sensors Mode-S transponder

3C54A5

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-AEEE · AIRBUS A-321neo

Hex
3C54A5
Octal
17052245
Decimal
3,953,829
Country
DE
Tail
D-AEEE
Type
A21N
No current signal · last broadcast 14h ago
Flights observed
9
Distinct callsigns
5
Country
DE
Last broadcast
14h ago

Last known position

Most recent position reported by Mode-S 3C54A5.

Country allocation

The ICAO 24-bit address 3C54A5 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 5 distinct

Callsign Airline Flights Last seen
EWG3HM Eurowings 3 2026-04-13
EWG9MY - 2 2026-04-14
EWG77F - 2 2026-04-13
EWG6951 - 1 2026-04-13
EWG19B - 1 2026-04-12

Recent flights last 9

DateFlightRouteTakeoffLandingDuration
2026-04-14 EWG9MY - Apr 14, 09:10 UTCApr 14, 11:05 UTC1h 55m
2026-04-14 EWG9MY - Apr 14, 08:35 UTCApr 14, 09:05 UTC30m
2026-04-13 EWG77F - Apr 13, 16:25 UTCApr 13, 19:20 UTC2h 55m
2026-04-13 EWG77F - Apr 13, 15:15 UTCApr 13, 15:35 UTC20m
2026-04-13 EWG3HM DUS → LPA Apr 13, 12:20 UTCApr 13, 13:05 UTC45m
2026-04-13 EWG3HM DUS → LPA Apr 13, 11:55 UTCApr 13, 13:05 UTC1h 10m
2026-04-13 EWG3HM DUS → LPA Apr 13, 09:15 UTCApr 13, 12:15 UTC3h 0m
2026-04-13 EWG6951 - Apr 13, 06:50 UTCApr 13, 07:45 UTC55m
2026-04-12 EWG19B - Apr 12, 17:25 UTCApr 12, 20:15 UTC2h 50m

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

Mode-S 3C54A5 frequently asked

What is Mode-S code 3C54A5?
3C54A5 is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-AEEE.
Where is Mode-S 3C54A5 registered?
Mode-S code 3C54A5 is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3C54A5 broadcasting right now?
No active broadcast right now. Last signal was 14h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3C54A5, octal 17052245, decimal 3,953,829.
What flights does 3C54A5 operate?
Mode-S 3C54A5 has broadcast 5 distinct callsigns, including EWG3HM, EWG9MY, EWG77F, EWG6951, EWG19B.