Apparatus

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sensors Mode-S transponder

44CCC4

ICAO 24-bit transponder address · allocated to Belgium

Currently assigned to OO-SFD · AIRBUS A-330-300

Hex
44CCC4
Octal
21146304
Decimal
4,508,868
Country
BE
Tail
OO-SFD
Type
A333
No current signal · last broadcast 1h ago
Flights observed
78
Distinct callsigns
20
Country
BE
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 44CCC4.

Country allocation

The ICAO 24-bit address 44CCC4 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 20 distinct

Callsign Airline Flights Last seen
BEL8VB - 11 2026-07-12
BEL39G - 9 2026-07-16
BEL12B - 9 2026-07-06
BEL1FF - 6 2026-07-05
BEL38K Brussels Airlines 4 2026-06-30
BEL27A - 4 2026-07-09
BEL1NA - 4 2026-07-17
BEL9902 Brussels Airlines 3 2026-06-02
BEL7MX Brussels Airlines 3 2026-06-13
BEL6ZD - 3 2026-07-12
BEL5RH - 2 2026-07-16
BEL52B Brussels Airlines 2 2026-06-15
BEL3YG - 2 2026-07-17
BEL37K - 2 2026-06-16
BEL24D - 2 2026-06-17
BEL23D - 2 2026-06-17
BEL1CP - 2 2026-06-15
BEL7WR - 1 2026-07-07
BEL5YH Brussels Airlines 1 2026-07-08
BEL4KE - 1 2026-06-27

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 BEL1NA - Jul 17, 08:45 UTCJul 18, 03:00 UTC18h 16m
2026-07-17 BEL3YG - Jul 17, 02:05 UTCJul 17, 03:59 UTC1h 55m
2026-07-16 BEL5RH - Jul 16, 08:45 UTCJul 16, 10:40 UTC1h 55m
2026-07-16 BEL39G - Jul 16, 02:15 UTCJul 16, 04:05 UTC1h 50m
2026-07-15 BEL39G - Jul 15, 21:50 UTCJul 15, 22:05 UTC15m
2026-07-15 BEL39G - Jul 15, 19:45 UTCJul 15, 20:10 UTC25m
2026-07-15 BEL39G - Jul 15, 11:20 UTCJul 15, 13:40 UTC2h 20m
2026-07-12 BEL6ZD - Jul 12, 09:20 UTCJul 13, 03:20 UTC18h 0m
2026-07-12 BEL8VB - Jul 12, 01:05 UTCJul 12, 03:10 UTC2h 5m
2026-07-11 BEL8VB - Jul 11, 20:40 UTCJul 11, 21:00 UTC20m
2026-07-11 BEL379 - Jul 11, 18:40 UTCJul 11, 19:00 UTC20m
2026-07-11 BEL8VB - Jul 11, 10:45 UTCJul 11, 12:50 UTC2h 5m
2026-07-10 BEL21W BRU → BRU Jul 10, 11:25 UTCJul 11, 03:25 UTC16h 0m
2026-07-09 BEL27A BRU → BRU Jul 9, 11:30 UTCJul 10, 04:25 UTC16h 55m
2026-07-08 BEL5YH IAD → BRU Jul 8, 22:00 UTCJul 9, 05:20 UTC7h 20m
2026-07-08 BEL2FU - Jul 8, 09:15 UTCJul 8, 17:10 UTC7h 55m
2026-07-07 BEL7WR - Jul 7, 11:05 UTCJul 8, 03:40 UTC16h 35m
2026-07-06 BEL1NA - Jul 6, 09:20 UTCJul 7, 04:30 UTC19h 10m
2026-07-06 BEL12B - Jul 6, 01:10 UTCJul 6, 03:30 UTC2h 20m
2026-07-05 BEL12B - Jul 5, 21:05 UTCJul 5, 21:20 UTC15m
2026-07-05 BEL12B - Jul 5, 19:05 UTCJul 5, 19:30 UTC25m
2026-07-05 BEL12B - Jul 5, 11:15 UTCJul 5, 13:15 UTC2h 0m
2026-07-05 BEL1FF - Jul 5, 03:25 UTCJul 5, 05:35 UTC2h 10m
2026-07-04 BEL1FF - Jul 4, 08:45 UTCJul 4, 10:45 UTC2h 0m
2026-07-03 BEL1NA - Jul 3, 09:05 UTCJul 4, 04:25 UTC19h 20m
2026-07-03 BEL1NA BRU → BRU Jul 3, 08:50 UTCJul 4, 04:25 UTC19h 35m
2026-07-03 BEL8VB BRU → DLA Jul 3, 01:05 UTCJul 3, 03:10 UTC2h 5m
2026-07-02 BEL8VB BRU → DLA Jul 2, 20:50 UTCJul 2, 21:05 UTC15m
2026-07-02 BEL8VB BRU → DLA Jul 2, 18:45 UTCJul 2, 19:05 UTC20m
2026-07-02 BEL8VB BRU → DLA Jul 2, 10:55 UTCJul 2, 12:35 UTC1h 40m
2026-07-01 BEL6ZD - Jul 1, 09:05 UTCJul 2, 03:20 UTC18h 15m
2026-06-30 BEL38K FIH → BRU Jun 30, 10:50 UTCJul 1, 04:40 UTC17h 50m
2026-06-29 BEL27A - Jun 29, 10:29 UTCJun 30, 04:10 UTC17h 41m
2026-06-28 BEL12B - Jun 28, 12:15 UTCJun 29, 04:00 UTC15h 45m
2026-06-27 BEL4KE - Jun 27, 09:04 UTCJun 28, 04:40 UTC19h 35m
2026-06-26 BEL6ZD - Jun 26, 09:55 UTCJun 27, 04:29 UTC18h 35m
2026-06-24 BEL8VB BRU → DLA Jun 24, 01:09 UTCJun 24, 03:10 UTC2h 0m
2026-06-23 BEL8VB BRU → DLA Jun 23, 18:39 UTCJun 23, 19:00 UTC20m
2026-06-23 BEL8VB BRU → DLA Jun 23, 10:39 UTCJun 23, 12:29 UTC1h 50m
2026-06-22 BEL27A - Jun 22, 10:40 UTCJun 23, 04:25 UTC17h 45m
2026-06-21 BEL38K FIH → BRU Jun 21, 11:15 UTCJun 22, 06:49 UTC19h 35m
2026-06-19 BEL27A - Jun 19, 11:04 UTCJun 20, 04:59 UTC17h 55m
2026-06-18 BEL8VB BRU → DLA Jun 18, 10:50 UTCJun 19, 03:20 UTC16h 29m
2026-06-17 BEL24D - Jun 17, 21:25 UTCJun 18, 02:45 UTC5h 20m
2026-06-17 BEL24D BJL → DSS Jun 17, 19:45 UTCJun 17, 20:05 UTC20m
2026-06-17 BEL23D - Jun 17, 17:35 UTCJun 17, 18:05 UTC30m
2026-06-17 BEL23D BRU → DSS Jun 17, 11:00 UTCJun 17, 16:30 UTC5h 30m
2026-06-16 BEL37K - Jun 16, 10:40 UTCJun 17, 04:15 UTC17h 36m
2026-06-15 BEL52B JFK → BRU Jun 15, 22:40 UTCJun 16, 05:20 UTC6h 40m
2026-06-15 BEL1CP BRU → JFK Jun 15, 09:25 UTCJun 15, 16:59 UTC7h 35m

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

Mode-S 44CCC4 frequently asked

What is Mode-S code 44CCC4?
44CCC4 is an ICAO 24-bit transponder address. Allocated to Belgium. Assigned to OO-SFD.
Where is Mode-S 44CCC4 registered?
Mode-S code 44CCC4 is allocated to Belgium (BE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 44CCC4 broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 44CCC4, octal 21146304, decimal 4,508,868.
What flights does 44CCC4 operate?
Mode-S 44CCC4 has broadcast 20 distinct callsigns, including BEL8VB, BEL39G, BEL12B, BEL1FF, BEL38K.