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sensors Mode-S transponder

3DDC75

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-HDSV · AIRBUS HELICOPTERS EC-145

Hex
3DDC75
Octal
17356165
Decimal
4,054,133
Country
DE
Tail
D-HDSV
Type
EC45
No current signal · last broadcast 5d ago
Flights observed
290
Distinct callsigns
3
Country
DE
Last broadcast
5d ago

Last known position

Most recent position reported by Mode-S 3DDC75.

Country allocation

The ICAO 24-bit address 3DDC75 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 3 distinct

Callsign Airline Flights Last seen
CHX42 - 258 2026-07-13
CHXE5 - 31 2026-06-06
DHDSV - 1 2026-04-15

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 CHX42 - Jul 13, 11:45 UTCJul 13, 12:10 UTC25m
2026-07-13 CHX42 - Jul 13, 10:50 UTCJul 13, 11:05 UTC15m
2026-07-13 CHX42 - Jul 13, 08:30 UTCJul 13, 08:50 UTC20m
2026-07-12 CHX42 - Jul 12, 12:50 UTCJul 12, 13:05 UTC15m
2026-07-12 CHX42 - Jul 12, 11:45 UTCJul 12, 12:05 UTC20m
2026-07-12 CHX42 - Jul 12, 10:40 UTCJul 12, 10:55 UTC15m
2026-07-12 CHX42 - Jul 12, 09:20 UTCJul 12, 10:05 UTC45m
2026-07-12 CHX42 - Jul 12, 08:35 UTCJul 12, 08:45 UTC10m
2026-07-11 CHX42 - Jul 11, 17:45 UTCJul 11, 17:55 UTC10m
2026-07-11 CHX42 - Jul 11, 16:20 UTCJul 11, 17:20 UTC1h 0m
2026-07-11 CHX42 - Jul 11, 13:05 UTCJul 11, 13:35 UTC30m
2026-07-11 CHX42 - Jul 11, 11:50 UTCJul 11, 12:35 UTC45m
2026-07-11 CHX42 - Jul 11, 05:05 UTCJul 11, 05:15 UTC10m
2026-07-11 CHX42 - Jul 11, 04:01 UTCJul 11, 04:10 UTC10m
2026-07-10 CHX42 - Jul 10, 16:50 UTCJul 10, 17:00 UTC10m
2026-07-10 CHX42 - Jul 10, 14:20 UTCJul 10, 15:35 UTC1h 15m
2026-07-10 CHX42 - Jul 10, 12:40 UTCJul 10, 13:45 UTC1h 5m
2026-07-10 CHX42 - Jul 10, 11:00 UTCJul 10, 11:25 UTC25m
2026-07-10 CHX42 - Jul 10, 09:40 UTCJul 10, 10:25 UTC45m
2026-07-09 CHX42 - Jul 9, 16:15 UTCJul 9, 17:15 UTC1h 0m
2026-07-09 CHX42 - Jul 9, 15:15 UTCJul 9, 15:25 UTC10m
2026-07-09 CHX42 - Jul 9, 14:30 UTCJul 9, 14:45 UTC15m
2026-07-09 CHX42 - Jul 9, 12:50 UTCJul 9, 13:05 UTC15m
2026-07-09 CHX42 - Jul 9, 11:00 UTCJul 9, 12:20 UTC1h 20m
2026-07-09 CHX42 - Jul 9, 09:50 UTCJul 9, 10:30 UTC40m
2026-07-09 CHX42 - Jul 9, 09:00 UTCJul 9, 09:10 UTC10m
2026-07-09 CHX42 - Jul 9, 03:25 UTCJul 9, 04:15 UTC50m
2026-07-09 CHX42 - Jul 9, 02:40 UTCJul 9, 02:55 UTC15m
2026-07-08 CHX42 - Jul 8, 17:30 UTCJul 8, 18:35 UTC1h 5m
2026-07-08 CHX42 - Jul 8, 13:20 UTCJul 8, 15:30 UTC2h 10m
2026-07-08 CHX42 - Jul 8, 11:20 UTCJul 8, 11:30 UTC10m
2026-07-08 CHX42 - Jul 8, 08:40 UTCJul 8, 10:45 UTC2h 5m
2026-07-08 CHX42 - Jul 8, 07:40 UTCJul 8, 07:50 UTC10m
2026-07-08 CHX42 - Jul 8, 07:00 UTCJul 8, 07:10 UTC10m
2026-07-08 CHX42 - Jul 8, 00:00 UTCJul 8, 00:30 UTC30m
2026-07-07 CHX42 - Jul 7, 23:05 UTCJul 7, 23:15 UTC10m
2026-07-07 CHX42 - Jul 7, 22:00 UTCJul 7, 22:15 UTC15m
2026-07-07 CHX42 - Jul 7, 20:45 UTCJul 7, 21:00 UTC15m
2026-07-07 CHX42 - Jul 7, 19:15 UTCJul 7, 20:20 UTC1h 5m
2026-07-07 CHX42 - Jul 7, 10:50 UTCJul 7, 11:05 UTC15m
2026-07-07 CHX42 - Jul 7, 09:05 UTCJul 7, 09:20 UTC15m
2026-07-06 CHX42 - Jul 6, 19:55 UTCJul 6, 20:10 UTC15m
2026-07-06 CHX42 - Jul 6, 19:35 UTCJul 6, 19:50 UTC15m
2026-07-06 CHX42 - Jul 6, 18:30 UTCJul 6, 18:50 UTC20m
2026-07-06 CHX42 - Jul 6, 17:00 UTCJul 6, 18:20 UTC1h 20m
2026-07-06 CHX42 - Jul 6, 16:05 UTCJul 6, 16:25 UTC20m
2026-07-06 CHX42 - Jul 6, 12:30 UTCJul 6, 12:55 UTC25m
2026-07-06 CHX42 - Jul 6, 10:45 UTCJul 6, 11:00 UTC15m
2026-07-05 CHX42 - Jul 5, 21:20 UTCJul 5, 21:35 UTC15m
2026-07-05 CHX42 - Jul 5, 19:55 UTCJul 5, 20:50 UTC55m

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

Mode-S 3DDC75 frequently asked

What is Mode-S code 3DDC75?
3DDC75 is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-HDSV.
Where is Mode-S 3DDC75 registered?
Mode-S code 3DDC75 is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3DDC75 broadcasting right now?
No active broadcast right now. Last signal was 5d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3DDC75, octal 17356165, decimal 4,054,133.
What flights does 3DDC75 operate?
Mode-S 3DDC75 has broadcast 3 distinct callsigns, including CHX42, CHXE5, DHDSV.