Apparatus

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sensors Mode-S transponder

7C7A5D

ICAO 24-bit transponder address · allocated to Australia

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

Hex
7C7A5D
Octal
37075135
Decimal
8,157,789
Country
AU
Tail
VH-YGF
Type
C172
No current signal · last broadcast 2d ago
Flights observed
87
Distinct callsigns
1
Country
AU
Last broadcast
2d ago

Last known position

Most recent position reported by Mode-S 7C7A5D.

Country allocation

The ICAO 24-bit address 7C7A5D 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
YGF - 87 2026-05-27

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-05-27 YGF TMW → TMW May 27, 22:55 UTCMay 27, 23:45 UTC50m
2026-05-26 YGF TMW → TMW May 26, 21:59 UTCMay 27, 00:19 UTC2h 20m
2026-05-26 YGF TMW → TMW May 26, 04:35 UTCMay 26, 05:49 UTC1h 15m
2026-05-26 YGF - May 26, 01:40 UTCMay 26, 02:10 UTC30m
2026-05-26 YGF - May 26, 00:19 UTCMay 26, 01:05 UTC45m
2026-05-25 YGF TMW → TMW May 25, 08:35 UTCMay 25, 09:10 UTC35m
2026-05-25 YGF TMW → TMW May 25, 04:35 UTCMay 25, 05:10 UTC35m
2026-05-25 YGF TMW → TMW May 25, 02:45 UTCMay 25, 03:30 UTC45m
2026-05-22 YGF TMW → TMW May 22, 08:50 UTCMay 22, 09:20 UTC30m
2026-05-22 YGF TMW → TMW May 22, 03:35 UTCMay 22, 04:40 UTC1h 5m
2026-05-21 YGF TMW → TMW May 21, 22:15 UTCMay 21, 22:55 UTC40m
2026-05-21 YGF TMW → TMW May 21, 06:00 UTCMay 21, 07:10 UTC1h 10m
2026-05-21 YGF TMW → TMW May 21, 03:40 UTCMay 21, 04:10 UTC30m
2026-05-20 YGF TMW → TMW May 20, 22:20 UTCMay 20, 23:00 UTC40m
2026-05-20 YGF TMW → TMW May 20, 04:20 UTCMay 20, 05:20 UTC1h 1m
2026-05-20 YGF - May 20, 00:45 UTCMay 20, 02:55 UTC2h 10m
2026-05-19 YGF TMW → TMW May 19, 23:05 UTCMay 20, 00:00 UTC55m
2026-05-18 YGF TMW → TMW May 18, 01:00 UTCMay 18, 01:55 UTC55m
2026-05-17 YGF TMW → TMW May 17, 22:05 UTCMay 17, 22:50 UTC45m
2026-05-15 YGF TMW → TMW May 15, 09:25 UTCMay 15, 09:55 UTC30m
2026-05-15 YGF - May 15, 04:55 UTCMay 15, 05:30 UTC35m
2026-05-15 YGF TMW → TMW May 15, 02:45 UTCMay 15, 04:00 UTC1h 15m
2026-05-15 YGF - May 15, 00:30 UTCMay 15, 01:20 UTC50m
2026-05-14 YGF TMW → TMW May 14, 22:25 UTCMay 14, 23:40 UTC1h 15m
2026-05-14 YGF TMW → TMW May 14, 04:10 UTCMay 14, 05:20 UTC1h 10m
2026-05-14 YGF TMW → TMW May 14, 00:45 UTCMay 14, 01:40 UTC55m
2026-05-13 YGF TMW → TMW May 13, 21:50 UTCMay 13, 23:00 UTC1h 10m
2026-05-13 YGF TMW → TMW May 13, 11:25 UTCMay 13, 12:05 UTC40m
2026-05-13 YGF TMW → TMW May 13, 10:10 UTCMay 13, 10:25 UTC15m
2026-05-13 YGF TMW → TMW May 13, 09:15 UTCMay 13, 09:45 UTC30m
2026-05-13 YGF TMW → TMW May 13, 04:45 UTCMay 13, 05:45 UTC1h 0m
2026-05-13 YGF - May 13, 03:25 UTCMay 13, 03:50 UTC25m
2026-05-13 YGF TMW → GUH May 13, 02:25 UTCMay 13, 02:55 UTC30m
2026-05-12 YGF TMW → TMW May 12, 22:15 UTCMay 13, 00:05 UTC1h 50m
2026-05-07 YGF TMW → TMW May 7, 22:25 UTCMay 7, 23:09 UTC44m
2026-05-07 YGF TMW → TMW May 7, 13:35 UTCMay 7, 13:55 UTC20m
2026-05-07 YGF TMW → TMW May 7, 12:15 UTCMay 7, 12:45 UTC30m
2026-05-07 YGF TMW → TMW May 7, 10:55 UTCMay 7, 11:25 UTC30m
2026-05-07 YGF TMW → TMW May 7, 01:55 UTCMay 7, 02:30 UTC35m
2026-05-06 YGF TMW → TMW May 6, 22:10 UTCMay 6, 23:25 UTC1h 15m
2026-05-06 YGF TMW → TMW May 6, 10:40 UTCMay 6, 10:50 UTC10m
2026-05-06 YGF TMW → TMW May 6, 10:15 UTCMay 6, 10:35 UTC20m
2026-05-06 YGF TMW → TMW May 6, 06:00 UTCMay 6, 06:45 UTC45m
2026-05-06 YGF TMW → TMW May 6, 01:20 UTCMay 6, 03:25 UTC2h 5m
2026-05-05 YGF TMW → TMW May 5, 23:00 UTCMay 5, 23:35 UTC35m
2026-05-05 YGF TMW → TMW May 5, 07:15 UTCMay 5, 09:10 UTC1h 55m
2026-05-04 YGF TMW → TMW May 4, 02:15 UTCMay 4, 03:00 UTC45m
2026-05-04 YGF TMW → TMW May 4, 00:30 UTCMay 4, 01:00 UTC30m
2026-05-01 YGF TMW → TMW May 1, 05:15 UTCMay 1, 06:00 UTC45m
2026-05-01 YGF TMW → TMW May 1, 02:05 UTCMay 1, 04:05 UTC2h 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-YGF page for operator, model, and routing details .

Mode-S 7C7A5D frequently asked

What is Mode-S code 7C7A5D?
7C7A5D is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-YGF.
Where is Mode-S 7C7A5D registered?
Mode-S code 7C7A5D is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C7A5D 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 7C7A5D, octal 37075135, decimal 8,157,789.
What flights does 7C7A5D operate?
Mode-S 7C7A5D has broadcast 1 distinct callsign, including YGF.