Apparatus

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sensors Mode-S transponder

44CE66

ICAO 24-bit transponder address · allocated to Belgium

Currently assigned to OO-SSF · AIRBUS A-319

Hex
44CE66
Octal
21147146
Decimal
4,509,286
Country
BE
Tail
OO-SSF
Type
A319
No current signal · last broadcast Jul 26, 21:05 UTC
Flights observed
549
Distinct callsigns
20
Country
BE
Last broadcast
Jul 26, 21:05 UTC

Last known position

Most recent position reported by Mode-S 44CE66.

Country allocation

The ICAO 24-bit address 44CE66 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 33 2026-07-19
BEL7YC Brussels Airlines 30 2026-07-19
BEL9PY - 9 2026-07-02
BEL8KA - 9 2026-07-19
BEL5EP - 9 2026-07-12
BEL3SG - 9 2026-07-19
BEL6NQ - 8 2026-07-13
BEL5XD Brussels Airlines 8 2026-07-02
BEL5BJ Brussels Airlines 8 2026-07-26
BEL9WB Brussels Airlines 7 2026-07-24
BEL9HZ - 7 2026-07-14
BEL8MP - 7 2026-07-09
BEL5UB - 7 2026-07-09
BEL2SJ - 7 2026-07-09
BEL1PD Brussels Airlines 7 2026-07-25
BEL19V - 7 2026-07-10
BEL9CJ Brussels Airlines 6 2026-07-26
BEL8YE Brussels Airlines 6 2026-07-24
BEL8UK Brussels Airlines 6 2026-07-26
BEL8DM - 6 2026-07-07

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 BEL5BJ BRU → MAN Jul 26, 20:00 UTCJul 26, 21:00 UTC1h 0m
2026-07-26 BEL9CJ BRU → NDR Jul 26, 18:10 UTCJul 26, 18:40 UTC30m
2026-07-26 BEL8UK BRU → FRA Jul 26, 15:55 UTCJul 26, 16:35 UTC40m
2026-07-26 BEL9SW MUC → BRU Jul 26, 13:50 UTCJul 26, 14:50 UTC1h 0m
2026-07-26 BEL7LF BRU → MUC Jul 26, 11:25 UTCJul 26, 12:25 UTC1h 0m
2026-07-26 BEL7DD MUC → BRU Jul 26, 07:15 UTCJul 26, 08:15 UTC1h 0m
2026-07-26 BEL7TC BRU → MUC Jul 26, 05:00 UTCJul 26, 06:00 UTC1h 0m
2026-07-25 BEL5KV BRU → VIE Jul 25, 16:35 UTCJul 25, 19:00 UTC2h 25m
2026-07-25 BEL3MN BRU → AGP Jul 25, 12:55 UTCJul 25, 15:20 UTC2h 25m
2026-07-25 BEL47P PRG → BRU Jul 25, 10:05 UTCJul 25, 11:10 UTC1h 5m
2026-07-25 BEL2NM BRU → PRG Jul 25, 07:50 UTCJul 25, 09:00 UTC1h 10m
2026-07-25 BEL1PD MRS → BRU Jul 25, 04:55 UTCJul 25, 06:10 UTC1h 15m
2026-07-24 BEL9WB BRU → MRS Jul 24, 19:30 UTCJul 24, 20:55 UTC1h 25m
2026-07-24 BEL3JZ BER → BRU Jul 24, 17:10 UTCJul 24, 18:10 UTC1h 0m
2026-07-24 BEL2HJ BRU → BER Jul 24, 14:55 UTCJul 24, 15:55 UTC1h 0m
2026-07-24 BEL7AD MAD → BRU Jul 24, 11:50 UTCJul 24, 13:40 UTC1h 50m
2026-07-24 BEL5EN BRU → MAD Jul 24, 07:50 UTCJul 24, 09:50 UTC2h 0m
2026-07-24 BEL8YE BER → BRU Jul 24, 05:05 UTCJul 24, 06:05 UTC1h 0m
2026-07-23 BEL1ZK BRU → BER Jul 23, 18:50 UTCJul 23, 20:00 UTC1h 10m
2026-07-23 BEL6VF NCE → BRU Jul 23, 14:45 UTCJul 23, 16:10 UTC1h 25m
2026-07-23 BEL8NY BRU → NCE Jul 23, 12:05 UTCJul 23, 13:30 UTC1h 25m
2026-07-23 BEL4NK BER → BRU Jul 23, 09:50 UTCJul 23, 10:50 UTC1h 0m
2026-07-23 BEL8CE BRU → BER Jul 23, 07:35 UTCJul 23, 08:45 UTC1h 10m
2026-07-23 BEL7ZC GVA → BRU Jul 23, 05:20 UTCJul 23, 06:15 UTC55m
2026-07-22 BEL92K BRU → GVA Jul 22, 18:45 UTCJul 22, 19:40 UTC55m
2026-07-22 BEL5VA SPU → BRU Jul 22, 15:45 UTCJul 22, 17:20 UTC1h 35m
2026-07-22 BEL7VB BRU → OLB Jul 22, 12:40 UTCJul 22, 14:10 UTC1h 30m
2026-07-21 BEL72R - Jul 21, 19:40 UTCJul 21, 20:40 UTC1h 0m
2026-07-21 BEL4GV - Jul 21, 17:45 UTCJul 21, 18:40 UTC55m
2026-07-21 BEL2WM - Jul 21, 14:25 UTCJul 21, 15:50 UTC1h 25m
2026-07-21 BEL5NZ BRU → BLQ Jul 21, 12:00 UTCJul 21, 13:10 UTC1h 10m
2026-07-21 BEL9HR GVA → BRU Jul 21, 09:35 UTCJul 21, 10:25 UTC50m
2026-07-21 BEL1UF BRU → GVA Jul 21, 07:35 UTCJul 21, 08:30 UTC55m
2026-07-21 BEL2654 MUC → BRU Jul 21, 04:50 UTCJul 21, 05:45 UTC55m
2026-07-20 BEL2653 BRU → MUC Jul 20, 19:35 UTCJul 20, 20:30 UTC55m
2026-07-20 BEL7LW OPO → BRU Jul 20, 16:05 UTCJul 20, 18:05 UTC2h 0m
2026-07-20 BEL3CP - Jul 20, 12:50 UTCJul 20, 14:55 UTC2h 5m
2026-07-20 BEL4NK BER → BRU Jul 20, 09:45 UTCJul 20, 10:45 UTC1h 0m
2026-07-20 BEL8CE BRU → BER Jul 20, 07:40 UTCJul 20, 08:45 UTC1h 5m
2026-07-20 BEL1PD MRS → BRU Jul 20, 04:50 UTCJul 20, 06:10 UTC1h 20m
2026-07-19 BEL9WB - Jul 19, 19:45 UTCJul 19, 21:05 UTC1h 20m
2026-07-19 BEL3SG - Jul 19, 16:30 UTCJul 19, 18:20 UTC1h 50m
2026-07-19 BEL8KA - Jul 19, 13:15 UTCJul 19, 14:45 UTC1h 30m
2026-07-19 BEL7YC FLR → BRU Jul 19, 10:25 UTCJul 19, 11:55 UTC1h 30m
2026-07-19 BEL5FJ BRU → FLR Jul 19, 08:00 UTCJul 19, 09:20 UTC1h 20m
2026-07-18 BEL1PA VLC → BRU Jul 18, 16:50 UTCJul 18, 18:50 UTC2h 0m
2026-07-18 BEL7JV BRU → VLC Jul 18, 13:55 UTCJul 18, 15:50 UTC1h 55m
2026-07-18 BEL7YC - Jul 18, 10:45 UTCJul 18, 12:10 UTC1h 25m
2026-07-18 BEL5FJ BRU → FLR Jul 18, 08:00 UTCJul 18, 09:20 UTC1h 20m
2026-07-17 BEL5LC - Jul 17, 20:00 UTCJul 17, 21:39 UTC1h 40m

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

Mode-S 44CE66 frequently asked

What is Mode-S code 44CE66?
44CE66 is an ICAO 24-bit transponder address. Allocated to Belgium. Assigned to OO-SSF.
Where is Mode-S 44CE66 registered?
Mode-S code 44CE66 is allocated to Belgium (BE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 44CE66 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:05 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 44CE66, octal 21147146, decimal 4,509,286.
What flights does 44CE66 operate?
Mode-S 44CE66 has broadcast 20 distinct callsigns, including BEL5FJ, BEL7YC, BEL9PY, BEL8KA, BEL5EP.