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 6h ago
Flights observed
242
Distinct callsigns
20
Country
BE
Last broadcast
6h ago

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 14 2026-05-30
BEL7YC Brussels Airlines 13 2026-05-30
BEL3WF Brussels Airlines 5 2026-06-01
BEL1VC Brussels Airlines 5 2026-06-01
BEL8LT Brussels Airlines 4 2026-05-26
BEL8DM - 4 2026-05-27
BEL7TA Brussels Airlines 4 2026-05-27
BEL4DQ Brussels Airlines 4 2026-05-27
BEL4BP Brussels Airlines 4 2026-05-26
BEL2ZH Brussels Airlines 4 2026-05-26
BEL2LZ - 4 2026-05-26
BEL9SW Brussels Airlines 3 2026-05-25
BEL9PY Brussels Airlines 3 2026-05-17
BEL9NK Brussels Airlines 3 2026-05-28
BEL9DL Brussels Airlines 3 2026-05-28
BEL9CJ Brussels Airlines 3 2026-05-29
BEL8YE Brussels Airlines 3 2026-05-28
BEL8UK Brussels Airlines 3 2026-05-29
BEL8RD Brussels Airlines 3 2026-05-13
BEL8AM Brussels Airlines 3 2026-05-16

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-02 BEL6CT BCN → BRU Jun 2, 18:45 UTCJun 2, 20:50 UTC2h 5m
2026-06-02 BEL7FP BRU → BCN Jun 2, 08:30 UTCJun 2, 10:10 UTC1h 40m
2026-06-02 BEL5AU OSL → BRU Jun 2, 05:00 UTCJun 2, 06:40 UTC1h 40m
2026-06-01 BEL1EW BRU → OSL Jun 1, 19:05 UTCJun 1, 20:40 UTC1h 35m
2026-06-01 BEL1VC ATH → BRU Jun 1, 12:55 UTCJun 1, 15:55 UTC3h 0m
2026-06-01 BEL3WF BRU → ATH Jun 1, 08:55 UTCJun 1, 11:35 UTC2h 40m
2026-06-01 BEL2654 MUC → BRU Jun 1, 04:50 UTCJun 1, 05:50 UTC1h 0m
2026-05-31 BEL2653 BRU → MUC May 31, 19:25 UTCMay 31, 20:30 UTC1h 5m
2026-05-31 BEL1VC ATH → BRU May 31, 12:45 UTCMay 31, 15:35 UTC2h 50m
2026-05-31 BEL3WF BRU → ATH May 31, 08:25 UTCMay 31, 10:50 UTC2h 25m
2026-05-30 BEL4VL PMI → BRU May 30, 20:10 UTCMay 30, 22:10 UTC2h 0m
2026-05-30 BEL9905 BRU → BRU May 30, 17:05 UTCMay 30, 18:55 UTC1h 50m
2026-05-30 BEL7YC FLR → BRU May 30, 13:40 UTCMay 30, 15:10 UTC1h 30m
2026-05-30 BEL5FJ BRU → FLR May 30, 11:05 UTCMay 30, 12:25 UTC1h 20m
2026-05-30 BEL2FR MAD → BRU May 30, 04:55 UTCMay 30, 06:45 UTC1h 50m
2026-05-29 BEL2FM BRU → MAD May 29, 20:30 UTCMay 29, 22:20 UTC1h 50m
2026-05-29 BEL9CJ BRU → NDR May 29, 17:50 UTCMay 29, 18:25 UTC35m
2026-05-29 BEL8UK BRU → FRA May 29, 15:40 UTCMay 29, 16:20 UTC40m
2026-05-29 BEL3LZ LIN → BRU May 29, 11:25 UTCMay 29, 12:40 UTC1h 15m
2026-05-29 BEL5WE BRU → LIN May 29, 09:00 UTCMay 29, 10:05 UTC1h 5m
2026-05-29 BEL5HW BER → BRU May 29, 06:40 UTCMay 29, 07:40 UTC1h 0m
2026-05-29 BEL2JY BRU → BER May 29, 04:45 UTCMay 29, 05:50 UTC1h 5m
2026-05-28 BEL9NK BER → BRU May 28, 19:20 UTCMay 28, 20:20 UTC1h 0m
2026-05-28 BEL9DL BRU → BER May 28, 17:10 UTCMay 28, 18:15 UTC1h 5m
2026-05-28 BEL1VC ATH → BRU May 28, 12:55 UTCMay 28, 16:00 UTC3h 5m
2026-05-28 BEL3WF BRU → ATH May 28, 08:50 UTCMay 28, 11:30 UTC2h 40m
2026-05-28 BEL8YE BER → BRU May 28, 05:05 UTCMay 28, 06:10 UTC1h 5m
2026-05-27 BEL1ZK BRU → BER May 27, 19:40 UTCMay 27, 20:50 UTC1h 10m
2026-05-27 BEL7TA GOT → BRU May 27, 17:10 UTCMay 27, 18:30 UTC1h 20m
2026-05-27 BEL4DQ BRU → GOT May 27, 14:15 UTCMay 27, 15:40 UTC1h 25m
2026-05-27 BEL6UA ARN → BRU May 27, 11:10 UTCMay 27, 13:05 UTC1h 55m
2026-05-27 BEL2JZ BRU → ARN May 27, 08:20 UTCMay 27, 10:10 UTC1h 50m
2026-05-27 BEL8DM BCN → BRU May 27, 03:39 UTCMay 27, 05:19 UTC1h 40m
2026-05-26 BEL2LZ - May 26, 19:15 UTCMay 26, 20:50 UTC1h 35m
2026-05-26 BEL2ZH ARN → BRU May 26, 15:45 UTCMay 26, 17:39 UTC1h 55m
2026-05-26 BEL4BP BRU → ARN May 26, 12:45 UTCMay 26, 14:30 UTC1h 45m
2026-05-26 BEL4KY FRA → BRU May 26, 11:05 UTCMay 26, 11:39 UTC35m
2026-05-26 BEL3DQ BRU → FRA May 26, 08:50 UTCMay 26, 09:25 UTC35m
2026-05-26 BEL7NL GVA → BRU May 26, 06:39 UTCMay 26, 07:34 UTC55m
2026-05-26 BEL8LT ALC → BRU May 26, 04:35 UTCMay 26, 05:34 UTC1h 0m
2026-05-25 BEL9SW MUC → BRU May 25, 13:30 UTCMay 25, 14:35 UTC1h 5m
2026-05-25 BEL7LF BRU → MUC May 25, 11:00 UTCMay 25, 11:55 UTC55m
2026-05-25 BEL4TQ ZRH → BRU May 25, 07:15 UTCMay 25, 08:15 UTC1h 0m
2026-05-25 BEL8HQ BRU → ZRH May 25, 05:15 UTCMay 25, 06:05 UTC50m
2026-05-24 BEL9NK BER → BRU May 24, 19:05 UTCMay 24, 20:15 UTC1h 10m
2026-05-24 BEL9DL BRU → BER May 24, 16:45 UTCMay 24, 17:55 UTC1h 10m
2026-05-24 BEL9BP MUC → BRU May 24, 14:10 UTCMay 24, 15:15 UTC1h 5m
2026-05-24 BEL2PN BRU → SPU May 24, 11:55 UTCMay 24, 12:55 UTC1h 0m
2026-05-24 BEL4LZ FRA → BRU May 24, 10:05 UTCMay 24, 10:45 UTC40m
2026-05-24 BEL8ZB BRU → FRA May 24, 07:55 UTCMay 24, 08:25 UTC30m

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 6h ago.
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, BEL3WF, BEL1VC, BEL8LT.