Apparatus

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sensors Mode-S transponder

7C7CA2

ICAO 24-bit transponder address · allocated to Australia

Currently assigned to VH-YWK · VANS RV-12 · operated by KELLY, Gavin Paul

Hex
7C7CA2
Octal
37076242
Decimal
8,158,370
Country
AU
Tail
VH-YWK
Type
RV12
No current signal · last broadcast 1d ago
Flights observed
96
Distinct callsigns
2
Country
AU
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 7C7CA2.

Country allocation

The ICAO 24-bit address 7C7CA2 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
231166 - 94 2026-07-11
YWK - 2 2026-07-13

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-13 YWK - Jul 13, 02:55 UTCJul 13, 03:15 UTC20m
2026-07-12 YWK - Jul 12, 23:10 UTCJul 12, 23:25 UTC15m
2026-07-11 231166 - Jul 11, 00:05 UTCJul 11, 01:05 UTC1h 0m
2026-07-10 231166 - Jul 10, 23:05 UTCJul 10, 23:30 UTC25m
2026-07-10 231166 - Jul 10, 06:55 UTCJul 10, 07:15 UTC20m
2026-07-10 231166 - Jul 10, 05:10 UTCJul 10, 05:30 UTC20m
2026-07-10 231166 - Jul 10, 03:15 UTCJul 10, 03:40 UTC25m
2026-07-09 231166 - Jul 9, 00:35 UTCJul 9, 01:10 UTC35m
2026-07-08 231166 - Jul 8, 05:40 UTCJul 8, 07:15 UTC1h 35m
2026-07-07 231166 - Jul 7, 04:00 UTCJul 7, 06:10 UTC2h 10m
2026-07-05 231166 - Jul 5, 02:55 UTCJul 5, 03:50 UTC55m
2026-07-05 231166 - Jul 5, 01:25 UTCJul 5, 02:15 UTC50m
2026-07-04 231166 - Jul 4, 23:55 UTCJul 5, 00:35 UTC40m
2026-07-04 231166 - Jul 4, 05:55 UTCJul 4, 07:05 UTC1h 10m
2026-07-04 231166 - Jul 4, 04:05 UTCJul 4, 05:20 UTC1h 15m
2026-07-04 231166 - Jul 4, 00:40 UTCJul 4, 02:00 UTC1h 20m
2026-07-03 231166 - Jul 3, 22:55 UTCJul 4, 00:10 UTC1h 15m
2026-06-28 231166 - Jun 28, 04:10 UTCJun 28, 05:40 UTC1h 30m
2026-06-28 231166 - Jun 28, 02:10 UTCJun 28, 03:09 UTC1h 0m
2026-06-24 231166 - Jun 24, 03:55 UTCJun 24, 04:59 UTC1h 5m
2026-06-24 231166 - Jun 24, 02:24 UTCJun 24, 03:10 UTC45m
2026-06-23 231166 - Jun 23, 03:29 UTCJun 23, 04:14 UTC45m
2026-06-23 231166 - Jun 23, 00:35 UTCJun 23, 01:04 UTC30m
2026-06-21 231166 - Jun 21, 06:04 UTCJun 21, 06:50 UTC45m
2026-06-21 231166 - Jun 21, 04:04 UTCJun 21, 05:25 UTC1h 20m
2026-06-21 231166 - Jun 21, 02:35 UTCJun 21, 03:19 UTC45m
2026-06-21 231166 - Jun 21, 01:10 UTCJun 21, 01:45 UTC35m
2026-06-20 231166 - Jun 20, 23:14 UTCJun 21, 00:14 UTC1h 0m
2026-06-20 231166 - Jun 20, 00:19 UTCJun 20, 00:39 UTC20m
2026-06-14 231166 - Jun 14, 23:29 UTCJun 15, 00:24 UTC55m
2026-06-14 231166 - Jun 14, 06:15 UTCJun 14, 06:50 UTC35m
2026-06-14 231166 - Jun 14, 04:50 UTCJun 14, 05:25 UTC35m
2026-06-14 231166 - Jun 14, 02:05 UTCJun 14, 03:30 UTC1h 25m
2026-06-13 231166 - Jun 13, 23:00 UTCJun 13, 23:25 UTC25m
2026-06-11 231166 - Jun 11, 23:30 UTCJun 11, 23:55 UTC25m
2026-06-11 231166 - Jun 11, 05:55 UTCJun 11, 07:10 UTC1h 15m
2026-06-11 231166 - Jun 11, 03:30 UTCJun 11, 04:50 UTC1h 20m
2026-06-11 231166 - Jun 11, 00:05 UTCJun 11, 01:10 UTC1h 5m
2026-06-09 231166 - Jun 9, 23:55 UTCJun 10, 00:40 UTC45m
2026-06-06 231166 - Jun 6, 04:10 UTCJun 6, 04:55 UTC45m
2026-06-06 231166 - Jun 6, 02:00 UTCJun 6, 03:20 UTC1h 20m
2026-06-06 231166 - Jun 6, 00:05 UTCJun 6, 00:55 UTC50m
2026-05-30 231166 - May 30, 05:45 UTCMay 30, 05:55 UTC10m
2026-05-30 231166 - May 30, 03:25 UTCMay 30, 04:40 UTC1h 15m
2026-05-30 231166 - May 30, 02:30 UTCMay 30, 03:15 UTC45m
2026-05-30 231166 - May 30, 00:50 UTCMay 30, 01:35 UTC45m
2026-05-29 231166 - May 29, 23:15 UTCMay 29, 23:55 UTC40m
2026-05-25 231166 - May 25, 02:00 UTCMay 25, 02:55 UTC55m
2026-05-24 231166 - May 24, 05:05 UTCMay 24, 07:15 UTC2h 10m
2026-05-24 231166 - May 24, 03:50 UTCMay 24, 04:30 UTC40m

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

Mode-S 7C7CA2 frequently asked

What is Mode-S code 7C7CA2?
7C7CA2 is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-YWK.
Where is Mode-S 7C7CA2 registered?
Mode-S code 7C7CA2 is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C7CA2 broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7C7CA2, octal 37076242, decimal 8,158,370.
What flights does 7C7CA2 operate?
Mode-S 7C7CA2 has broadcast 2 distinct callsigns, including 231166, YWK.