Apparatus

Try JFK, AAL1290, BAW, or N225AN.

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 3h ago
Flights observed
478
Distinct callsigns
20
Country
BE
Last broadcast
3h ago

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 - 30 2026-07-14
BEL7YC - 27 2026-07-14
BEL9PY - 9 2026-07-02
BEL5EP - 9 2026-07-12
BEL8KA - 8 2026-07-09
BEL6NQ - 8 2026-07-13
BEL5XD Brussels Airlines 8 2026-07-02
BEL3SG - 8 2026-07-09
BEL9HZ - 7 2026-07-14
BEL8MP - 7 2026-07-09
BEL5UB - 7 2026-07-09
BEL5BJ - 7 2026-07-13
BEL2SJ - 7 2026-07-09
BEL19V - 7 2026-07-10
BEL8DM - 6 2026-07-07
BEL7AM Brussels Airlines 6 2026-06-15
BEL4KY - 6 2026-07-13
BEL3XW Brussels Airlines 6 2026-06-15
BEL3DQ - 6 2026-07-13
BEL2LZ - 6 2026-07-06

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 BEL7YC - Jul 14, 10:20 UTCJul 14, 11:55 UTC1h 35m
2026-07-14 BEL5FJ BRU → FLR Jul 14, 07:40 UTCJul 14, 08:55 UTC1h 15m
2026-07-14 BEL9HZ MAN → BRU Jul 14, 05:35 UTCJul 14, 06:30 UTC55m
2026-07-13 BEL5BJ BRU → MAN Jul 13, 20:05 UTCJul 13, 21:00 UTC55m
2026-07-13 BEL5KV - Jul 13, 16:40 UTCJul 13, 18:50 UTC2h 10m
2026-07-13 BEL3MN - Jul 13, 12:50 UTCJul 13, 15:20 UTC2h 30m
2026-07-13 BEL4KY - Jul 13, 10:55 UTCJul 13, 11:35 UTC40m
2026-07-13 BEL3DQ BRU → FRA Jul 13, 09:10 UTCJul 13, 09:40 UTC30m
2026-07-13 BEL6NQ CPH → BRU Jul 13, 06:05 UTCJul 13, 07:25 UTC1h 20m
2026-07-12 BEL5EP BRU → CPH Jul 12, 19:50 UTCJul 12, 20:55 UTC1h 5m
2026-07-12 BEL9CJ FRA → BRU Jul 12, 17:50 UTCJul 12, 18:30 UTC40m
2026-07-12 BEL8UK - Jul 12, 15:50 UTCJul 12, 16:20 UTC30m
2026-07-12 BEL8HR - Jul 12, 12:35 UTCJul 12, 14:30 UTC1h 55m
2026-07-12 BEL1MG BRU → OPO Jul 12, 09:15 UTCJul 12, 11:25 UTC2h 10m
2026-07-11 BEL7LW OPO → BRU Jul 11, 16:30 UTCJul 11, 18:25 UTC1h 55m
2026-07-11 BEL3CP BRU → OPO Jul 11, 13:20 UTCJul 11, 15:30 UTC2h 10m
2026-07-11 BEL4KY - Jul 11, 10:40 UTCJul 11, 11:20 UTC40m
2026-07-11 BEL3DQ BRU → FRA Jul 11, 08:50 UTCJul 11, 09:25 UTC35m
2026-07-11 BEL9DN - Jul 11, 06:45 UTCJul 11, 07:20 UTC35m
2026-07-11 BEL8QB - Jul 11, 04:50 UTCJul 11, 05:25 UTC35m
2026-07-10 BEL5GT - Jul 10, 18:40 UTCJul 10, 21:05 UTC2h 25m
2026-07-10 BEL4GU - Jul 10, 14:55 UTCJul 10, 17:35 UTC2h 40m
2026-07-10 BEL4UT FAO → BRU Jul 10, 11:20 UTCJul 10, 13:55 UTC2h 35m
2026-07-10 BEL5KF BRU → FAO Jul 10, 07:55 UTCJul 10, 10:25 UTC2h 30m
2026-07-10 BEL19V VCE → BRU Jul 10, 05:15 UTCJul 10, 06:45 UTC1h 30m
2026-07-09 BEL2SJ BRU → VCE Jul 9, 19:30 UTCJul 9, 20:45 UTC1h 15m
2026-07-09 BEL3SG - Jul 9, 16:30 UTCJul 9, 18:20 UTC1h 50m
2026-07-09 BEL8KA - Jul 9, 13:20 UTCJul 9, 14:55 UTC1h 35m
2026-07-09 BEL8MP MAN → BRU Jul 9, 10:55 UTCJul 9, 11:45 UTC50m
2026-07-09 BEL5UB BRU → MAN Jul 9, 08:30 UTCJul 9, 09:25 UTC55m
2026-07-09 BEL6NQ CPH → BRU Jul 9, 05:25 UTCJul 9, 06:35 UTC1h 10m
2026-07-08 BEL5EP - Jul 8, 19:10 UTCJul 8, 20:20 UTC1h 10m
2026-07-08 BEL4CR KRK → BRU Jul 8, 16:25 UTCJul 8, 18:00 UTC1h 35m
2026-07-08 BEL8GQ - Jul 8, 13:45 UTCJul 8, 15:15 UTC1h 30m
2026-07-08 BEL4NK - Jul 8, 09:50 UTCJul 8, 10:50 UTC1h 0m
2026-07-08 BEL8CE - Jul 8, 07:40 UTCJul 8, 08:45 UTC1h 5m
2026-07-08 BEL1PD - Jul 8, 04:55 UTCJul 8, 06:20 UTC1h 25m
2026-07-07 BEL9WB - Jul 7, 19:20 UTCJul 7, 20:35 UTC1h 15m
2026-07-07 BEL7TA - Jul 7, 16:45 UTCJul 7, 18:00 UTC1h 15m
2026-07-07 BEL4DQ BRU → GOT Jul 7, 14:15 UTCJul 7, 15:30 UTC1h 15m
2026-07-07 BEL7YC - Jul 7, 10:00 UTCJul 7, 11:35 UTC1h 35m
2026-07-07 BEL5FJ BRU → FLR Jul 7, 07:20 UTCJul 7, 08:40 UTC1h 20m
2026-07-07 BEL8DM BCN → BRU Jul 7, 03:40 UTCJul 7, 05:30 UTC1h 50m
2026-07-06 BEL2LZ - Jul 6, 19:10 UTCJul 6, 20:50 UTC1h 40m
2026-07-06 BEL8MN CPH → BRU Jul 6, 16:25 UTCJul 6, 17:35 UTC1h 10m
2026-07-06 BEL7WA BRU → CPH Jul 6, 14:05 UTCJul 6, 15:20 UTC1h 15m
2026-07-06 BEL7YC - Jul 6, 10:00 UTCJul 6, 11:35 UTC1h 35m
2026-07-06 BEL5FJ BRU → FLR Jul 6, 07:25 UTCJul 6, 08:45 UTC1h 20m
2026-07-06 BEL8DM BCN → BRU Jul 6, 03:45 UTCJul 6, 05:35 UTC1h 50m
2026-07-05 BEL2LZ - Jul 5, 19:15 UTCJul 5, 20:45 UTC1h 30m

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 3h ago.
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, BEL5EP, BEL8KA.