sensors Mode-S transponder

440289

ICAO 24-bit transponder address · allocated to Austria

Currently assigned to OE-IRG · GULFSTREAM 5

Hex
440289
Octal
21001211
Decimal
4,457,097
Country
AT
Tail
OE-IRG
Type
GLF5
No current signal · last broadcast 21h ago
Flights observed
1
Distinct callsigns
1
Country
AT
Last broadcast
21h ago

Last known position

Most recent position reported by Mode-S 440289.

Country allocation

The ICAO 24-bit address 440289 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
OEVMO - 1 2026-04-14

Recent flights last 1

DateFlightRouteTakeoffLandingDuration
2026-04-14 OEVMO - Apr 14, 07:35 UTCApr 14, 08:20 UTC45m

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 OE-IRG page for operator, model, and routing details .

Mode-S 440289 frequently asked

What is Mode-S code 440289?
440289 is an ICAO 24-bit transponder address. Allocated to Austria. Assigned to OE-IRG.
Where is Mode-S 440289 registered?
Mode-S code 440289 is allocated to Austria (AT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 440289 broadcasting right now?
No active broadcast right now. Last signal was 21h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 440289, octal 21001211, decimal 4,457,097.
What flights does 440289 operate?
Mode-S 440289 has broadcast 1 distinct callsign, including OEVMO.