Apparatus

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sensors Mode-S transponder

44D071

ICAO 24-bit transponder address · allocated to Belgium

Currently assigned to OO-TCQ · AIRBUS A-320

Hex
44D071
Octal
21150161
Decimal
4,509,809
Country
BE
Tail
OO-TCQ
Type
A320
No current signal · last broadcast 1h ago
Flights observed
395
Distinct callsigns
20
Country
BE
Last broadcast
1h ago

Last known position

Most recent position reported by Mode-S 44D071.

Country allocation

The ICAO 24-bit address 44D071 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
BEL9EL - 6 2026-07-01
BEL8NY - 6 2026-07-05
BEL72R - 6 2026-07-05
BEL6VP - 6 2026-07-10
BEL6VF Brussels Airlines 6 2026-07-05
BEL4GV - 6 2026-07-05
BEL1YC - 6 2026-07-01
BEL1EV - 6 2026-07-10
BEL92K Brussels Airlines 5 2026-06-29
BEL76T - 5 2026-06-18
BEL5UC - 5 2026-07-07
BEL3KK Brussels Airlines 5 2026-06-26
BEL2UE - 5 2026-06-26
BEL2HV - 5 2026-07-07
BEL29D - 5 2026-06-17
BEL9SE - 4 2026-07-12
BEL9HR - 4 2026-06-27
BEL8LT - 4 2026-06-22
BEL8HW Brussels Airlines 4 2026-06-11
BEL8CZ - 4 2026-06-29

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-14 BEL9RZ - Jul 14, 17:45 UTCJul 14, 20:15 UTC2h 30m
2026-07-14 BEL4NK BER → BRU Jul 14, 11:55 UTCJul 14, 13:05 UTC1h 10m
2026-07-14 BEL8CE BRU → BER Jul 14, 09:40 UTCJul 14, 10:45 UTC1h 5m
2026-07-14 BEL6NQ - Jul 14, 05:15 UTCJul 14, 06:30 UTC1h 15m
2026-07-13 BEL5EP BRU → CPH Jul 13, 19:20 UTCJul 13, 20:30 UTC1h 10m
2026-07-13 BEL8AJ - Jul 13, 16:35 UTCJul 13, 18:10 UTC1h 35m
2026-07-13 BEL9EU BRU → OSL Jul 13, 13:50 UTCJul 13, 15:25 UTC1h 35m
2026-07-13 BEL75Y - Jul 13, 09:05 UTCJul 13, 12:25 UTC3h 20m
2026-07-13 BEL1TE BRU → KGS Jul 13, 04:50 UTCJul 13, 07:40 UTC2h 50m
2026-07-12 BEL5PR FRA → BRU Jul 12, 20:05 UTCJul 12, 20:50 UTC45m
2026-07-12 BEL2LG BRU → FRA Jul 12, 17:55 UTCJul 12, 18:35 UTC40m
2026-07-12 BEL2CA - Jul 12, 15:30 UTCJul 12, 16:30 UTC1h 0m
2026-07-12 BEL9SE BRU → GVA Jul 12, 13:10 UTCJul 12, 14:10 UTC1h 0m
2026-07-12 BEL5DP - Jul 12, 10:30 UTCJul 12, 11:50 UTC1h 20m
2026-07-12 BEL4RE - Jul 12, 07:31 UTCJul 12, 08:50 UTC1h 20m
2026-07-10 BEL4WF BUD → BRU Jul 10, 17:05 UTCJul 10, 18:45 UTC1h 40m
2026-07-10 BEL6PR BRU → BUD Jul 10, 14:15 UTCJul 10, 15:45 UTC1h 30m
2026-07-10 BEL1EV - Jul 10, 11:05 UTCJul 10, 12:35 UTC1h 30m
2026-07-10 BEL6VP BRU → VCE Jul 10, 08:15 UTCJul 10, 09:35 UTC1h 20m
2026-07-10 BEL7HQ - Jul 10, 04:55 UTCJul 10, 06:45 UTC1h 50m
2026-07-09 BEL9FL BRU → ARN Jul 9, 19:25 UTCJul 9, 21:15 UTC1h 50m
2026-07-09 BEL2YK - Jul 9, 14:10 UTCJul 9, 16:20 UTC2h 10m
2026-07-09 BEL6EP - Jul 9, 10:20 UTCJul 9, 12:40 UTC2h 20m
2026-07-09 BEL7DD - Jul 9, 07:35 UTCJul 9, 08:35 UTC1h 0m
2026-07-09 BEL7TC - Jul 9, 05:00 UTCJul 9, 06:00 UTC1h 0m
2026-07-08 BEL5GT - Jul 8, 18:40 UTCJul 8, 21:05 UTC2h 25m
2026-07-08 BEL4GU - Jul 8, 14:45 UTCJul 8, 17:05 UTC2h 20m
2026-07-08 BEL3HE LIS → BRU Jul 8, 11:10 UTCJul 8, 13:30 UTC2h 20m
2026-07-08 BEL2DY BRU → LIS Jul 8, 07:25 UTCJul 8, 09:55 UTC2h 30m
2026-07-08 BEL8CL - Jul 8, 05:25 UTCJul 8, 06:10 UTC45m
2026-07-07 BEL3TX - Jul 7, 19:05 UTCJul 7, 19:55 UTC50m
2026-07-07 BEL5DP BIO → BRU Jul 7, 15:25 UTCJul 7, 16:50 UTC1h 25m
2026-07-07 BEL4RE - Jul 7, 12:20 UTCJul 7, 13:40 UTC1h 20m
2026-07-07 BEL5UC - Jul 7, 09:15 UTCJul 7, 11:10 UTC1h 55m
2026-07-07 BEL2HV - Jul 7, 05:55 UTCJul 7, 07:45 UTC1h 50m
2026-07-06 BEL6AT - Jul 6, 15:30 UTCJul 6, 20:55 UTC5h 25m
2026-07-06 BEL3HE LIS → BRU Jul 6, 11:25 UTCJul 6, 13:40 UTC2h 15m
2026-07-06 BEL2DY - Jul 6, 07:40 UTCJul 6, 10:00 UTC2h 20m
2026-07-05 BEL72R - Jul 5, 19:45 UTCJul 5, 20:45 UTC1h 0m
2026-07-05 BEL4GV - Jul 5, 17:40 UTCJul 5, 18:35 UTC55m
2026-07-05 BEL6VF NCE → BRU Jul 5, 15:00 UTCJul 5, 16:20 UTC1h 20m
2026-07-05 BEL8NY - Jul 5, 12:25 UTCJul 5, 13:50 UTC1h 25m
2026-07-04 BEL8PX - Jul 4, 13:05 UTCJul 5, 00:15 UTC11h 10m
2026-07-04 BEL8EM - Jul 4, 09:15 UTCJul 4, 11:45 UTC2h 30m
2026-07-04 BEL5AL - Jul 4, 05:00 UTCJul 4, 07:25 UTC2h 25m
2026-07-03 BEL6FA - Jul 3, 18:50 UTCJul 3, 21:10 UTC2h 20m
2026-07-03 BEL6AT - Jul 3, 15:35 UTCJul 3, 17:35 UTC2h 0m
2026-07-03 BEL5VA - Jul 3, 12:30 UTCJul 3, 14:20 UTC1h 50m
2026-07-03 BEL7VB - Jul 3, 09:05 UTCJul 3, 10:40 UTC1h 35m
2026-07-03 BEL5AU - Jul 3, 05:05 UTCJul 3, 06:35 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-TCQ page for operator, model, and routing details .

Mode-S 44D071 frequently asked

What is Mode-S code 44D071?
44D071 is an ICAO 24-bit transponder address. Allocated to Belgium. Assigned to OO-TCQ.
Where is Mode-S 44D071 registered?
Mode-S code 44D071 is allocated to Belgium (BE). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 44D071 broadcasting right now?
No active broadcast right now. Last signal was 1h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 44D071, octal 21150161, decimal 4,509,809.
What flights does 44D071 operate?
Mode-S 44D071 has broadcast 20 distinct callsigns, including BEL9EL, BEL8NY, BEL72R, BEL6VP, BEL6VF.