Apparatus

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sensors Mode-S transponder

7C7AED

ICAO 24-bit transponder address · allocated to Australia

Currently assigned to VH-YKF · DIAMOND DA-20 · operated by AUSTRALIAN INTERNATIONAL AVIATION COLLEGE PTY LTD

Hex
7C7AED
Octal
37075355
Decimal
8,157,933
Country
AU
Tail
VH-YKF
Type
DV20
No current signal · last broadcast 2d ago
Flights observed
22
Distinct callsigns
1
Country
AU
Last broadcast
2d ago

Last known position

Most recent position reported by Mode-S 7C7AED.

Country allocation

The ICAO 24-bit address 7C7AED 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
YKF - 22 2026-06-04

Recent flights last 22

DateFlightRouteTakeoffLandingDuration
2026-06-04 YKF - Jun 4, 02:00 UTCJun 4, 02:55 UTC55m
2026-06-04 YKF PQQ → PQQ Jun 4, 00:30 UTCJun 4, 01:30 UTC1h 0m
2026-06-03 YKF PQQ → PQQ Jun 3, 04:30 UTCJun 3, 05:20 UTC50m
2026-06-03 YKF PQQ → PQQ Jun 3, 00:50 UTCJun 3, 01:35 UTC45m
2026-05-19 YKF PQQ → PQQ May 19, 22:40 UTCMay 19, 23:30 UTC50m
2026-05-06 YKF PQQ → PQQ May 6, 02:25 UTCMay 6, 03:10 UTC45m
2026-05-04 YKF PQQ → PQQ May 4, 04:00 UTCMay 4, 04:44 UTC45m
2026-04-30 YKF - Apr 30, 01:30 UTCApr 30, 02:00 UTC30m
2026-04-30 YKF PQQ → PQQ Apr 30, 00:10 UTCApr 30, 00:45 UTC35m
2026-04-29 YKF PQQ → PQQ Apr 29, 04:25 UTCApr 29, 05:20 UTC55m
2026-04-29 YKF PQQ → PQQ Apr 29, 02:15 UTCApr 29, 03:10 UTC55m
2026-04-27 YKF PQQ → PQQ Apr 27, 05:00 UTCApr 27, 05:50 UTC50m
2026-04-27 YKF PQQ → PQQ Apr 27, 03:40 UTCApr 27, 04:40 UTC1h 0m
2026-04-24 YKF PQQ → PQQ Apr 24, 05:10 UTCApr 24, 06:05 UTC55m
2026-04-24 YKF PQQ → PQQ Apr 24, 03:05 UTCApr 24, 04:00 UTC55m
2026-04-23 YKF PQQ → PQQ Apr 23, 04:10 UTCApr 23, 05:10 UTC1h 0m
2026-04-22 YKF - Apr 22, 05:50 UTCApr 22, 06:30 UTC40m
2026-04-22 YKF PQQ → PQQ Apr 22, 04:20 UTCApr 22, 05:15 UTC55m
2026-04-22 YKF PQQ → PQQ Apr 22, 02:40 UTCApr 22, 03:30 UTC50m
2026-04-22 YKF PQQ → PQQ Apr 22, 00:45 UTCApr 22, 01:35 UTC50m
2026-04-21 YKF PQQ → PQQ Apr 21, 00:50 UTCApr 21, 01:40 UTC50m
2026-04-20 YKF PQQ → PQQ Apr 20, 01:10 UTCApr 20, 02:00 UTC50m

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

Mode-S 7C7AED frequently asked

What is Mode-S code 7C7AED?
7C7AED is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-YKF.
Where is Mode-S 7C7AED registered?
Mode-S code 7C7AED is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C7AED broadcasting right now?
No active broadcast right now. Last signal was 2d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7C7AED, octal 37075355, decimal 8,157,933.
What flights does 7C7AED operate?
Mode-S 7C7AED has broadcast 1 distinct callsign, including YKF.