Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

440509

ICAO 24-bit transponder address · allocated to Austria

Currently assigned to OE-9438 · DIAMOND H-36 Dimona

Hex
440509
Octal
21002411
Decimal
4,457,737
Country
AT
Tail
OE-9438
Type
DIMO
No current signal · last broadcast Jul 25, 15:05 UTC
Flights observed
104
Distinct callsigns
1
Country
AT
Last broadcast
Jul 25, 15:05 UTC

Last known position

Most recent position reported by Mode-S 440509.

Country allocation

The ICAO 24-bit address 440509 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
OE9438 - 104 2026-07-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 OE9438 HOH → HOH Jul 25, 14:25 UTCJul 25, 15:05 UTC40m
2026-07-25 OE9438 - Jul 25, 11:40 UTCJul 25, 13:20 UTC1h 40m
2026-07-24 OE9438 - Jul 24, 16:15 UTCJul 24, 16:25 UTC10m
2026-07-24 OE9438 - Jul 24, 09:45 UTCJul 24, 10:40 UTC55m
2026-07-24 OE9438 - Jul 24, 07:45 UTCJul 24, 08:40 UTC55m
2026-07-23 OE9438 - Jul 23, 14:05 UTCJul 23, 15:05 UTC1h 0m
2026-07-22 OE9438 - Jul 22, 16:25 UTCJul 22, 17:05 UTC40m
2026-07-22 OE9438 - Jul 22, 12:05 UTCJul 22, 13:05 UTC1h 0m
2026-07-21 OE9438 - Jul 21, 17:35 UTCJul 21, 18:00 UTC25m
2026-07-21 OE9438 - Jul 21, 16:15 UTCJul 21, 16:50 UTC35m
2026-07-20 OE9438 - Jul 20, 14:50 UTCJul 20, 17:10 UTC2h 20m
2026-07-16 OE9438 - Jul 16, 10:00 UTCJul 16, 12:09 UTC2h 10m
2026-07-16 OE9438 - Jul 16, 06:15 UTCJul 16, 07:50 UTC1h 35m
2026-07-13 OE9438 HOH → HOH Jul 13, 07:35 UTCJul 13, 08:35 UTC1h 0m
2026-07-12 OE9438 - Jul 12, 08:20 UTCJul 12, 10:20 UTC2h 0m
2026-07-12 OE9438 - Jul 12, 07:25 UTCJul 12, 07:40 UTC15m
2026-07-11 OE9438 - Jul 11, 14:05 UTCJul 11, 16:55 UTC2h 50m
2026-07-10 OE9438 HOH → HOH Jul 10, 07:25 UTCJul 10, 08:00 UTC35m
2026-07-09 OE9438 HOH → HOH Jul 9, 08:35 UTCJul 9, 09:25 UTC50m
2026-07-07 OE9438 - Jul 7, 12:20 UTCJul 7, 14:00 UTC1h 40m
2026-07-06 OE9438 HOH → HOH Jul 6, 09:50 UTCJul 6, 10:50 UTC1h 0m
2026-06-28 OE9438 HOH → HOH Jun 28, 09:20 UTCJun 28, 09:50 UTC30m
2026-06-28 OE9438 - Jun 28, 06:49 UTCJun 28, 08:00 UTC1h 10m
2026-06-24 OE9438 - Jun 24, 08:14 UTCJun 24, 10:30 UTC2h 15m
2026-06-22 OE9438 - Jun 22, 10:19 UTCJun 22, 10:40 UTC20m
2026-06-22 OE9438 - Jun 22, 07:14 UTCJun 22, 07:54 UTC40m
2026-06-21 OE9438 - Jun 21, 06:29 UTCJun 21, 07:04 UTC35m
2026-06-18 OE9438 - Jun 18, 10:35 UTCJun 18, 11:05 UTC30m
2026-06-18 OE9438 - Jun 18, 08:15 UTCJun 18, 08:45 UTC30m
2026-06-17 OE9438 HOH → HOH Jun 17, 12:45 UTCJun 17, 13:20 UTC35m
2026-06-16 OE9438 HOH → HOH Jun 16, 13:04 UTCJun 16, 14:05 UTC1h 0m
2026-06-16 OE9438 - Jun 16, 07:34 UTCJun 16, 08:39 UTC1h 5m
2026-06-14 OE9438 - Jun 14, 08:20 UTCJun 14, 09:15 UTC55m
2026-06-13 OE9438 - Jun 13, 14:00 UTCJun 13, 15:30 UTC1h 30m
2026-06-13 OE9438 - Jun 13, 12:20 UTCJun 13, 12:50 UTC30m
2026-06-07 OE9438 - Jun 7, 08:25 UTCJun 7, 09:00 UTC35m
2026-06-05 OE9438 - Jun 5, 14:45 UTCJun 5, 15:30 UTC45m
2026-06-04 OE9438 - Jun 4, 09:45 UTCJun 4, 10:10 UTC25m
2026-06-04 OE9438 - Jun 4, 08:35 UTCJun 4, 08:55 UTC20m
2026-06-02 OE9438 - Jun 2, 11:50 UTCJun 2, 12:25 UTC35m
2026-06-02 OE9438 - Jun 2, 10:25 UTCJun 2, 10:50 UTC25m
2026-05-31 OE9438 - May 31, 08:25 UTCMay 31, 10:30 UTC2h 5m
2026-05-30 OE9438 - May 30, 08:05 UTCMay 30, 10:50 UTC2h 45m
2026-05-29 OE9438 - May 29, 12:15 UTCMay 29, 12:25 UTC10m
2026-05-29 OE9438 - May 29, 09:10 UTCMay 29, 10:00 UTC50m
2026-05-29 OE9438 - May 29, 07:30 UTCMay 29, 08:05 UTC35m
2026-05-28 OE9438 - May 28, 14:00 UTCMay 28, 14:30 UTC30m
2026-05-28 OE9438 - May 28, 10:30 UTCMay 28, 10:50 UTC20m
2026-05-28 OE9438 - May 28, 07:40 UTCMay 28, 08:45 UTC1h 5m
2026-05-27 OE9438 - May 27, 17:00 UTCMay 27, 17:55 UTC55m

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-9438 page for operator, model, and routing details .

Mode-S 440509 frequently asked

What is Mode-S code 440509?
440509 is an ICAO 24-bit transponder address. Allocated to Austria. Assigned to OE-9438.
Where is Mode-S 440509 registered?
Mode-S code 440509 is allocated to Austria (AT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 440509 broadcasting right now?
No active broadcast right now. Last signal was Jul 25, 15:05 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 440509, octal 21002411, decimal 4,457,737.
What flights does 440509 operate?
Mode-S 440509 has broadcast 1 distinct callsign, including OE9438.