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 14d ago
Flights observed
140
Distinct callsigns
1
Country
AU
Last broadcast
14d 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 - 140 2026-06-30

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-06-30 YGF TMW → TMW Jun 30, 03:30 UTCJun 30, 04:05 UTC35m
2026-06-30 YGF TMW → TMW Jun 30, 01:09 UTCJun 30, 02:10 UTC1h 0m
2026-06-29 YGF TMW → TMW Jun 29, 06:40 UTCJun 29, 07:30 UTC50m
2026-06-29 YGF TMW → TMW Jun 29, 03:29 UTCJun 29, 04:20 UTC50m
2026-06-29 YGF TMW → TMW Jun 29, 01:14 UTCJun 29, 02:14 UTC1h 0m
2026-06-28 YGF TMW → TMW Jun 28, 23:04 UTCJun 28, 23:44 UTC40m
2026-06-26 YGF TMW → TMW Jun 26, 03:24 UTCJun 26, 04:10 UTC45m
2026-06-26 YGF TMW → TMW Jun 26, 00:50 UTCJun 26, 01:24 UTC35m
2026-06-25 YGF TMW → TMW Jun 25, 22:54 UTCJun 25, 23:34 UTC40m
2026-06-25 YGF TMW → TMW Jun 25, 09:05 UTCJun 25, 09:40 UTC35m
2026-06-25 YGF TMW → TMW Jun 25, 06:00 UTCJun 25, 06:44 UTC45m
2026-06-25 YGF TMW → TMW Jun 25, 03:24 UTCJun 25, 03:59 UTC35m
2026-06-25 YGF TMW → TMW Jun 25, 01:04 UTCJun 25, 01:44 UTC40m
2026-06-24 YGF TMW → TMW Jun 24, 23:10 UTCJun 24, 23:50 UTC40m
2026-06-24 YGF TMW → TMW Jun 24, 09:59 UTCJun 24, 10:39 UTC40m
2026-06-24 YGF TMW → TMW Jun 24, 08:14 UTCJun 24, 09:00 UTC45m
2026-06-24 YGF TMW → TMW Jun 24, 03:19 UTCJun 24, 04:20 UTC1h 0m
2026-06-24 YGF TMW → TMW Jun 24, 00:59 UTCJun 24, 01:39 UTC40m
2026-06-23 YGF TMW → TMW Jun 23, 22:05 UTCJun 23, 22:40 UTC35m
2026-06-23 YGF TMW → TMW Jun 23, 00:50 UTCJun 23, 01:40 UTC50m
2026-06-22 YGF TMW → TMW Jun 22, 22:24 UTCJun 22, 23:29 UTC1h 5m
2026-06-18 YGF TMW → TMW Jun 18, 01:45 UTCJun 18, 01:55 UTC10m
2026-06-17 YGF - Jun 17, 22:50 UTCJun 17, 23:10 UTC20m
2026-06-17 YGF TMW → TMW Jun 17, 22:00 UTCJun 17, 22:10 UTC10m
2026-06-16 YGF TMW → TMW Jun 16, 22:15 UTCJun 16, 23:05 UTC50m
2026-06-16 YGF TMW → TMW Jun 16, 04:25 UTCJun 16, 05:55 UTC1h 30m
2026-06-16 YGF TMW → TMW Jun 16, 00:50 UTCJun 16, 03:30 UTC2h 40m
2026-06-15 YGF TMW → TMW Jun 15, 22:45 UTCJun 15, 23:30 UTC45m
2026-06-14 YGF TMW → TMW Jun 14, 22:50 UTCJun 15, 01:00 UTC2h 10m
2026-06-12 YGF - Jun 12, 01:25 UTCJun 12, 02:35 UTC1h 10m
2026-06-12 YGF - Jun 12, 00:05 UTCJun 12, 00:30 UTC25m
2026-06-11 YGF - Jun 11, 22:20 UTCJun 11, 23:25 UTC1h 5m
2026-06-11 YGF TMW → TMW Jun 11, 06:30 UTCJun 11, 08:25 UTC1h 55m
2026-06-11 YGF TMW → TMW Jun 11, 02:15 UTCJun 11, 04:25 UTC2h 10m
2026-06-10 YGF TMW → TMW Jun 10, 08:10 UTCJun 10, 09:35 UTC1h 25m
2026-06-10 YGF TMW → TMW Jun 10, 05:20 UTCJun 10, 06:45 UTC1h 25m
2026-06-10 YGF TMW → TMW Jun 10, 02:25 UTCJun 10, 03:45 UTC1h 20m
2026-06-10 YGF TMW → TMW Jun 10, 00:40 UTCJun 10, 01:20 UTC40m
2026-06-09 YGF TMW → TMW Jun 9, 22:25 UTCJun 9, 23:15 UTC50m
2026-06-09 YGF TMW → TMW Jun 9, 06:20 UTCJun 9, 07:55 UTC1h 35m
2026-06-09 YGF TMW → TMW Jun 9, 02:30 UTCJun 9, 04:45 UTC2h 15m
2026-06-08 YGF TMW → TMW Jun 8, 03:50 UTCJun 8, 04:30 UTC40m
2026-06-08 YGF TMW → TMW Jun 8, 00:10 UTCJun 8, 00:55 UTC45m
2026-06-07 YGF TMW → TMW Jun 7, 22:05 UTCJun 7, 22:45 UTC40m
2026-06-04 YGF TMW → TMW Jun 4, 22:35 UTCJun 4, 23:20 UTC45m
2026-06-04 YGF TMW → TMW Jun 4, 01:55 UTCJun 4, 03:55 UTC2h 0m
2026-06-03 YGF TMW → TMW Jun 3, 22:20 UTCJun 4, 00:10 UTC1h 50m
2026-06-03 YGF TMW → TMW Jun 3, 06:40 UTCJun 3, 08:35 UTC1h 55m
2026-06-03 YGF TMW → TMW Jun 3, 02:20 UTCJun 3, 04:40 UTC2h 20m
2026-06-02 YGF TMW → TMW Jun 2, 22:50 UTCJun 3, 00:35 UTC1h 45m

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 14d 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.