sensors Mode-S transponder

7C1CA2

ICAO 24-bit transponder address · allocated to Australia

Currently assigned to VH-FXW · PILATUS PC-12 · operated by ROYAL FLYING DOCTOR SERVICE OF AUSTRALIA CENTRAL OPERATIONS

Hex
7C1CA2
Octal
37016242
Decimal
8,133,794
Country
AU
Tail
VH-FXW
Type
PC12
No current signal · last broadcast 12h ago
Flights observed
12
Distinct callsigns
5
Country
AU
Last broadcast
12h ago

Last known position

Most recent position reported by Mode-S 7C1CA2.

Country allocation

The ICAO 24-bit address 7C1CA2 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 5 distinct

Callsign Airline Flights Last seen
FD534 - 5 2026-04-13
FD549 - 3 2026-04-14
FD518 - 2 2026-04-13
VHFXW - 1 2026-04-13
FD543 - 1 2026-04-12

Recent flights last 12

DateFlightRouteTakeoffLandingDuration
2026-04-14 FD549 - Apr 14, 10:20 UTCApr 14, 10:50 UTC30m
2026-04-14 FD549 - Apr 14, 07:25 UTCApr 14, 08:10 UTC45m
2026-04-14 FD549 - Apr 14, 05:40 UTCApr 14, 06:15 UTC35m
2026-04-13 VHFXW - Apr 13, 23:30 UTCApr 13, 23:45 UTC15m
2026-04-13 FD534 - Apr 13, 19:20 UTCApr 13, 19:50 UTC30m
2026-04-13 FD534 - Apr 13, 17:55 UTCApr 13, 18:25 UTC30m
2026-04-13 FD534 - Apr 13, 16:15 UTCApr 13, 16:40 UTC25m
2026-04-13 FD534 - Apr 13, 14:30 UTCApr 13, 15:05 UTC35m
2026-04-13 FD534 - Apr 13, 11:10 UTCApr 13, 11:50 UTC40m
2026-04-13 FD518 - Apr 13, 04:20 UTCApr 13, 04:40 UTC20m
2026-04-13 FD518 - Apr 13, 03:55 UTCApr 13, 04:15 UTC20m
2026-04-12 FD543 - Apr 12, 17:15 UTCApr 12, 17:35 UTC20m

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

Mode-S 7C1CA2 frequently asked

What is Mode-S code 7C1CA2?
7C1CA2 is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-FXW.
Where is Mode-S 7C1CA2 registered?
Mode-S code 7C1CA2 is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C1CA2 broadcasting right now?
No active broadcast right now. Last signal was 12h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7C1CA2, octal 37016242, decimal 8,133,794.
What flights does 7C1CA2 operate?
Mode-S 7C1CA2 has broadcast 5 distinct callsigns, including FD534, FD549, FD518, VHFXW, FD543.