sensors Mode-S transponder

44A831

ICAO 24-bit transponder address · allocated to Belgium

Currently assigned to OO-JAQ · BOEING 737-800

Hex
44A831
Octal
21124061
Decimal
4,499,505
Country
BE
Tail
OO-JAQ
Type
B738
No current signal · last broadcast 14h ago
Flights observed
9
Distinct callsigns
5
Country
BE
Last broadcast
14h ago

Last known position

Most recent position reported by Mode-S 44A831.

Country allocation

The ICAO 24-bit address 44A831 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 5 distinct

Callsign Airline Flights Last seen
JAF12M Jetairfly 3 2026-04-13
JAF7HW Jetairfly 2 2026-04-13
JAF3NE - 2 2026-04-14
JAF88H Jetairfly 1 2026-04-14
JAF2JX - 1 2026-04-12

Recent flights last 9

DateFlightRouteTakeoffLandingDuration
2026-04-14 JAF3NE - Apr 14, 09:10 UTCApr 14, 10:50 UTC1h 40m
2026-04-14 JAF3NE - Apr 14, 08:05 UTCApr 14, 09:05 UTC1h 0m
2026-04-14 JAF88H BRU → AGP Apr 14, 05:15 UTCApr 14, 06:35 UTC1h 20m
2026-04-13 JAF12M TFS → BRU Apr 13, 12:20 UTCApr 13, 14:05 UTC1h 45m
2026-04-13 JAF12M TFS → BRU Apr 13, 11:55 UTCApr 13, 14:05 UTC2h 10m
2026-04-13 JAF12M TFS → BRU Apr 13, 09:55 UTCApr 13, 12:15 UTC2h 20m
2026-04-13 JAF7HW BRU → TFS Apr 13, 07:55 UTCApr 13, 08:15 UTC20m
2026-04-13 JAF7HW BRU → TFS Apr 13, 04:25 UTCApr 13, 08:15 UTC3h 50m
2026-04-12 JAF2JX - Apr 12, 17:15 UTCApr 12, 20:15 UTC3h 0m

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

Mode-S 44A831 frequently asked

What is Mode-S code 44A831?
44A831 is an ICAO 24-bit transponder address. Allocated to Belgium. Assigned to OO-JAQ.
Where is Mode-S 44A831 registered?
Mode-S code 44A831 is allocated to Belgium (BE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 44A831 broadcasting right now?
No active broadcast right now. Last signal was 14h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 44A831, octal 21124061, decimal 4,499,505.
What flights does 44A831 operate?
Mode-S 44A831 has broadcast 5 distinct callsigns, including JAF12M, JAF7HW, JAF3NE, JAF88H, JAF2JX.