Apparatus

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sensors Mode-S transponder

440A4A

ICAO 24-bit transponder address · allocated to Austria

Currently assigned to OE-FDV · SHORT Skyvan

Hex
440A4A
Octal
21005112
Decimal
4,459,082
Country
AT
Tail
OE-FDV
Type
SC7
No current signal · last broadcast 18h ago
Flights observed
217
Distinct callsigns
2
Country
AT
Last broadcast
18h ago

Last known position

Most recent position reported by Mode-S 440A4A.

Country allocation

The ICAO 24-bit address 440A4A 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 2 distinct

Callsign Airline Flights Last seen
OEFDV - 207 2026-07-08
SHERPA4 - 10 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 SHERPA4 - Jul 13, 11:45 UTCJul 13, 13:00 UTC1h 15m
2026-07-13 SHERPA4 - Jul 13, 08:45 UTCJul 13, 10:00 UTC1h 15m
2026-07-13 SHERPA4 - Jul 13, 06:45 UTCJul 13, 08:05 UTC1h 20m
2026-07-10 SHERPA4 - Jul 10, 08:35 UTCJul 10, 09:20 UTC45m
2026-07-10 SHERPA4 - Jul 10, 06:40 UTCJul 10, 07:55 UTC1h 15m
2026-07-09 SHERPA4 - Jul 9, 11:20 UTCJul 9, 12:35 UTC1h 15m
2026-07-09 SHERPA4 - Jul 9, 06:45 UTCJul 9, 09:45 UTC3h 0m
2026-07-08 SHERPA4 - Jul 8, 13:30 UTCJul 8, 14:10 UTC40m
2026-07-08 SHERPA4 - Jul 8, 11:15 UTCJul 8, 11:30 UTC15m
2026-07-08 SHERPA4 - Jul 8, 08:40 UTCJul 8, 09:45 UTC1h 5m
2026-07-08 OEFDV - Jul 8, 05:40 UTCJul 8, 08:05 UTC2h 25m
2026-07-07 OEFDV - Jul 7, 07:25 UTCJul 7, 07:40 UTC15m
2026-07-04 OEFDV - Jul 4, 13:40 UTCJul 4, 16:40 UTC3h 0m
2026-07-04 OEFDV - Jul 4, 10:45 UTCJul 4, 11:10 UTC25m
2026-07-04 OEFDV - Jul 4, 10:15 UTCJul 4, 10:40 UTC25m
2026-07-03 OEFDV - Jul 3, 09:20 UTCJul 3, 09:45 UTC25m
2026-07-03 OEFDV - Jul 3, 08:00 UTCJul 3, 08:20 UTC20m
2026-07-03 OEFDV - Jul 3, 06:35 UTCJul 3, 06:55 UTC20m
2026-07-02 OEFDV - Jul 2, 11:40 UTCJul 2, 12:10 UTC30m
2026-07-02 OEFDV - Jul 2, 07:35 UTCJul 2, 08:40 UTC1h 5m
2026-07-02 OEFDV - Jul 2, 07:05 UTCJul 2, 07:25 UTC20m
2026-07-01 OEFDV - Jul 1, 17:25 UTCJul 1, 17:45 UTC20m
2026-07-01 OEFDV - Jul 1, 16:35 UTCJul 1, 16:50 UTC15m
2026-07-01 OEFDV - Jul 1, 14:55 UTCJul 1, 15:15 UTC20m
2026-07-01 OEFDV - Jul 1, 13:40 UTCJul 1, 14:00 UTC20m
2026-07-01 OEFDV - Jul 1, 12:15 UTCJul 1, 12:35 UTC20m
2026-07-01 OEFDV - Jul 1, 10:35 UTCJul 1, 11:10 UTC35m
2026-07-01 OEFDV - Jul 1, 08:25 UTCJul 1, 08:45 UTC20m
2026-07-01 OEFDV - Jul 1, 07:50 UTCJul 1, 08:20 UTC30m
2026-06-30 OEFDV - Jun 30, 17:20 UTCJun 30, 17:25 UTC5m
2026-06-30 OEFDV - Jun 30, 16:55 UTCJun 30, 17:05 UTC10m
2026-06-30 OEFDV - Jun 30, 16:00 UTCJun 30, 16:15 UTC15m
2026-06-30 OEFDV - Jun 30, 14:20 UTCJun 30, 14:40 UTC20m
2026-06-30 OEFDV - Jun 30, 12:25 UTCJun 30, 12:40 UTC15m
2026-06-30 OEFDV - Jun 30, 11:55 UTCJun 30, 12:20 UTC25m
2026-06-30 OEFDV - Jun 30, 11:15 UTCJun 30, 11:45 UTC30m
2026-06-30 OEFDV - Jun 30, 09:05 UTCJun 30, 09:25 UTC20m
2026-06-30 OEFDV - Jun 30, 08:35 UTCJun 30, 09:00 UTC25m
2026-06-30 OEFDV - Jun 30, 08:00 UTCJun 30, 08:30 UTC30m
2026-06-29 OEFDV - Jun 29, 16:50 UTCJun 29, 17:05 UTC15m
2026-06-29 OEFDV - Jun 29, 16:10 UTCJun 29, 16:25 UTC15m
2026-06-29 OEFDV - Jun 29, 14:39 UTCJun 29, 14:54 UTC15m
2026-06-29 OEFDV - Jun 29, 13:34 UTCJun 29, 13:44 UTC10m
2026-06-29 OEFDV - Jun 29, 11:55 UTCJun 29, 12:29 UTC35m
2026-06-29 OEFDV - Jun 29, 11:14 UTCJun 29, 11:50 UTC35m
2026-06-29 OEFDV - Jun 29, 08:54 UTCJun 29, 09:29 UTC35m
2026-06-29 OEFDV - Jun 29, 08:14 UTCJun 29, 08:50 UTC35m
2026-06-26 OEFDV - Jun 26, 09:00 UTCJun 26, 09:14 UTC15m
2026-06-26 OEFDV - Jun 26, 07:50 UTCJun 26, 08:10 UTC20m
2026-06-26 OEFDV - Jun 26, 06:45 UTCJun 26, 07:05 UTC20m

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

Mode-S 440A4A frequently asked

What is Mode-S code 440A4A?
440A4A is an ICAO 24-bit transponder address. Allocated to Austria. Assigned to OE-FDV.
Where is Mode-S 440A4A registered?
Mode-S code 440A4A is allocated to Austria (AT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 440A4A broadcasting right now?
No active broadcast right now. Last signal was 18h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 440A4A, octal 21005112, decimal 4,459,082.
What flights does 440A4A operate?
Mode-S 440A4A has broadcast 2 distinct callsigns, including OEFDV, SHERPA4.