sensors Mode-S transponder

3D2E4E

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-EPUC · CIRRUS SR-20

Hex
3D2E4E
Octal
17227116
Decimal
4,009,550
Country
DE
Tail
D-EPUC
Type
SR20
No current signal · last broadcast 1d ago
Flights observed
1
Distinct callsigns
1
Country
DE
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 3D2E4E.

Country allocation

The ICAO 24-bit address 3D2E4E 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
DEPUC - 1 2026-04-13

Recent flights last 1

DateFlightRouteTakeoffLandingDuration
2026-04-13 DEPUC RTM → RTM Apr 13, 13:20 UTCApr 13, 14:00 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-EPUC page for operator, model, and routing details .

Mode-S 3D2E4E frequently asked

What is Mode-S code 3D2E4E?
3D2E4E is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-EPUC.
Where is Mode-S 3D2E4E registered?
Mode-S code 3D2E4E is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3D2E4E 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 3D2E4E, octal 17227116, decimal 4,009,550.
What flights does 3D2E4E operate?
Mode-S 3D2E4E has broadcast 1 distinct callsign, including DEPUC.