sensors Mode-S transponder

7C7A6E

ICAO 24-bit transponder address · allocated to Australia

Currently assigned to VH-YGW · CESSNA 172 Skyhawk · operated by SINGAPORE FLYING COLLEGE PTE LTD

Hex
7C7A6E
Octal
37075156
Decimal
8,157,806
Country
AU
Tail
VH-YGW
Type
C172
No current signal · last broadcast 15h ago
Flights observed
7
Distinct callsigns
1
Country
AU
Last broadcast
15h ago

Last known position

Most recent position reported by Mode-S 7C7A6E.

Country allocation

The ICAO 24-bit address 7C7A6E 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
YGW - 7 2026-04-14

Recent flights last 7

DateFlightRouteTakeoffLandingDuration
2026-04-14 YGW JAD → JAD Apr 14, 10:55 UTCApr 14, 11:05 UTC10m
2026-04-14 YGW - Apr 14, 09:10 UTCApr 14, 09:20 UTC10m
2026-04-14 YGW - Apr 14, 08:40 UTCApr 14, 09:05 UTC25m
2026-04-14 YGW JAD → JAD Apr 14, 05:45 UTCApr 14, 06:20 UTC35m
2026-04-13 YGW - Apr 13, 08:20 UTCApr 13, 09:05 UTC45m
2026-04-13 YGW - Apr 13, 07:55 UTCApr 13, 08:15 UTC20m
2026-04-13 YGW JAD → JAD Apr 13, 02:00 UTCApr 13, 03:00 UTC1h 0m

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

Mode-S 7C7A6E frequently asked

What is Mode-S code 7C7A6E?
7C7A6E is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-YGW.
Where is Mode-S 7C7A6E registered?
Mode-S code 7C7A6E is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C7A6E broadcasting right now?
No active broadcast right now. Last signal was 15h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7C7A6E, octal 37075156, decimal 8,157,806.
What flights does 7C7A6E operate?
Mode-S 7C7A6E has broadcast 1 distinct callsign, including YGW.