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sensors Mode-S transponder

7C0ADC

ICAO 24-bit transponder address · allocated to Australia

Currently assigned to VH-CFI · CESSNA 172 Skyhawk · operated by THE SCOUT ASSOCIATION OF AUSTRALIA, NEW SOUTH WALES BRANCH

Hex
7C0ADC
Octal
37005334
Decimal
8,129,244
Country
AU
Tail
VH-CFI
Type
C172
Broadcasting now · callsign CFI · 4,000 ft
Flights observed
8
Distinct callsigns
1
Country
AU
Last broadcast
18h ago

Current position

7C0ADC is currently broadcasting. Map zoomed to live position.

Country allocation

The ICAO 24-bit address 7C0ADC 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
CFI - 8 2026-04-14

Recent flights last 8

DateFlightRouteTakeoffLandingDuration
2026-04-14 CFI CDU → CDU Apr 14, 05:40 UTCApr 14, 06:30 UTC50m
2026-04-13 CFI - Apr 13, 23:25 UTCApr 13, 23:40 UTC15m
2026-04-13 CFI CDU → CDU Apr 13, 05:50 UTCApr 13, 06:30 UTC40m
2026-04-13 CFI - Apr 13, 04:20 UTCApr 13, 04:35 UTC15m
2026-04-13 CFI - Apr 13, 03:55 UTCApr 13, 04:15 UTC20m
2026-04-13 CFI - Apr 13, 02:25 UTCApr 13, 03:00 UTC35m
2026-04-13 CFI - Apr 13, 00:20 UTCApr 13, 00:35 UTC15m
2026-04-13 CFI CDU → CDU Apr 13, 00:00 UTCApr 13, 00:35 UTC35m

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

Mode-S 7C0ADC frequently asked

What is Mode-S code 7C0ADC?
7C0ADC is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-CFI.
Where is Mode-S 7C0ADC registered?
Mode-S code 7C0ADC is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C0ADC broadcasting right now?
Yes. Mode-S 7C0ADC is currently airborne.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7C0ADC, octal 37005334, decimal 8,129,244.
What flights does 7C0ADC operate?
Mode-S 7C0ADC has broadcast 1 distinct callsign, including CFI.