Apparatus

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sensors Mode-S transponder

44BC8B

ICAO 24-bit transponder address · allocated to Belgium

Currently assigned to OO-ODK · ROBIN DR-400

Hex
44BC8B
Octal
21136213
Decimal
4,504,715
Country
BE
Tail
OO-ODK
Type
DR40
No current signal · last broadcast 17d ago
Flights observed
88
Distinct callsigns
1
Country
BE
Last broadcast
17d ago

Last known position

Most recent position reported by Mode-S 44BC8B.

Country allocation

The ICAO 24-bit address 44BC8B 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
OOODK - 88 2026-06-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-30 OOODK - Jun 30, 17:00 UTCJun 30, 17:25 UTC25m
2026-06-30 OOODK - Jun 30, 13:10 UTCJun 30, 13:25 UTC15m
2026-06-29 OOODK - Jun 29, 18:34 UTCJun 29, 19:05 UTC30m
2026-06-29 OOODK - Jun 29, 17:14 UTCJun 29, 17:45 UTC30m
2026-06-29 OOODK - Jun 29, 14:09 UTCJun 29, 14:39 UTC30m
2026-06-28 OOODK - Jun 28, 16:49 UTCJun 28, 17:34 UTC45m
2026-06-28 OOODK - Jun 28, 13:34 UTCJun 28, 13:45 UTC10m
2026-06-28 OOODK - Jun 28, 12:50 UTCJun 28, 13:00 UTC10m
2026-06-28 OOODK - Jun 28, 09:55 UTCJun 28, 10:19 UTC25m
2026-06-28 OOODK - Jun 28, 07:54 UTCJun 28, 08:34 UTC40m
2026-06-26 OOODK - Jun 26, 15:45 UTCJun 26, 16:09 UTC25m
2026-06-26 OOODK - Jun 26, 09:24 UTCJun 26, 09:50 UTC25m
2026-06-25 OOODK - Jun 25, 16:35 UTCJun 25, 17:20 UTC45m
2026-06-25 OOODK - Jun 25, 15:34 UTCJun 25, 15:54 UTC20m
2026-06-25 OOODK - Jun 25, 13:24 UTCJun 25, 14:50 UTC1h 25m
2026-06-25 OOODK - Jun 25, 10:20 UTCJun 25, 11:50 UTC1h 30m
2026-06-25 OOODK - Jun 25, 07:45 UTCJun 25, 08:04 UTC20m
2026-06-23 OOODK - Jun 23, 16:39 UTCJun 23, 17:25 UTC45m
2026-06-22 OOODK - Jun 22, 12:49 UTCJun 22, 13:39 UTC50m
2026-06-21 OOODK - Jun 21, 16:25 UTCJun 21, 16:49 UTC25m
2026-06-21 OOODK - Jun 21, 13:39 UTCJun 21, 14:05 UTC25m
2026-06-21 OOODK - Jun 21, 08:20 UTCJun 21, 10:49 UTC2h 30m
2026-06-20 OOODK - Jun 20, 11:25 UTCJun 20, 12:30 UTC1h 5m
2026-06-20 OOODK - Jun 20, 07:59 UTCJun 20, 10:09 UTC2h 10m
2026-06-14 OOODK - Jun 14, 11:10 UTCJun 14, 11:45 UTC35m
2026-06-14 OOODK - Jun 14, 09:00 UTCJun 14, 09:20 UTC20m
2026-06-14 OOODK - Jun 14, 07:30 UTCJun 14, 07:50 UTC20m
2026-06-13 OOODK - Jun 13, 14:05 UTCJun 13, 14:35 UTC30m
2026-06-13 OOODK - Jun 13, 12:25 UTCJun 13, 13:10 UTC45m
2026-06-09 OOODK - Jun 9, 13:05 UTCJun 9, 13:35 UTC30m
2026-06-09 OOODK - Jun 9, 10:00 UTCJun 9, 11:15 UTC1h 15m
2026-06-07 OOODK - Jun 7, 16:10 UTCJun 7, 16:25 UTC15m
2026-06-07 OOODK - Jun 7, 14:30 UTCJun 7, 14:40 UTC10m
2026-06-07 OOODK - Jun 7, 11:55 UTCJun 7, 12:05 UTC10m
2026-06-06 OOODK - Jun 6, 07:50 UTCJun 6, 08:55 UTC1h 5m
2026-06-05 OOODK - Jun 5, 14:05 UTCJun 5, 14:35 UTC30m
2026-06-01 OOODK - Jun 1, 15:10 UTCJun 1, 15:45 UTC35m
2026-06-01 OOODK - Jun 1, 10:05 UTCJun 1, 10:25 UTC20m
2026-05-30 OOODK - May 30, 15:00 UTCMay 30, 15:35 UTC35m
2026-05-30 OOODK - May 30, 08:30 UTCMay 30, 08:45 UTC15m
2026-05-29 OOODK - May 29, 19:15 UTCMay 29, 19:35 UTC20m
2026-05-29 OOODK - May 29, 12:10 UTCMay 29, 12:45 UTC35m
2026-05-29 OOODK - May 29, 08:55 UTCMay 29, 09:15 UTC20m
2026-05-28 OOODK - May 28, 16:05 UTCMay 28, 16:35 UTC30m
2026-05-26 OOODK - May 26, 12:10 UTCMay 26, 13:10 UTC1h 0m
2026-05-26 OOODK - May 26, 09:04 UTCMay 26, 10:10 UTC1h 5m
2026-05-25 OOODK - May 25, 14:50 UTCMay 25, 15:25 UTC35m
2026-05-25 OOODK - May 25, 11:50 UTCMay 25, 12:15 UTC25m
2026-05-25 OOODK - May 25, 07:55 UTCMay 25, 08:20 UTC25m
2026-05-24 OOODK - May 24, 12:30 UTCMay 24, 13:25 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 OO-ODK page for operator, model, and routing details .

Mode-S 44BC8B frequently asked

What is Mode-S code 44BC8B?
44BC8B is an ICAO 24-bit transponder address. Allocated to Belgium. Assigned to OO-ODK.
Where is Mode-S 44BC8B registered?
Mode-S code 44BC8B is allocated to Belgium (BE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 44BC8B broadcasting right now?
No active broadcast right now. Last signal was 17d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 44BC8B, octal 21136213, decimal 4,504,715.
What flights does 44BC8B operate?
Mode-S 44BC8B has broadcast 1 distinct callsign, including OOODK.