Apparatus

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sensors Mode-S transponder

7C44F6

ICAO 24-bit transponder address · allocated to Australia

Currently assigned to VH-NWO · PILATUS PC-24 · operated by ROYAL FLYING DOCTOR SERVICE OF AUSTRALIA (WESTERN OPERATIONS)

Hex
7C44F6
Octal
37042366
Decimal
8,144,118
Country
AU
Tail
VH-NWO
Type
PC24
No current signal · last broadcast 17h ago
Flights observed
10
Distinct callsigns
1
Country
AU
Last broadcast
17h ago

Last known position

Most recent position reported by Mode-S 7C44F6.

Country allocation

The ICAO 24-bit address 7C44F6 falls within the block assigned to Australia (AU) by ICAO Annex 10, Volume III. Every aircraft registered in Australia 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 1 distinct

Callsign Airline Flights Last seen
FD626J - 10 2026-04-14

Recent flights last 10

DateFlightRouteTakeoffLandingDuration
2026-04-14 FD626J - Apr 14, 08:15 UTCApr 14, 08:55 UTC40m
2026-04-14 FD626J - Apr 14, 07:10 UTCApr 14, 07:40 UTC30m
2026-04-13 FD626J - Apr 13, 23:40 UTCApr 13, 23:45 UTC5m
2026-04-13 FD626J - Apr 13, 19:50 UTCApr 13, 20:05 UTC15m
2026-04-13 FD626J JAD → JAD Apr 13, 17:05 UTCApr 13, 20:05 UTC3h 0m
2026-04-13 FD626J - Apr 13, 09:00 UTCApr 13, 09:35 UTC35m
2026-04-13 FD626J - Apr 13, 05:20 UTCApr 13, 06:00 UTC40m
2026-04-13 FD626J - Apr 13, 04:20 UTCApr 13, 04:30 UTC10m
2026-04-13 FD626J - Apr 13, 04:05 UTCApr 13, 04:30 UTC25m
2026-04-13 FD626J - Apr 13, 00:50 UTCApr 13, 04:15 UTC3h 25m

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 VH-NWO page for operator, model, and routing details .

Mode-S 7C44F6 frequently asked

What is Mode-S code 7C44F6?
7C44F6 is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-NWO.
Where is Mode-S 7C44F6 registered?
Mode-S code 7C44F6 is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C44F6 broadcasting right now?
No active broadcast right now. Last signal was 17h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7C44F6, octal 37042366, decimal 8,144,118.
What flights does 7C44F6 operate?
Mode-S 7C44F6 has broadcast 1 distinct callsign, including FD626J.