Apparatus

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sensors Mode-S transponder

44CE77

ICAO 24-bit transponder address · allocated to Belgium

Currently assigned to OO-SSW · AIRBUS A-319

Hex
44CE77
Octal
21147167
Decimal
4,509,303
Country
BE
Tail
OO-SSW
Type
A319
No current signal · last broadcast 5h ago
Flights observed
463
Distinct callsigns
20
Country
BE
Last broadcast
5h ago

Last known position

Most recent position reported by Mode-S 44CE77.

Country allocation

The ICAO 24-bit address 44CE77 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
BEL8ZB - 9 2026-07-13
BEL5WE Brussels Airlines 9 2026-06-09
BEL4LZ - 9 2026-07-13
BEL9PY Brussels Airlines 8 2026-05-26
BEL5UB - 8 2026-07-02
BEL3LZ Brussels Airlines 8 2026-06-09
BEL9CJ - 7 2026-07-14
BEL8UK - 7 2026-07-14
BEL8MP - 7 2026-07-02
BEL2SJ - 7 2026-06-25
BEL19V - 7 2026-06-26
BEL8YE - 6 2026-06-28
BEL7AM - 6 2026-06-20
BEL6WA Brussels Airlines 6 2026-06-05
BEL5XD Brussels Airlines 6 2026-05-26
BEL5HW - 6 2026-06-23
BEL5BJ - 6 2026-07-14
BEL2JY - 6 2026-06-23
BEL9SW - 5 2026-07-14
BEL9HZ - 5 2026-06-27

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 BEL5BJ BRU → MAN Jul 14, 19:55 UTCJul 14, 20:50 UTC55m
2026-07-14 BEL9CJ FRA → BRU Jul 14, 17:50 UTCJul 14, 18:40 UTC50m
2026-07-14 BEL8UK - Jul 14, 15:55 UTCJul 14, 16:25 UTC30m
2026-07-14 BEL9SW - Jul 14, 13:20 UTCJul 14, 14:20 UTC1h 0m
2026-07-14 BEL7LF BRU → MUC Jul 14, 11:10 UTCJul 14, 12:10 UTC1h 0m
2026-07-14 BEL1PA - Jul 14, 08:05 UTCJul 14, 09:50 UTC1h 45m
2026-07-14 BEL7JV BRU → VLC Jul 14, 04:55 UTCJul 14, 06:55 UTC2h 0m
2026-07-13 BEL5PR FRA → BRU Jul 13, 20:05 UTCJul 13, 20:40 UTC35m
2026-07-13 BEL2LG BRU → FRA Jul 13, 17:35 UTCJul 13, 18:10 UTC35m
2026-07-13 BEL2WM - Jul 13, 14:25 UTCJul 13, 15:50 UTC1h 25m
2026-07-13 BEL5NZ - Jul 13, 12:05 UTCJul 13, 13:20 UTC1h 15m
2026-07-13 BEL4LZ FRA → BRU Jul 13, 09:05 UTCJul 13, 09:45 UTC40m
2026-07-13 BEL8ZB BRU → FRA Jul 13, 07:01 UTCJul 13, 07:40 UTC40m
2026-07-12 BEL5HH IBZ → BRU Jul 12, 08:01 UTCJul 12, 09:50 UTC1h 50m
2026-07-12 BEL6JW BRU → IBZ Jul 12, 04:15 UTCJul 12, 06:15 UTC2h 0m
2026-07-11 BEL7JN BCN → BRU Jul 11, 20:00 UTCJul 11, 21:40 UTC1h 40m
2026-07-11 BEL3FJ BRU → BCN Jul 11, 17:05 UTCJul 11, 18:50 UTC1h 45m
2026-07-11 BEL5EF - Jul 11, 14:45 UTCJul 11, 15:20 UTC35m
2026-07-11 BEL2SR BRU → FRA Jul 11, 12:45 UTCJul 11, 13:15 UTC30m
2026-07-11 BEL5MQ - Jul 11, 09:45 UTCJul 11, 10:40 UTC55m
2026-07-11 BEL7GZ BRU → HAM Jul 11, 08:01 UTCJul 11, 08:50 UTC50m
2026-07-10 BEL5KV - Jul 10, 17:05 UTCJul 10, 19:20 UTC2h 15m
2026-07-10 BEL3MN - Jul 10, 13:35 UTCJul 10, 15:50 UTC2h 15m
2026-07-10 BEL4KY FRA → BRU Jul 10, 11:40 UTCJul 10, 12:15 UTC35m
2026-07-10 BEL3DQ BRU → FRA Jul 10, 08:45 UTCJul 10, 09:20 UTC35m
2026-07-10 BEL1PD - Jul 10, 05:05 UTCJul 10, 06:25 UTC1h 20m
2026-07-09 BEL9WB - Jul 9, 19:25 UTCJul 9, 20:45 UTC1h 20m
2026-07-09 BEL93B - Jul 9, 17:10 UTCJul 9, 17:55 UTC45m
2026-07-09 BEL6RA BRU → LHR Jul 9, 15:10 UTCJul 9, 16:00 UTC50m
2026-07-05 BEL9CJ FRA → BRU Jul 5, 17:40 UTCJul 5, 18:20 UTC40m
2026-07-05 BEL8UK BRU → FRA Jul 5, 15:55 UTCJul 5, 16:30 UTC35m
2026-07-05 BEL9SW MUC → BRU Jul 5, 13:50 UTCJul 5, 14:45 UTC55m
2026-07-05 BEL7LF - Jul 5, 11:25 UTCJul 5, 12:20 UTC55m
2026-07-05 BEL5HH - Jul 5, 07:45 UTCJul 5, 09:40 UTC1h 55m
2026-07-05 BEL6JW - Jul 5, 04:40 UTCJul 5, 06:45 UTC2h 5m
2026-07-04 BEL1PA - Jul 4, 16:35 UTCJul 4, 18:30 UTC1h 55m
2026-07-04 BEL7JV BRU → VLC Jul 4, 13:40 UTCJul 4, 15:30 UTC1h 50m
2026-07-04 BEL9902 TLS → BRU Jul 4, 09:05 UTCJul 4, 10:20 UTC1h 15m
2026-07-02 BEL29D - Jul 2, 20:05 UTCJul 2, 21:25 UTC1h 20m
2026-07-02 BEL7TA - Jul 2, 16:40 UTCJul 2, 18:10 UTC1h 30m
2026-07-02 BEL4DQ BRU → GOT Jul 2, 14:10 UTCJul 2, 15:30 UTC1h 20m
2026-07-02 BEL8MP MAN → BRU Jul 2, 10:35 UTCJul 2, 11:30 UTC55m
2026-07-02 BEL5UB BRU → MAN Jul 2, 08:20 UTCJul 2, 09:20 UTC1h 0m
2026-07-02 BEL8HW - Jul 2, 05:30 UTCJul 2, 06:55 UTC1h 25m
2026-07-01 BEL3UC - Jul 1, 19:45 UTCJul 1, 21:10 UTC1h 25m
2026-07-01 BEL2UE - Jul 1, 16:10 UTCJul 1, 18:05 UTC1h 55m
2026-07-01 BEL3KK BRU → MAD Jul 1, 12:40 UTCJul 1, 14:30 UTC1h 50m
2026-07-01 BEL9HR - Jul 1, 10:00 UTCJul 1, 10:55 UTC55m
2026-07-01 BEL1UF - Jul 1, 07:40 UTCJul 1, 08:40 UTC1h 0m
2026-07-01 BEL1UF - Jul 1, 04:50 UTCJul 1, 05:45 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-SSW page for operator, model, and routing details .

Mode-S 44CE77 frequently asked

What is Mode-S code 44CE77?
44CE77 is an ICAO 24-bit transponder address. Allocated to Belgium. Assigned to OO-SSW.
Where is Mode-S 44CE77 registered?
Mode-S code 44CE77 is allocated to Belgium (BE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 44CE77 broadcasting right now?
No active broadcast right now. Last signal was 5h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 44CE77, octal 21147167, decimal 4,509,303.
What flights does 44CE77 operate?
Mode-S 44CE77 has broadcast 20 distinct callsigns, including BEL8ZB, BEL5WE, BEL4LZ, BEL9PY, BEL5UB.