Apparatus

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sensors Mode-S transponder

440686

ICAO 24-bit transponder address · allocated to Austria

Currently assigned to OE-ALU · CESSNA 150

Hex
440686
Octal
21003206
Decimal
4,458,118
Country
AT
Tail
OE-ALU
Type
C150
No current signal · last broadcast 1d ago
Flights observed
25
Distinct callsigns
1
Country
AT
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 440686.

Country allocation

The ICAO 24-bit address 440686 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
OEALU - 25 2026-07-06

Recent flights last 25

DateFlightRouteTakeoffLandingDuration
2026-07-06 OEALU - Jul 6, 15:10 UTCJul 6, 16:45 UTC1h 35m
2026-07-04 OEALU GRZ → GRZ Jul 4, 08:55 UTCJul 4, 09:50 UTC55m
2026-06-28 OEALU - Jun 28, 11:50 UTCJun 28, 12:19 UTC30m
2026-06-28 OEALU - Jun 28, 09:55 UTCJun 28, 11:00 UTC1h 5m
2026-06-28 OEALU - Jun 28, 07:50 UTCJun 28, 09:15 UTC1h 25m
2026-06-26 OEALU - Jun 26, 14:55 UTCJun 26, 15:05 UTC10m
2026-06-25 OEALU - Jun 25, 12:25 UTCJun 25, 12:35 UTC10m
2026-06-23 OEALU - Jun 23, 15:19 UTCJun 23, 16:20 UTC1h 0m
2026-06-23 OEALU - Jun 23, 09:29 UTCJun 23, 09:59 UTC30m
2026-06-22 OEALU - Jun 22, 08:25 UTCJun 22, 09:49 UTC1h 25m
2026-06-21 OEALU - Jun 21, 13:09 UTCJun 21, 13:54 UTC45m
2026-06-21 OEALU - Jun 21, 10:04 UTCJun 21, 10:49 UTC45m
2026-06-21 OEALU - Jun 21, 08:44 UTCJun 21, 09:20 UTC35m
2026-05-30 OEALU GRZ → GRZ May 30, 09:35 UTCMay 30, 10:45 UTC1h 10m
2026-05-28 OEALU - May 28, 09:55 UTCMay 28, 12:00 UTC2h 5m
2026-05-26 OEALU GRZ → GRZ May 26, 08:45 UTCMay 26, 10:34 UTC1h 50m
2026-05-25 OEALU - May 25, 07:25 UTCMay 25, 08:45 UTC1h 20m
2026-05-24 OEALU - May 24, 13:40 UTCMay 24, 14:20 UTC40m
2026-05-24 OEALU - May 24, 12:40 UTCMay 24, 13:05 UTC25m
2026-05-24 OEALU - May 24, 08:15 UTCMay 24, 09:10 UTC55m
2026-05-23 OEALU - May 23, 13:30 UTCMay 23, 14:30 UTC1h 0m
2026-05-23 OEALU - May 23, 08:15 UTCMay 23, 09:00 UTC45m
2026-05-03 OEALU - May 3, 15:35 UTCMay 3, 16:30 UTC55m
2026-05-03 OEALU - May 3, 12:30 UTCMay 3, 13:20 UTC50m
2026-04-24 OEALU GRZ → GRZ Apr 24, 09:55 UTCApr 24, 11:55 UTC2h 0m

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

Mode-S 440686 frequently asked

What is Mode-S code 440686?
440686 is an ICAO 24-bit transponder address. Allocated to Austria. Assigned to OE-ALU.
Where is Mode-S 440686 registered?
Mode-S code 440686 is allocated to Austria (AT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 440686 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 440686, octal 21003206, decimal 4,458,118.
What flights does 440686 operate?
Mode-S 440686 has broadcast 1 distinct callsign, including OEALU.