sensors Mode-S transponder

3FFA0A

ICAO 24-bit transponder address · allocated to Germany

Currently assigned to D-MENX

Hex
3FFA0A
Octal
17775012
Decimal
4,192,778
Country
DE
Tail
D-MENX
Type
C42
No current signal · last broadcast 20h ago
Flights observed
1
Distinct callsigns
1
Country
DE
Last broadcast
20h ago

Last known position

Most recent position reported by Mode-S 3FFA0A.

Country allocation

The ICAO 24-bit address 3FFA0A 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
DMENX - 1 2026-04-14

Recent flights last 1

DateFlightRouteTakeoffLandingDuration
2026-04-14 DMENX - Apr 14, 09:50 UTCApr 14, 10:15 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-MENX page for operator, model, and routing details .

Mode-S 3FFA0A frequently asked

What is Mode-S code 3FFA0A?
3FFA0A is an ICAO 24-bit transponder address. Allocated to Germany. Assigned to D-MENX.
Where is Mode-S 3FFA0A registered?
Mode-S code 3FFA0A is allocated to Germany (DE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 3FFA0A broadcasting right now?
No active broadcast right now. Last signal was 20h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 3FFA0A, octal 17775012, decimal 4,192,778.
What flights does 3FFA0A operate?
Mode-S 3FFA0A has broadcast 1 distinct callsign, including DMENX.