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sensors Mode-S transponder

3D371C

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-ETCU

Hex
3D371C
Octal
17233434
Decimal
4,011,804
Country
DE
Tail
D-ETCU
Type
P208
No current signal · last broadcast 1d ago
Flights observed
108
Distinct callsigns
1
Country
DE
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 3D371C.

Country allocation

The ICAO 24-bit address 3D371C 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
DETCU - 108 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 DETCU - Jul 13, 11:30 UTCJul 13, 12:35 UTC1h 5m
2026-07-10 DETCU - Jul 10, 08:50 UTCJul 10, 10:25 UTC1h 35m
2026-07-09 DETCU - Jul 9, 12:10 UTCJul 9, 12:30 UTC20m
2026-07-09 DETCU - Jul 9, 11:15 UTCJul 9, 11:30 UTC15m
2026-07-09 DETCU - Jul 9, 09:20 UTCJul 9, 10:00 UTC40m
2026-07-08 DETCU - Jul 8, 15:15 UTCJul 8, 15:50 UTC35m
2026-07-08 DETCU - Jul 8, 11:00 UTCJul 8, 11:55 UTC55m
2026-07-08 DETCU - Jul 8, 08:15 UTCJul 8, 09:10 UTC55m
2026-07-06 DETCU - Jul 6, 08:45 UTCJul 6, 09:30 UTC45m
2026-07-04 DETCU SGE → SGE Jul 4, 14:15 UTCJul 4, 14:55 UTC40m
2026-07-04 DETCU - Jul 4, 11:30 UTCJul 4, 13:25 UTC1h 55m
2026-07-04 DETCU - Jul 4, 09:50 UTCJul 4, 10:35 UTC45m
2026-07-04 DETCU SGE → SGE Jul 4, 09:15 UTCJul 4, 09:30 UTC15m
2026-07-03 DETCU SGE → SGE Jul 3, 16:15 UTCJul 3, 17:20 UTC1h 5m
2026-07-03 DETCU FDH → SGE Jul 3, 12:35 UTCJul 3, 15:20 UTC2h 45m
2026-07-03 DETCU - Jul 3, 09:15 UTCJul 3, 10:35 UTC1h 20m
2026-07-03 DETCU - Jul 3, 07:35 UTCJul 3, 08:35 UTC1h 0m
2026-07-02 DETCU SGE → SGE Jul 2, 07:55 UTCJul 2, 08:45 UTC50m
2026-06-30 DETCU SGE → SGE Jun 30, 13:20 UTCJun 30, 14:25 UTC1h 5m
2026-06-30 DETCU SGE → SGE Jun 30, 10:30 UTCJun 30, 12:05 UTC1h 35m
2026-06-29 DETCU - Jun 29, 11:50 UTCJun 29, 13:39 UTC1h 50m
2026-06-29 DETCU - Jun 29, 09:25 UTCJun 29, 10:15 UTC50m
2026-06-28 DETCU SGE → SGE Jun 28, 12:55 UTCJun 28, 14:39 UTC1h 45m
2026-06-27 DETCU - Jun 27, 09:00 UTCJun 27, 09:24 UTC25m
2026-06-26 DETCU - Jun 26, 15:29 UTCJun 26, 16:44 UTC1h 15m
2026-06-25 DETCU - Jun 25, 07:45 UTCJun 25, 08:34 UTC50m
2026-06-24 DETCU - Jun 24, 15:24 UTCJun 24, 16:19 UTC55m
2026-06-24 DETCU - Jun 24, 13:50 UTCJun 24, 14:39 UTC50m
2026-06-24 DETCU - Jun 24, 12:50 UTCJun 24, 13:20 UTC30m
2026-06-22 DETCU - Jun 22, 15:45 UTCJun 22, 17:15 UTC1h 30m
2026-06-22 DETCU - Jun 22, 14:05 UTCJun 22, 14:49 UTC45m
2026-06-22 DETCU - Jun 22, 12:34 UTCJun 22, 13:19 UTC45m
2026-06-22 DETCU - Jun 22, 10:44 UTCJun 22, 11:30 UTC45m
2026-06-22 DETCU - Jun 22, 09:14 UTCJun 22, 10:00 UTC45m
2026-06-21 DETCU WVN → SGE Jun 21, 13:04 UTCJun 21, 16:10 UTC3h 5m
2026-06-21 DETCU - Jun 21, 08:25 UTCJun 21, 10:44 UTC2h 20m
2026-06-20 DETCU - Jun 20, 10:49 UTCJun 20, 11:09 UTC20m
2026-06-20 DETCU SGE → SGE Jun 20, 09:29 UTCJun 20, 09:59 UTC30m
2026-06-02 DETCU - Jun 2, 06:30 UTCJun 2, 07:30 UTC1h 0m
2026-05-30 DETCU - May 30, 08:10 UTCMay 30, 09:05 UTC55m
2026-05-29 DETCU - May 29, 14:05 UTCMay 29, 14:50 UTC45m
2026-05-28 DETCU SGE → SGE May 28, 15:35 UTCMay 28, 16:40 UTC1h 5m
2026-05-26 DETCU SGE → SGE May 26, 16:24 UTCMay 26, 16:59 UTC35m
2026-05-26 DETCU - May 26, 16:10 UTCMay 26, 16:15 UTC5m
2026-05-26 DETCU SGE → SGE May 26, 15:54 UTCMay 26, 16:05 UTC10m
2026-05-26 DETCU SGE → SGE May 26, 12:30 UTCMay 26, 14:35 UTC2h 5m
2026-05-26 DETCU SGE → SGE May 26, 10:50 UTCMay 26, 11:00 UTC10m
2026-05-26 DETCU SGE → SGE May 26, 10:05 UTCMay 26, 10:44 UTC40m
2026-05-25 DETCU - May 25, 17:40 UTCMay 25, 18:00 UTC20m
2026-05-25 DETCU - May 25, 16:05 UTCMay 25, 16:30 UTC25m

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

Mode-S 3D371C frequently asked

What is Mode-S code 3D371C?
3D371C is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-ETCU.
Where is Mode-S 3D371C registered?
Mode-S code 3D371C is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3D371C 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 3D371C, octal 17233434, decimal 4,011,804.
What flights does 3D371C operate?
Mode-S 3D371C has broadcast 1 distinct callsign, including DETCU.