Apparatus

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sensors Mode-S transponder

3CD2FE

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-CHFA · CESSNA 550 Citation S2

Hex
3CD2FE
Octal
17151376
Decimal
3,986,174
Country
DE
Tail
D-CHFA
Type
C550
No current signal · last broadcast 8h ago
Flights observed
44
Distinct callsigns
1
Country
DE
Last broadcast
8h ago

Last known position

Most recent position reported by Mode-S 3CD2FE.

Country allocation

The ICAO 24-bit address 3CD2FE 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
DCHFA - 44 2026-07-04

Recent flights last 44

DateFlightRouteTakeoffLandingDuration
2026-07-04 DCHFA - Jul 4, 12:30 UTCJul 4, 14:40 UTC2h 10m
2026-07-02 DCHFA - Jul 2, 21:35 UTCJul 2, 22:30 UTC55m
2026-07-02 DCHFA - Jul 2, 19:50 UTCJul 2, 21:30 UTC1h 40m
2026-07-02 DCHFA - Jul 2, 18:45 UTCJul 2, 19:25 UTC40m
2026-07-02 DCHFA - Jul 2, 17:15 UTCJul 2, 18:00 UTC45m
2026-07-02 DCHFA - Jul 2, 14:00 UTCJul 2, 14:55 UTC55m
2026-07-02 DCHFA - Jul 2, 10:35 UTCJul 2, 12:05 UTC1h 30m
2026-07-02 DCHFA - Jul 2, 05:25 UTCJul 2, 06:00 UTC35m
2026-07-02 DCHFA - Jul 2, 04:10 UTCJul 2, 04:40 UTC30m
2026-06-30 DCHFA - Jun 30, 07:35 UTCJun 30, 08:00 UTC25m
2026-06-30 DCHFA - Jun 30, 04:00 UTCJun 30, 04:25 UTC25m
2026-06-27 DCHFA - Jun 27, 10:29 UTCJun 27, 10:50 UTC20m
2026-06-27 DCHFA - Jun 27, 08:14 UTCJun 27, 09:55 UTC1h 40m
2026-06-25 DCHFA - Jun 25, 01:04 UTCJun 25, 02:39 UTC1h 35m
2026-06-24 DCHFA - Jun 24, 19:59 UTCJun 24, 21:34 UTC1h 35m
2026-06-23 DCHFA - Jun 23, 22:40 UTCJun 23, 23:34 UTC55m
2026-06-23 DCHFA - Jun 23, 20:10 UTCJun 23, 20:29 UTC20m
2026-06-23 DCHFA - Jun 23, 18:20 UTCJun 23, 19:10 UTC50m
2026-06-21 DCHFA - Jun 21, 13:15 UTCJun 21, 13:54 UTC40m
2026-06-21 DCHFA - Jun 21, 06:35 UTCJun 21, 07:14 UTC40m
2026-06-18 DCHFA - Jun 18, 16:10 UTCJun 18, 16:40 UTC30m
2026-06-10 DCHFA - Jun 10, 07:10 UTCJun 10, 07:50 UTC40m
2026-06-09 DCHFA - Jun 9, 09:15 UTCJun 9, 10:10 UTC55m
2026-06-08 DCHFA - Jun 8, 23:40 UTCJun 9, 00:35 UTC55m
2026-06-08 DCHFA - Jun 8, 21:50 UTCJun 8, 23:05 UTC1h 15m
2026-06-08 DCHFA - Jun 8, 16:45 UTCJun 8, 19:20 UTC2h 35m
2026-06-03 DCHFA - Jun 3, 10:35 UTCJun 3, 11:10 UTC35m
2026-06-02 DCHFA - Jun 2, 07:05 UTCJun 2, 08:05 UTC1h 0m
2026-05-31 DCHFA - May 31, 21:40 UTCMay 31, 22:15 UTC35m
2026-05-31 DCHFA - May 31, 18:45 UTCMay 31, 19:10 UTC25m
2026-05-28 DCHFA BRU → DUS May 28, 00:25 UTCMay 28, 02:00 UTC1h 35m
2026-05-27 DCHFA - May 27, 19:05 UTCMay 27, 20:40 UTC1h 35m
2026-05-25 DCHFA - May 25, 22:49 UTCMay 25, 23:40 UTC50m
2026-05-25 DCHFA - May 25, 18:15 UTCMay 25, 19:15 UTC1h 0m
2026-05-21 DCHFA - May 21, 12:20 UTCMay 21, 12:45 UTC25m
2026-05-21 DCHFA - May 21, 07:45 UTCMay 21, 08:15 UTC30m
2026-05-19 DCHFA - May 19, 22:10 UTCMay 19, 22:55 UTC45m
2026-05-19 DCHFA - May 19, 21:15 UTCMay 19, 21:45 UTC30m
2026-05-19 DCHFA - May 19, 14:35 UTCMay 19, 15:10 UTC35m
2026-05-19 DCHFA - May 19, 13:10 UTCMay 19, 13:50 UTC40m
2026-05-18 DCHFA - May 18, 18:45 UTCMay 18, 19:20 UTC35m
2026-05-18 DCHFA - May 18, 17:45 UTCMay 18, 18:20 UTC35m
2026-05-18 DCHFA - May 18, 12:40 UTCMay 18, 13:20 UTC40m
2026-05-18 DCHFA - May 18, 11:30 UTCMay 18, 11:55 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-CHFA page for operator, model, and routing details .

Mode-S 3CD2FE frequently asked

What is Mode-S code 3CD2FE?
3CD2FE is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-CHFA.
Where is Mode-S 3CD2FE registered?
Mode-S code 3CD2FE is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3CD2FE broadcasting right now?
No active broadcast right now. Last signal was 8h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3CD2FE, octal 17151376, decimal 3,986,174.
What flights does 3CD2FE operate?
Mode-S 3CD2FE has broadcast 1 distinct callsign, including DCHFA.