Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

4401D9

ICAO 24-bit transponder address · allocated to Austria

Currently assigned to OE-LQO · AIRBUS A-319 · operated by Heli Austria

Hex
4401D9
Octal
21000731
Decimal
4,456,921
Country
AT
Tail
OE-LQO
Type
A319
No current signal · last broadcast Jul 24, 16:20 UTC
Flights observed
268
Distinct callsigns
1
Country
AT
Last broadcast
Jul 24, 16:20 UTC

Last known position

Most recent position reported by Mode-S 4401D9.

Country allocation

The ICAO 24-bit address 4401D9 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
OEXMC - 268 2026-07-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-24 OEXMC - Jul 24, 14:30 UTCJul 24, 16:20 UTC1h 50m
2026-07-24 OEXMC - Jul 24, 10:55 UTCJul 24, 11:45 UTC50m
2026-07-24 OEXMC - Jul 24, 08:55 UTCJul 24, 09:40 UTC45m
2026-07-24 OEXMC - Jul 24, 07:55 UTCJul 24, 08:15 UTC20m
2026-07-24 OEXMC - Jul 24, 07:20 UTCJul 24, 07:45 UTC25m
2026-07-23 OEXMC - Jul 23, 10:25 UTCJul 23, 11:10 UTC45m
2026-07-23 OEXMC - Jul 23, 07:25 UTCJul 23, 08:15 UTC50m
2026-07-22 OEXMC - Jul 22, 16:50 UTCJul 22, 17:50 UTC1h 0m
2026-07-22 OEXMC - Jul 22, 14:15 UTCJul 22, 15:50 UTC1h 35m
2026-07-22 OEXMC - Jul 22, 12:55 UTCJul 22, 13:15 UTC20m
2026-07-21 OEXMC - Jul 21, 16:15 UTCJul 21, 16:55 UTC40m
2026-07-21 OEXMC - Jul 21, 15:05 UTCJul 21, 15:40 UTC35m
2026-07-21 OEXMC - Jul 21, 11:35 UTCJul 21, 12:50 UTC1h 15m
2026-07-21 OEXMC - Jul 21, 08:10 UTCJul 21, 09:45 UTC1h 35m
2026-07-20 OEXMC - Jul 20, 16:35 UTCJul 20, 16:45 UTC10m
2026-07-20 OEXMC - Jul 20, 15:25 UTCJul 20, 16:30 UTC1h 5m
2026-07-20 OEXMC - Jul 20, 13:45 UTCJul 20, 14:20 UTC35m
2026-07-20 OEXMC - Jul 20, 11:10 UTCJul 20, 12:40 UTC1h 30m
2026-07-20 OEXMC - Jul 20, 07:45 UTCJul 20, 08:25 UTC40m
2026-07-20 OEXMC - Jul 20, 07:25 UTCJul 20, 07:40 UTC15m
2026-07-15 OEXMC - Jul 15, 12:35 UTCJul 15, 13:15 UTC40m
2026-07-15 OEXMC - Jul 15, 11:25 UTCJul 15, 12:00 UTC35m
2026-07-14 OEXMC - Jul 14, 07:20 UTCJul 14, 10:05 UTC2h 45m
2026-07-13 OEXMC - Jul 13, 13:25 UTCJul 13, 14:25 UTC1h 0m
2026-07-13 OEXMC - Jul 13, 11:30 UTCJul 13, 12:15 UTC45m
2026-07-13 OEXMC - Jul 13, 11:05 UTCJul 13, 11:25 UTC20m
2026-07-13 OEXMC - Jul 13, 08:55 UTCJul 13, 09:20 UTC25m
2026-07-13 OEXMC - Jul 13, 07:35 UTCJul 13, 08:15 UTC40m
2026-07-11 OEXMC - Jul 11, 10:35 UTCJul 11, 11:10 UTC35m
2026-07-11 OEXMC - Jul 11, 08:25 UTCJul 11, 08:50 UTC25m
2026-07-11 OEXMC - Jul 11, 07:15 UTCJul 11, 07:40 UTC25m
2026-07-10 OEXMC - Jul 10, 16:05 UTCJul 10, 16:30 UTC25m
2026-07-10 OEXMC - Jul 10, 13:30 UTCJul 10, 15:05 UTC1h 35m
2026-07-10 OEXMC - Jul 10, 11:30 UTCJul 10, 12:25 UTC55m
2026-07-10 OEXMC - Jul 10, 09:15 UTCJul 10, 10:00 UTC45m
2026-07-10 OEXMC - Jul 10, 07:25 UTCJul 10, 08:20 UTC55m
2026-07-09 OEXMC - Jul 9, 14:05 UTCJul 9, 15:00 UTC55m
2026-07-09 OEXMC - Jul 9, 11:15 UTCJul 9, 12:50 UTC1h 35m
2026-07-09 OEXMC - Jul 9, 09:40 UTCJul 9, 10:20 UTC40m
2026-07-09 OEXMC - Jul 9, 08:45 UTCJul 9, 09:10 UTC25m
2026-07-09 OEXMC - Jul 9, 07:30 UTCJul 9, 07:50 UTC20m
2026-07-08 OEXMC - Jul 8, 12:55 UTCJul 8, 13:15 UTC20m
2026-07-07 OEXMC - Jul 7, 08:45 UTCJul 7, 09:10 UTC25m
2026-07-07 OEXMC - Jul 7, 07:10 UTCJul 7, 08:05 UTC55m
2026-07-06 OEXMC - Jul 6, 11:35 UTCJul 6, 12:15 UTC40m
2026-07-06 OEXMC - Jul 6, 07:05 UTCJul 6, 07:55 UTC50m
2026-07-03 OEXMC - Jul 3, 11:15 UTCJul 3, 12:00 UTC45m
2026-07-03 OEXMC - Jul 3, 08:10 UTCJul 3, 09:50 UTC1h 40m
2026-07-02 OEXMC - Jul 2, 12:10 UTCJul 2, 13:05 UTC55m
2026-07-02 OEXMC - Jul 2, 11:00 UTCJul 2, 11:20 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-LQO page for operator, model, and routing details .

Mode-S 4401D9 frequently asked

What is Mode-S code 4401D9?
4401D9 is an ICAO 24-bit transponder address. Allocated to Austria. Assigned to OE-LQO.
Where is Mode-S 4401D9 registered?
Mode-S code 4401D9 is allocated to Austria (AT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4401D9 broadcasting right now?
No active broadcast right now. Last signal was Jul 24, 16:20 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4401D9, octal 21000731, decimal 4,456,921.
What flights does 4401D9 operate?
Mode-S 4401D9 has broadcast 1 distinct callsign, including OEXMC.