sensors Mode-S transponder

447D43

ICAO 24-bit transponder address · allocated to Austria

Currently assigned to 3H-DB · DIAMOND DA-40 Club Star

Hex
447D43
Octal
21076503
Decimal
4,488,515
Country
AT
Tail
3H-DB
Type
DA40
No current signal · last broadcast 1d ago
Flights observed
1
Distinct callsigns
1
Country
AT
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 447D43.

Country allocation

The ICAO 24-bit address 447D43 falls within the block assigned to Austria (AT) by ICAO Annex 10, Volume III. Every aircraft registered in Austria 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
MOETA89 - 1 2026-04-13

Recent flights last 1

DateFlightRouteTakeoffLandingDuration
2026-04-13 MOETA89 - Apr 13, 11:50 UTCApr 13, 12:05 UTC15m

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 3H-DB page for operator, model, and routing details .

Mode-S 447D43 frequently asked

What is Mode-S code 447D43?
447D43 is an ICAO 24-bit transponder address. Allocated to Austria. Assigned to 3H-DB.
Where is Mode-S 447D43 registered?
Mode-S code 447D43 is allocated to Austria (AT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 447D43 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 447D43, octal 21076503, decimal 4,488,515.
What flights does 447D43 operate?
Mode-S 447D43 has broadcast 1 distinct callsign, including MOETA89.