29 UTC1h 5m
2026-06-29 DAAAX OBF → CEQ Jun 29, 07:05 UTCJun 29, 08:09 UTC1h 5m
2026-06-28 DAAAX - Jun 28, 14:39 UTCJun 28, 16:25 UTC1h 45m
2026-06-27 DAAAX - Jun 27, 12:45 UTCJun 27, 13:35 UTC50m
2026-06-27 DAAAX - Jun 27, 09:40 UTCJun 27, 10:25 UTC45m
2026-06-26 DAAAX - Jun 26, 12:55 UTCJun 26, 13:34 UTC40m
2026-06-26 DAAAX - Jun 26, 10:15 UTCJun 26, 11:55 UTC1h 40m
2026-06-25 DAAAX NCE → BQH Jun 25, 16:29 UTCJun 25, 18:04 UTC1h 35m
2026-06-25 DAAAX - Jun 25, 13:55 UTCJun 25, 15:34 UTC1h 40m
2026-06-25 DAAAX GVA → FAB Jun 25, 09:25 UTCJun 25, 10:39 UTC1h 15m
2026-06-24 DAAAX - Jun 24, 14:00 UTCJun 24, 15:14 UTC1h 15m

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

Mode-S 3C4438 frequently asked

What is Mode-S code 3C4438?
3C4438 is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-AAAX.
Where is Mode-S 3C4438 registered?
Mode-S code 3C4438 is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3C4438 broadcasting right now?
No active broadcast right now. Last signal was 9h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3C4438, octal 17042070, decimal 3,949,624.
What flights does 3C4438 operate?
Mode-S 3C4438 has broadcast 1 distinct callsign, including DAAAX.