Apparatus

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sensors Mode-S transponder

3FF6DF

ICAO 24-bit transponder address · allocated to Germany

Hex
3FF6DF
Octal
17773337
Decimal
4,191,967
Country
DE
No current signal · last broadcast 15d ago
Flights observed
46
Distinct callsigns
1
Country
DE
Last broadcast
15d ago

Last known position

Most recent position reported by Mode-S 3FF6DF.

Country allocation

The ICAO 24-bit address 3FF6DF 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
DMECO - 46 2026-07-24

Recent flights last 46

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

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.

Mode-S 3FF6DF frequently asked

What is Mode-S code 3FF6DF?
3FF6DF is an ICAO 24-bit transponder address. Allocated to Germany.
Where is Mode-S 3FF6DF registered?
Mode-S code 3FF6DF is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3FF6DF broadcasting right now?
No active broadcast right now. Last signal was 15d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3FF6DF, octal 17773337, decimal 4,191,967.
What flights does 3FF6DF operate?
Mode-S 3FF6DF has broadcast 1 distinct callsign, including DMECO.