Apparatus

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sensors Mode-S transponder

3D0538

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-EAFO · CESSNA 182 Skylane

Hex
3D0538
Octal
17202470
Decimal
3,999,032
Country
DE
Tail
D-EAFO
Type
C182
No current signal · last broadcast 11d ago
Flights observed
51
Distinct callsigns
1
Country
DE
Last broadcast
11d ago

Last known position

Most recent position reported by Mode-S 3D0538.

Country allocation

The ICAO 24-bit address 3D0538 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
DEAFO - 51 2026-05-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 DEAFO - May 30, 10:40 UTCMay 30, 11:00 UTC20m
2026-05-30 DEAFO - May 30, 09:35 UTCMay 30, 10:00 UTC25m
2026-05-30 DEAFO KEL → KEL May 30, 08:15 UTCMay 30, 08:50 UTC35m
2026-05-25 DEAFO KEL → KEL May 25, 15:35 UTCMay 25, 16:05 UTC30m
2026-05-25 DEAFO - May 25, 14:30 UTCMay 25, 15:00 UTC30m
2026-05-25 DEAFO KEL → KEL May 25, 13:25 UTCMay 25, 14:00 UTC35m
2026-05-25 DEAFO KEL → KEL May 25, 07:40 UTCMay 25, 12:50 UTC5h 10m
2026-05-24 DEAFO KEL → KEL May 24, 15:45 UTCMay 24, 16:15 UTC30m
2026-05-24 DEAFO KEL → KEL May 24, 14:40 UTCMay 24, 15:00 UTC20m
2026-05-24 DEAFO - May 24, 09:25 UTCMay 24, 14:05 UTC4h 40m
2026-05-24 DEAFO KEL → KEL May 24, 07:30 UTCMay 24, 08:40 UTC1h 10m
2026-05-23 DEAFO - May 23, 15:45 UTCMay 23, 16:00 UTC15m
2026-05-23 DEAFO - May 23, 14:40 UTCMay 23, 14:55 UTC15m
2026-05-23 DEAFO - May 23, 13:35 UTCMay 23, 14:00 UTC25m
2026-05-23 DEAFO KEL → KEL May 23, 11:10 UTCMay 23, 12:55 UTC1h 45m
2026-05-23 DEAFO KEL → KEL May 23, 08:20 UTCMay 23, 10:05 UTC1h 45m
2026-05-23 DEAFO - May 23, 07:15 UTCMay 23, 07:40 UTC25m
2026-05-22 DEAFO - May 22, 16:10 UTCMay 22, 16:30 UTC20m
2026-05-17 DEAFO - May 17, 11:30 UTCMay 17, 11:40 UTC10m
2026-05-17 DEAFO - May 17, 10:20 UTCMay 17, 10:45 UTC25m
2026-05-17 DEAFO - May 17, 08:30 UTCMay 17, 09:25 UTC55m
2026-05-17 DEAFO KEL → KEL May 17, 07:20 UTCMay 17, 07:45 UTC25m
2026-05-15 DEAFO KEL → KEL May 15, 09:30 UTCMay 15, 09:50 UTC20m
2026-05-15 DEAFO KEL → KEL May 15, 08:00 UTCMay 15, 08:35 UTC35m
2026-05-10 DEAFO KEL → KEL May 10, 12:19 UTCMay 10, 12:34 UTC15m
2026-05-10 DEAFO - May 10, 11:00 UTCMay 10, 11:35 UTC35m
2026-05-10 DEAFO - May 10, 09:55 UTCMay 10, 10:19 UTC25m
2026-05-10 DEAFO KEL → KEL May 10, 08:25 UTCMay 10, 08:40 UTC15m
2026-05-10 DEAFO KEL → KEL May 10, 07:25 UTCMay 10, 07:45 UTC20m
2026-05-09 DEAFO - May 9, 16:10 UTCMay 9, 16:40 UTC30m
2026-05-09 DEAFO - May 9, 14:10 UTCMay 9, 15:15 UTC1h 5m
2026-05-09 DEAFO KEL → KEL May 9, 13:05 UTCMay 9, 13:25 UTC20m
2026-05-09 DEAFO - May 9, 11:30 UTCMay 9, 11:45 UTC15m
2026-05-09 DEAFO - May 9, 09:35 UTCMay 9, 09:55 UTC20m
2026-05-09 DEAFO - May 9, 08:25 UTCMay 9, 08:55 UTC30m
2026-05-08 DEAFO KEL → KEL May 8, 16:20 UTCMay 8, 16:35 UTC15m
2026-05-08 DEAFO - May 8, 15:25 UTCMay 8, 15:45 UTC20m
2026-05-01 DEAFO - May 1, 15:40 UTCMay 1, 15:55 UTC15m
2026-05-01 DEAFO - May 1, 13:30 UTCMay 1, 15:05 UTC1h 35m
2026-05-01 DEAFO KEL → KEL May 1, 10:55 UTCMay 1, 12:45 UTC1h 50m
2026-05-01 DEAFO - May 1, 10:10 UTCMay 1, 10:20 UTC10m
2026-05-01 DEAFO - May 1, 08:40 UTCMay 1, 08:55 UTC15m
2026-05-01 DEAFO - May 1, 07:20 UTCMay 1, 08:05 UTC45m
2026-04-26 DEAFO - Apr 26, 15:00 UTCApr 26, 15:25 UTC25m
2026-04-26 DEAFO KEL → KEL Apr 26, 13:55 UTCApr 26, 14:20 UTC25m
2026-04-26 DEAFO KEL → KEL Apr 26, 11:50 UTCApr 26, 13:15 UTC1h 25m
2026-04-26 DEAFO - Apr 26, 07:35 UTCApr 26, 11:10 UTC3h 35m
2026-04-21 DEAFO - Apr 21, 08:10 UTCApr 21, 08:25 UTC15m
2026-04-18 DEAFO - Apr 18, 11:10 UTCApr 18, 11:40 UTC30m
2026-04-18 DEAFO KEL → KEL Apr 18, 09:50 UTCApr 18, 10:20 UTC30m

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

Mode-S 3D0538 frequently asked

What is Mode-S code 3D0538?
3D0538 is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-EAFO.
Where is Mode-S 3D0538 registered?
Mode-S code 3D0538 is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3D0538 broadcasting right now?
No active broadcast right now. Last signal was 11d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3D0538, octal 17202470, decimal 3,999,032.
What flights does 3D0538 operate?
Mode-S 3D0538 has broadcast 1 distinct callsign, including DEAFO.