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sensors Mode-S transponder

44CD75

ICAO 24-bit transponder address · allocated to Belgium

Currently assigned to OO-SKU · ROBIN DR-400

Hex
44CD75
Octal
21146565
Decimal
4,509,045
Country
BE
Tail
OO-SKU
Type
DR40
No current signal · last broadcast 13h ago
Flights observed
207
Distinct callsigns
1
Country
BE
Last broadcast
13h ago

Last known position

Most recent position reported by Mode-S 44CD75.

Country allocation

The ICAO 24-bit address 44CD75 falls within the block assigned to Belgium (BE) by ICAO Annex 10, Volume III. Every aircraft registered in Belgium 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
OOSKU - 207 2026-07-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 OOSKU - Jul 17, 16:24 UTCJul 17, 17:20 UTC55m
2026-07-17 OOSKU - Jul 17, 14:24 UTCJul 17, 15:10 UTC45m
2026-07-17 OOSKU - Jul 17, 12:04 UTCJul 17, 13:05 UTC1h 0m
2026-07-17 OOSKU - Jul 17, 10:25 UTCJul 17, 11:20 UTC55m
2026-07-16 OOSKU - Jul 16, 13:30 UTCJul 16, 13:40 UTC10m
2026-07-16 OOSKU - Jul 16, 09:25 UTCJul 16, 10:40 UTC1h 15m
2026-07-15 OOSKU - Jul 15, 15:50 UTCJul 15, 16:15 UTC25m
2026-07-15 OOSKU - Jul 15, 13:35 UTCJul 15, 14:50 UTC1h 15m
2026-07-15 OOSKU - Jul 15, 11:20 UTCJul 15, 11:35 UTC15m
2026-07-14 OOSKU - Jul 14, 09:50 UTCJul 14, 10:25 UTC35m
2026-07-13 OOSKU - Jul 13, 11:05 UTCJul 13, 11:15 UTC10m
2026-07-13 OOSKU - Jul 13, 07:40 UTCJul 13, 08:40 UTC1h 0m
2026-07-12 OOSKU - Jul 12, 11:45 UTCJul 12, 12:05 UTC20m
2026-07-12 OOSKU - Jul 12, 07:05 UTCJul 12, 07:31 UTC25m
2026-07-11 OOSKU - Jul 11, 15:35 UTCJul 11, 16:10 UTC35m
2026-07-11 OOSKU - Jul 11, 13:05 UTCJul 11, 13:55 UTC50m
2026-07-11 OOSKU - Jul 11, 11:05 UTCJul 11, 12:05 UTC1h 0m
2026-07-11 OOSKU - Jul 11, 09:20 UTCJul 11, 10:05 UTC45m
2026-07-11 OOSKU - Jul 11, 06:25 UTCJul 11, 07:10 UTC45m
2026-07-10 OOSKU - Jul 10, 15:15 UTCJul 10, 15:50 UTC35m
2026-07-10 OOSKU - Jul 10, 13:20 UTCJul 10, 14:00 UTC40m
2026-07-10 OOSKU - Jul 10, 12:15 UTCJul 10, 12:35 UTC20m
2026-07-10 OOSKU - Jul 10, 09:20 UTCJul 10, 09:55 UTC35m
2026-07-10 OOSKU - Jul 10, 07:00 UTCJul 10, 07:35 UTC35m
2026-07-09 OOSKU - Jul 9, 16:55 UTCJul 9, 17:25 UTC30m
2026-07-09 OOSKU - Jul 9, 10:55 UTCJul 9, 13:30 UTC2h 35m
2026-07-09 OOSKU - Jul 9, 09:25 UTCJul 9, 09:45 UTC20m
2026-07-08 OOSKU - Jul 8, 14:40 UTCJul 8, 15:00 UTC20m
2026-07-08 OOSKU - Jul 8, 12:10 UTCJul 8, 12:35 UTC25m
2026-07-08 OOSKU - Jul 8, 10:15 UTCJul 8, 10:50 UTC35m
2026-07-07 OOSKU - Jul 7, 16:40 UTCJul 7, 19:25 UTC2h 45m
2026-07-07 OOSKU - Jul 7, 14:35 UTCJul 7, 15:00 UTC25m
2026-07-07 OOSKU - Jul 7, 13:35 UTCJul 7, 13:50 UTC15m
2026-07-06 OOSKU - Jul 6, 18:20 UTCJul 6, 18:55 UTC35m
2026-07-06 OOSKU - Jul 6, 13:45 UTCJul 6, 16:45 UTC3h 0m
2026-07-06 OOSKU - Jul 6, 08:10 UTCJul 6, 08:30 UTC20m
2026-07-05 OOSKU - Jul 5, 17:10 UTCJul 5, 17:35 UTC25m
2026-07-05 OOSKU - Jul 5, 15:10 UTCJul 5, 15:45 UTC35m
2026-07-05 OOSKU - Jul 5, 13:10 UTCJul 5, 14:00 UTC50m
2026-07-05 OOSKU - Jul 5, 07:00 UTCJul 5, 07:50 UTC50m
2026-07-04 OOSKU - Jul 4, 17:25 UTCJul 4, 18:30 UTC1h 5m
2026-07-04 OOSKU - Jul 4, 06:50 UTCJul 4, 08:20 UTC1h 30m
2026-07-03 OOSKU - Jul 3, 18:05 UTCJul 3, 18:45 UTC40m
2026-07-03 OOSKU - Jul 3, 17:15 UTCJul 3, 17:35 UTC20m
2026-07-03 OOSKU - Jul 3, 14:00 UTCJul 3, 14:45 UTC45m
2026-07-03 OOSKU - Jul 3, 11:40 UTCJul 3, 13:15 UTC1h 35m
2026-07-03 OOSKU - Jul 3, 10:05 UTCJul 3, 10:25 UTC20m
2026-07-03 OOSKU - Jul 3, 08:45 UTCJul 3, 09:10 UTC25m
2026-07-02 OOSKU - Jul 2, 16:00 UTCJul 2, 16:20 UTC20m
2026-07-02 OOSKU - Jul 2, 14:30 UTCJul 2, 14:55 UTC25m

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 OO-SKU page for operator, model, and routing details .

Mode-S 44CD75 frequently asked

What is Mode-S code 44CD75?
44CD75 is an ICAO 24-bit transponder address. Allocated to Belgium. Assigned to OO-SKU.
Where is Mode-S 44CD75 registered?
Mode-S code 44CD75 is allocated to Belgium (BE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 44CD75 broadcasting right now?
No active broadcast right now. Last signal was 13h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 44CD75, octal 21146565, decimal 4,509,045.
What flights does 44CD75 operate?
Mode-S 44CD75 has broadcast 1 distinct callsign, including OOSKU.