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 2h ago
Flights observed
240
Distinct callsigns
20
Country
BE
Last broadcast
2h 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
BEL9PY Brussels Airlines 8 2026-05-26
BEL8ZB Brussels Airlines 7 2026-05-30
BEL5WE Brussels Airlines 7 2026-05-28
BEL4LZ Brussels Airlines 7 2026-05-30
BEL3LZ Brussels Airlines 7 2026-05-28
BEL5XD Brussels Airlines 6 2026-05-26
BEL8YE Brussels Airlines 5 2026-05-30
BEL8MN Brussels Airlines 5 2026-05-29
BEL7WA Brussels Airlines 5 2026-05-29
BEL6WA Brussels Airlines 5 2026-05-27
BEL7JU Brussels Airlines 4 2026-05-26
BEL7AM Brussels Airlines 4 2026-05-23
BEL2SJ Brussels Airlines 4 2026-05-24
BEL1ZK Brussels Airlines 4 2026-05-29
BEL19V Brussels Airlines 4 2026-05-25
BEL9DN Brussels Airlines 3 2026-05-19
BEL9BP Brussels Airlines 3 2026-05-25
BEL8QB Brussels Airlines 3 2026-05-19
BEL8MP Brussels Airlines 3 2026-05-20
BEL5UB Brussels Airlines 3 2026-05-20

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-30 BEL9KT BRU → BHX May 30, 13:05 UTCMay 30, 14:45 UTC1h 40m
2026-05-30 BEL4LZ FRA → BRU May 30, 11:05 UTCMay 30, 11:40 UTC35m
2026-05-30 BEL8ZB BRU → FRA May 30, 08:55 UTCMay 30, 09:40 UTC45m
2026-05-30 BEL8YE BER → BRU May 30, 05:10 UTCMay 30, 06:15 UTC1h 5m
2026-05-29 BEL1ZK BRU → BER May 29, 20:25 UTCMay 29, 21:25 UTC1h 0m
2026-05-29 BEL8MN CPH → BRU May 29, 17:10 UTCMay 29, 18:25 UTC1h 15m
2026-05-29 BEL7WA BRU → CPH May 29, 14:30 UTCMay 29, 15:45 UTC1h 15m
2026-05-29 BEL4UG TLS → BRU May 29, 10:20 UTCMay 29, 11:45 UTC1h 25m
2026-05-29 BEL8WD BRU → TLS May 29, 07:55 UTCMay 29, 09:15 UTC1h 20m
2026-05-29 BEL8YE BER → BRU May 29, 05:05 UTCMay 29, 06:05 UTC1h 0m
2026-05-28 BEL1ZK BRU → BER May 28, 19:00 UTCMay 28, 20:10 UTC1h 10m
2026-05-28 BEL7TA GOT → BRU May 28, 16:40 UTCMay 28, 18:05 UTC1h 25m
2026-05-28 BEL4DQ BRU → GOT May 28, 14:10 UTCMay 28, 15:35 UTC1h 25m
2026-05-28 BEL3LZ LIN → BRU May 28, 11:25 UTCMay 28, 12:40 UTC1h 15m
2026-05-28 BEL5WE BRU → LIN May 28, 09:10 UTCMay 28, 10:15 UTC1h 5m
2026-05-28 BEL5HW BER → BRU May 28, 06:35 UTCMay 28, 07:45 UTC1h 10m
2026-05-28 BEL2JY BRU → BER May 28, 04:40 UTCMay 28, 05:45 UTC1h 5m
2026-05-27 BEL56L MXP → BRU May 27, 20:05 UTCMay 27, 21:05 UTC1h 0m
2026-05-27 BEL8RD BRU → MXP May 27, 17:35 UTCMay 27, 18:50 UTC1h 15m
2026-05-27 BEL6VF NCE → BRU May 27, 14:45 UTCMay 27, 16:10 UTC1h 25m
2026-05-27 BEL8NY BRU → NCE May 27, 12:15 UTCMay 27, 13:35 UTC1h 20m
2026-05-27 BEL4NK BER → BRU May 27, 10:05 UTCMay 27, 11:10 UTC1h 5m
2026-05-27 BEL8CE BRU → BER May 27, 08:00 UTCMay 27, 09:10 UTC1h 10m
2026-05-27 BEL6WA BUD → BRU May 27, 04:59 UTCMay 27, 06:55 UTC1h 55m
2026-05-26 BEL7JU BRU → BUD May 26, 19:15 UTCMay 26, 21:00 UTC1h 45m
2026-05-26 BEL9PY WAW → BRU May 26, 16:20 UTCMay 26, 17:59 UTC1h 40m
2026-05-26 BEL5XD BRU → WAW May 26, 13:34 UTCMay 26, 15:09 UTC1h 35m
2026-05-26 BEL5HW BER → BRU May 26, 06:39 UTCMay 26, 07:40 UTC1h 0m
2026-05-26 BEL2JY BRU → BER May 26, 04:30 UTCMay 26, 05:40 UTC1h 10m
2026-05-25 BEL8KG ZRH → BRU May 25, 19:05 UTCMay 25, 19:54 UTC50m
2026-05-25 BEL5LY BRU → ZRH May 25, 16:25 UTCMay 25, 17:15 UTC50m
2026-05-25 BEL9BP MUC → BRU May 25, 14:15 UTCMay 25, 15:15 UTC1h 0m
2026-05-25 BEL2PN BRU → SPU May 25, 12:00 UTCMay 25, 12:55 UTC55m
2026-05-25 BEL4NK BER → BRU May 25, 10:00 UTCMay 25, 11:05 UTC1h 5m
2026-05-25 BEL8CE BRU → BER May 25, 08:00 UTCMay 25, 09:05 UTC1h 5m
2026-05-25 BEL19V VCE → BRU May 25, 05:15 UTCMay 25, 06:35 UTC1h 20m
2026-05-24 BEL2SJ BRU → VCE May 24, 19:45 UTCMay 24, 21:05 UTC1h 20m
2026-05-24 BEL9CJ BRU → NDR May 24, 17:50 UTCMay 24, 18:25 UTC35m
2026-05-24 BEL8UK BRU → FRA May 24, 15:45 UTCMay 24, 16:25 UTC40m
2026-05-24 BEL9SW MUC → BRU May 24, 13:10 UTCMay 24, 14:10 UTC1h 0m
2026-05-24 BEL7LF BRU → MUC May 24, 10:55 UTCMay 24, 12:00 UTC1h 5m
2026-05-24 BEL5HH IBZ → BRU May 24, 07:20 UTCMay 24, 09:15 UTC1h 55m
2026-05-24 BEL6JW BRU → IBZ May 24, 04:15 UTCMay 24, 06:10 UTC1h 55m
2026-05-23 BEL7AM VIE → BRU May 23, 16:30 UTCMay 23, 17:50 UTC1h 20m
2026-05-23 BEL3XW BRU → VIE May 23, 14:05 UTCMay 23, 15:30 UTC1h 25m
2026-05-23 BEL3LZ LIN → BRU May 23, 11:20 UTCMay 23, 12:30 UTC1h 10m
2026-05-23 BEL5WE BRU → LIN May 23, 09:10 UTCMay 23, 10:15 UTC1h 5m
2026-05-22 BEL3CR HER → BRU May 22, 20:10 UTCMay 22, 21:15 UTC1h 5m
2026-05-22 BEL4JW BRU → CPH May 22, 17:45 UTCMay 22, 18:50 UTC1h 5m
2026-05-22 BEL4LZ FRA → BRU May 22, 11:05 UTCMay 22, 11:40 UTC35m

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 2h 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 BEL9PY, BEL8ZB, BEL5WE, BEL4LZ, BEL3LZ.