sensors Mode-S transponder

7C1ACF

ICAO 24-bit transponder address · allocated to Australia

Currently assigned to VH-FKX · BOEING 767-300 · operated by TASMAN CARGO AIRLINES PTY LTD

Hex
7C1ACF
Octal
37015317
Decimal
8,133,327
Country
AU
Tail
VH-FKX
Type
B763
No current signal · last broadcast 12h ago
Flights observed
7
Distinct callsigns
2
Country
AU
Last broadcast
12h ago

Last known position

Most recent position reported by Mode-S 7C1ACF.

Country allocation

The ICAO 24-bit address 7C1ACF 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 2 distinct

Callsign Airline Flights Last seen
TMN1 Tasman Cargo Airlines 5 2026-04-14
TMN2 - 2 2026-04-13

Recent flights last 7

DateFlightRouteTakeoffLandingDuration
2026-04-14 TMN1 AKL → SYD Apr 14, 10:30 UTCApr 14, 11:05 UTC35m
2026-04-14 TMN1 AKL → SYD Apr 14, 08:05 UTCApr 14, 08:30 UTC25m
2026-04-14 TMN1 AKL → SYD Apr 14, 05:15 UTCApr 14, 06:15 UTC1h 0m
2026-04-13 TMN2 - Apr 13, 18:30 UTCApr 13, 19:35 UTC1h 5m
2026-04-13 TMN2 SYD → AKL Apr 13, 13:10 UTCApr 13, 15:35 UTC2h 25m
2026-04-13 TMN1 AKL → SYD Apr 13, 08:20 UTCApr 13, 11:05 UTC2h 45m
2026-04-13 TMN1 AKL → SYD Apr 13, 08:00 UTCApr 13, 08:15 UTC15m

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

Mode-S 7C1ACF frequently asked

What is Mode-S code 7C1ACF?
7C1ACF is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-FKX.
Where is Mode-S 7C1ACF registered?
Mode-S code 7C1ACF is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C1ACF 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 7C1ACF, octal 37015317, decimal 8,133,327.
What flights does 7C1ACF operate?
Mode-S 7C1ACF has broadcast 2 distinct callsigns, including TMN1, TMN2.