Apparatus

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sensors Mode-S transponder

44CE79

ICAO 24-bit transponder address · allocated to Belgium

Currently assigned to OO-SSY · AIRBUS A-319

Hex
44CE79
Octal
21147171
Decimal
4,509,305
Country
BE
Tail
OO-SSY
Type
A319
No current signal · last broadcast Jul 26, 20:25 UTC
Flights observed
508
Distinct callsigns
20
Country
BE
Last broadcast
Jul 26, 20:25 UTC

Last known position

Most recent position reported by Mode-S 44CE79.

Country allocation

The ICAO 24-bit address 44CE79 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
BEL5FJ Brussels Airlines 25 2026-07-23
BEL7YC Brussels Airlines 24 2026-07-23
BEL9PY - 9 2026-07-17
BEL5XD - 9 2026-07-17
BEL8YE - 8 2026-07-13
BEL3WF Brussels Airlines 8 2026-07-19
BEL1ZK - 8 2026-07-12
BEL1VC - 8 2026-07-19
BEL5EP - 7 2026-06-24
BEL6NQ - 6 2026-06-25
BEL5WE - 6 2026-07-15
BEL3LZ - 6 2026-07-15
BEL9EU Brussels Airlines 5 2026-07-26
BEL8LT - 5 2026-07-09
BEL8AJ Brussels Airlines 5 2026-07-26
BEL5HW - 5 2026-06-26
BEL2SJ Brussels Airlines 5 2026-07-23
BEL2QG Brussels Airlines 5 2026-07-26
BEL2JY - 5 2026-06-26
BEL1YJ Brussels Airlines 5 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 BEL3UC BRU → GOT Jul 26, 19:10 UTCJul 26, 20:25 UTC1h 15m
2026-07-26 BEL8AJ OSL → BRU Jul 26, 16:20 UTCJul 26, 17:55 UTC1h 35m
2026-07-26 BEL9EU BRU → OSL Jul 26, 13:35 UTCJul 26, 15:15 UTC1h 40m
2026-07-26 BEL2QG EVE → EVE Jul 26, 09:45 UTCJul 26, 12:20 UTC2h 35m
2026-07-26 BEL1YJ BRU → BRU Jul 26, 05:30 UTCJul 26, 07:55 UTC2h 26m
2026-07-25 BEL7BK HER → BRU Jul 25, 18:30 UTCJul 25, 21:55 UTC3h 25m
2026-07-25 BEL7KT BRU → HER Jul 25, 14:05 UTCJul 25, 17:00 UTC2h 55m
2026-07-25 BEL9PW ALC → BRU Jul 25, 07:30 UTCJul 25, 09:30 UTC2h 0m
2026-07-25 BEL8NV BRU → ALC Jul 25, 04:05 UTCJul 25, 06:15 UTC2h 10m
2026-07-24 BEL5PR FRA → BRU Jul 24, 19:45 UTCJul 24, 20:20 UTC35m
2026-07-24 BEL2LG BRU → FRA Jul 24, 17:35 UTCJul 24, 18:15 UTC40m
2026-07-24 BEL74C BCN → BRU Jul 24, 14:00 UTCJul 24, 15:40 UTC1h 40m
2026-07-24 BEL9QH BRU → BCN Jul 24, 11:10 UTCJul 24, 12:55 UTC1h 45m
2026-07-24 BEL19V VCE → BRU Jul 24, 05:10 UTCJul 24, 06:30 UTC1h 20m
2026-07-23 BEL2SJ BRU → VCE Jul 23, 19:50 UTCJul 23, 21:00 UTC1h 10m
2026-07-23 BEL3SG BRU → CDG Jul 23, 16:55 UTCJul 23, 18:35 UTC1h 40m
2026-07-23 BEL8KA BRU → FCO Jul 23, 13:20 UTCJul 23, 14:55 UTC1h 35m
2026-07-23 BEL7YC FLR → BRU Jul 23, 09:55 UTCJul 23, 11:30 UTC1h 35m
2026-07-23 BEL5FJ BRU → FLR Jul 23, 07:40 UTCJul 23, 09:00 UTC1h 20m
2026-07-19 BEL1VC ATH → BRU Jul 19, 18:35 UTCJul 19, 21:30 UTC2h 55m
2026-07-19 BEL3WF BRU → ATH Jul 19, 14:25 UTCJul 19, 17:10 UTC2h 45m
2026-07-19 BEL2QG EVE → EVE Jul 19, 09:20 UTCJul 19, 11:55 UTC2h 35m
2026-07-19 BEL1YJ BRU → BRU Jul 19, 05:30 UTCJul 19, 08:00 UTC2h 30m
2026-07-18 BEL7BK HER → BRU Jul 18, 19:20 UTCJul 18, 22:30 UTC3h 10m
2026-07-18 BEL7KT BRU → HER Jul 18, 15:05 UTCJul 18, 17:50 UTC2h 45m
2026-07-18 BEL6CT BCN → BRU Jul 18, 11:50 UTCJul 18, 13:30 UTC1h 40m
2026-07-18 BEL7FP BRU → BCN Jul 18, 08:15 UTCJul 18, 10:00 UTC1h 45m
2026-07-18 BEL8CL BRU → KGS Jul 18, 05:40 UTCJul 18, 06:25 UTC45m
2026-07-17 BEL3TX BRU → HAM Jul 17, 19:15 UTCJul 17, 20:04 UTC50m
2026-07-17 BEL9PY WAW → BRU Jul 17, 16:34 UTCJul 17, 18:15 UTC1h 40m
2026-07-17 BEL5XD BRU → WAW Jul 17, 13:35 UTCJul 17, 15:10 UTC1h 35m
2026-07-17 BEL7YC - Jul 17, 10:44 UTCJul 17, 12:19 UTC1h 35m
2026-07-17 BEL5FJ - Jul 17, 07:35 UTCJul 17, 08:54 UTC1h 20m
2026-07-16 BEL6AK MUC → BRU Jul 16, 20:35 UTCJul 16, 21:40 UTC1h 5m
2026-07-16 BEL4HU - Jul 16, 18:19 UTCJul 16, 19:10 UTC50m
2026-07-16 BEL6DN ALC → BRU Jul 16, 13:34 UTCJul 16, 15:40 UTC2h 5m
2026-07-16 BEL4AR BRU → ALC Jul 16, 10:15 UTCJul 16, 12:34 UTC2h 20m
2026-07-16 BEL7ZC - Jul 16, 05:25 UTCJul 16, 06:25 UTC1h 0m
2026-07-15 BEL92K BRU → GVA Jul 15, 19:15 UTCJul 15, 20:10 UTC55m
2026-07-15 BEL8MN - Jul 15, 16:25 UTCJul 15, 17:40 UTC1h 15m
2026-07-15 BEL7WA BRU → CPH Jul 15, 14:05 UTCJul 15, 15:20 UTC1h 15m
2026-07-15 BEL3LZ LIN → BRU Jul 15, 11:40 UTCJul 15, 13:00 UTC1h 20m
2026-07-15 BEL5WE BRU → LIN Jul 15, 09:30 UTCJul 15, 10:40 UTC1h 10m
2026-07-15 BEL9DN FRA → BRU Jul 15, 07:10 UTCJul 15, 07:50 UTC40m
2026-07-15 BEL8QB BRU → FRA Jul 15, 05:10 UTCJul 15, 05:50 UTC40m
2026-07-14 BEL5LC - Jul 14, 19:25 UTCJul 14, 21:15 UTC1h 50m
2026-07-14 BEL3WD - Jul 14, 16:40 UTCJul 14, 18:10 UTC1h 30m
2026-07-14 BEL9BP - Jul 14, 14:15 UTCJul 14, 15:20 UTC1h 5m
2026-07-14 BEL2PN - Jul 14, 12:00 UTCJul 14, 12:55 UTC55m
2026-07-14 BEL5MQ HAM → BRU Jul 14, 10:00 UTCJul 14, 10:55 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-SSY page for operator, model, and routing details .

Mode-S 44CE79 frequently asked

What is Mode-S code 44CE79?
44CE79 is an ICAO 24-bit transponder address. Allocated to Belgium. Assigned to OO-SSY.
Where is Mode-S 44CE79 registered?
Mode-S code 44CE79 is allocated to Belgium (BE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 44CE79 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 20:25 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 44CE79, octal 21147171, decimal 4,509,305.
What flights does 44CE79 operate?
Mode-S 44CE79 has broadcast 20 distinct callsigns, including BEL5FJ, BEL7YC, BEL9PY, BEL5XD, BEL8YE.