Apparatus

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sensors Mode-S transponder

3FFA44

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-MFSI · AEROSTYLE Breezer

Hex
3FFA44
Octal
17775104
Decimal
4,192,836
Country
DE
Tail
D-MFSI
Type
BREZ
No current signal · last broadcast 11h ago
Flights observed
161
Distinct callsigns
1
Country
DE
Last broadcast
11h ago

Last known position

Most recent position reported by Mode-S 3FFA44.

Country allocation

The ICAO 24-bit address 3FFA44 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
DMFSI - 161 2026-07-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 DMFSI - Jul 17, 14:20 UTCJul 17, 15:40 UTC1h 20m
2026-07-17 DMFSI - Jul 17, 13:20 UTCJul 17, 13:29 UTC10m
2026-07-17 DMFSI - Jul 17, 09:15 UTCJul 17, 10:15 UTC1h 0m
2026-07-16 DMFSI - Jul 16, 14:29 UTCJul 16, 15:40 UTC1h 10m
2026-07-16 DMFSI - Jul 16, 13:40 UTCJul 16, 13:54 UTC15m
2026-07-16 DMFSI - Jul 16, 12:30 UTCJul 16, 12:55 UTC25m
2026-07-13 DMFSI - Jul 13, 10:05 UTCJul 13, 10:30 UTC25m
2026-07-13 DMFSI - Jul 13, 07:20 UTCJul 13, 09:20 UTC2h 0m
2026-07-12 DMFSI - Jul 12, 13:30 UTCJul 12, 14:20 UTC50m
2026-07-12 DMFSI - Jul 12, 11:40 UTCJul 12, 12:55 UTC1h 15m
2026-07-12 DMFSI - Jul 12, 10:05 UTCJul 12, 10:55 UTC50m
2026-07-12 DMFSI - Jul 12, 08:45 UTCJul 12, 09:30 UTC45m
2026-07-11 DMFSI - Jul 11, 17:00 UTCJul 11, 17:15 UTC15m
2026-07-11 DMFSI - Jul 11, 13:30 UTCJul 11, 14:50 UTC1h 20m
2026-07-11 DMFSI - Jul 11, 11:40 UTCJul 11, 12:30 UTC50m
2026-07-11 DMFSI - Jul 11, 10:30 UTCJul 11, 11:00 UTC30m
2026-07-11 DMFSI - Jul 11, 07:15 UTCJul 11, 09:05 UTC1h 50m
2026-07-10 DMFSI - Jul 10, 15:40 UTCJul 10, 16:10 UTC30m
2026-07-10 DMFSI - Jul 10, 14:20 UTCJul 10, 14:50 UTC30m
2026-07-10 DMFSI - Jul 10, 11:50 UTCJul 10, 13:25 UTC1h 35m
2026-07-10 DMFSI - Jul 10, 08:50 UTCJul 10, 10:05 UTC1h 15m
2026-07-09 DMFSI - Jul 9, 14:35 UTCJul 9, 15:25 UTC50m
2026-07-09 DMFSI - Jul 9, 12:00 UTCJul 9, 13:35 UTC1h 35m
2026-07-09 DMFSI - Jul 9, 09:30 UTCJul 9, 10:40 UTC1h 10m
2026-07-07 DMFSI - Jul 7, 14:20 UTCJul 7, 15:35 UTC1h 15m
2026-07-07 DMFSI - Jul 7, 06:50 UTCJul 7, 08:50 UTC2h 0m
2026-07-04 DMFSI - Jul 4, 09:15 UTCJul 4, 10:25 UTC1h 10m
2026-07-04 DMFSI - Jul 4, 07:00 UTCJul 4, 08:05 UTC1h 5m
2026-07-02 DMFSI - Jul 2, 14:40 UTCJul 2, 15:40 UTC1h 0m
2026-07-02 DMFSI - Jul 2, 13:10 UTCJul 2, 14:05 UTC55m
2026-07-02 DMFSI - Jul 2, 07:20 UTCJul 2, 08:45 UTC1h 25m
2026-06-30 DMFSI - Jun 30, 14:35 UTCJun 30, 15:25 UTC50m
2026-06-30 DMFSI - Jun 30, 12:35 UTCJun 30, 13:35 UTC1h 0m
2026-06-30 DMFSI - Jun 30, 09:55 UTCJun 30, 10:45 UTC50m
2026-06-30 DMFSI - Jun 30, 07:15 UTCJun 30, 08:45 UTC1h 30m
2026-06-25 DMFSI - Jun 25, 07:19 UTCJun 25, 08:55 UTC1h 35m
2026-06-24 DMFSI - Jun 24, 17:34 UTCJun 24, 17:50 UTC15m
2026-06-24 DMFSI - Jun 24, 13:50 UTCJun 24, 14:50 UTC1h 0m
2026-06-24 DMFSI - Jun 24, 09:15 UTCJun 24, 10:10 UTC55m
2026-06-23 DMFSI - Jun 23, 14:49 UTCJun 23, 15:44 UTC55m
2026-06-23 DMFSI - Jun 23, 13:39 UTCJun 23, 13:59 UTC20m
2026-06-23 DMFSI - Jun 23, 12:40 UTCJun 23, 13:05 UTC25m
2026-06-23 DMFSI - Jun 23, 09:59 UTCJun 23, 10:39 UTC40m
2026-06-23 DMFSI - Jun 23, 07:45 UTCJun 23, 08:54 UTC1h 10m
2026-06-21 DMFSI - Jun 21, 10:34 UTCJun 21, 12:24 UTC1h 50m
2026-06-21 DMFSI - Jun 21, 07:40 UTCJun 21, 09:44 UTC2h 5m
2026-06-20 DMFSI - Jun 20, 14:59 UTCJun 20, 15:44 UTC45m
2026-06-20 DMFSI - Jun 20, 10:20 UTCJun 20, 10:55 UTC35m
2026-06-20 DMFSI - Jun 20, 09:34 UTCJun 20, 09:49 UTC15m
2026-06-20 DMFSI - Jun 20, 08:14 UTCJun 20, 08:49 UTC35m

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

Mode-S 3FFA44 frequently asked

What is Mode-S code 3FFA44?
3FFA44 is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-MFSI.
Where is Mode-S 3FFA44 registered?
Mode-S code 3FFA44 is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3FFA44 broadcasting right now?
No active broadcast right now. Last signal was 11h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3FFA44, octal 17775104, decimal 4,192,836.
What flights does 3FFA44 operate?
Mode-S 3FFA44 has broadcast 1 distinct callsign, including DMFSI.