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sensors Mode-S transponder

7C7BA9

ICAO 24-bit transponder address · allocated to Australia

Currently assigned to VH-YPN · DIAMOND DA-40 Club Star · operated by AUSTRALIAN INTERNATIONAL AVIATION COLLEGE PTY LTD

Hex
7C7BA9
Octal
37075651
Decimal
8,158,121
Country
AU
Tail
VH-YPN
Type
DA40
No current signal · last broadcast Jul 25, 05:30 UTC
Flights observed
174
Distinct callsigns
1
Country
AU
Last broadcast
Jul 25, 05:30 UTC

Last known position

Most recent position reported by Mode-S 7C7BA9.

Country allocation

The ICAO 24-bit address 7C7BA9 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
YPN - 174 2026-07-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 YPN - Jul 25, 04:45 UTCJul 25, 05:30 UTC45m
2026-07-25 YPN - Jul 25, 03:30 UTCJul 25, 03:40 UTC10m
2026-07-25 YPN - Jul 25, 01:05 UTCJul 25, 01:35 UTC30m
2026-07-24 YPN - Jul 24, 05:25 UTCJul 24, 06:00 UTC35m
2026-07-24 YPN - Jul 24, 03:20 UTCJul 24, 04:35 UTC1h 15m
2026-07-24 YPN - Jul 24, 01:00 UTCJul 24, 01:55 UTC55m
2026-07-23 YPN - Jul 23, 23:30 UTCJul 23, 23:55 UTC25m
2026-07-23 YPN - Jul 23, 06:15 UTCJul 23, 06:30 UTC15m
2026-07-23 YPN - Jul 23, 05:25 UTCJul 23, 05:40 UTC15m
2026-07-23 YPN - Jul 23, 03:40 UTCJul 23, 04:00 UTC20m
2026-07-23 YPN - Jul 23, 02:05 UTCJul 23, 02:30 UTC25m
2026-07-22 YPN - Jul 22, 23:40 UTCJul 23, 00:35 UTC55m
2026-07-22 YPN - Jul 22, 04:40 UTCJul 22, 04:55 UTC15m
2026-07-22 YPN - Jul 22, 03:30 UTCJul 22, 03:40 UTC10m
2026-07-22 YPN - Jul 22, 01:40 UTCJul 22, 02:20 UTC40m
2026-07-21 YPN - Jul 21, 23:45 UTCJul 22, 00:00 UTC15m
2026-07-21 YPN - Jul 21, 05:20 UTCJul 21, 05:45 UTC25m
2026-07-21 YPN - Jul 21, 03:20 UTCJul 21, 03:30 UTC10m
2026-07-21 YPN - Jul 21, 01:55 UTCJul 21, 02:45 UTC50m
2026-07-20 YPN - Jul 20, 23:20 UTCJul 20, 23:30 UTC10m
2026-07-20 YPN - Jul 20, 04:15 UTCJul 20, 04:50 UTC35m
2026-07-20 YPN - Jul 20, 02:40 UTCJul 20, 03:05 UTC25m
2026-07-19 YPN PQQ → PQQ Jul 19, 22:45 UTCJul 19, 23:30 UTC45m
2026-07-17 YPN PQQ → PQQ Jul 17, 05:04 UTCJul 17, 06:00 UTC55m
2026-07-16 YPN PQQ → PQQ Jul 16, 00:15 UTCJul 16, 01:15 UTC1h 0m
2026-07-14 YPN PQQ → PQQ Jul 14, 23:50 UTCJul 15, 00:55 UTC1h 5m
2026-07-14 YPN PQQ → PQQ Jul 14, 22:20 UTCJul 14, 23:00 UTC39m
2026-07-14 YPN - Jul 14, 10:10 UTCJul 14, 11:00 UTC50m
2026-07-14 YPN - Jul 14, 08:25 UTCJul 14, 09:15 UTC50m
2026-07-14 YPN - Jul 14, 06:35 UTCJul 14, 07:00 UTC25m
2026-07-14 YPN - Jul 14, 05:35 UTCJul 14, 05:45 UTC10m
2026-07-14 YPN - Jul 14, 04:05 UTCJul 14, 04:40 UTC35m
2026-07-14 YPN - Jul 14, 02:35 UTCJul 14, 02:45 UTC10m
2026-07-14 YPN - Jul 14, 00:10 UTCJul 14, 00:40 UTC30m
2026-07-13 YPN - Jul 13, 10:30 UTCJul 13, 11:00 UTC30m
2026-07-13 YPN - Jul 13, 08:35 UTCJul 13, 09:30 UTC55m
2026-07-13 YPN - Jul 13, 06:15 UTCJul 13, 06:40 UTC25m
2026-07-13 YPN - Jul 13, 05:20 UTCJul 13, 05:31 UTC10m
2026-07-13 YPN - Jul 13, 03:55 UTCJul 13, 04:15 UTC20m
2026-07-13 YPN - Jul 13, 02:30 UTCJul 13, 03:05 UTC35m
2026-07-13 YPN - Jul 13, 00:05 UTCJul 13, 00:35 UTC30m
2026-07-12 YPN - Jul 12, 22:30 UTCJul 12, 23:05 UTC35m
2026-07-11 YPN - Jul 11, 04:40 UTCJul 11, 05:31 UTC50m
2026-07-11 YPN - Jul 11, 02:55 UTCJul 11, 03:05 UTC10m
2026-07-11 YPN - Jul 11, 01:35 UTCJul 11, 01:55 UTC20m
2026-07-10 YPN - Jul 10, 23:45 UTCJul 11, 00:55 UTC1h 10m
2026-07-10 YPN - Jul 10, 22:55 UTCJul 10, 23:10 UTC15m
2026-07-10 YPN - Jul 10, 04:05 UTCJul 10, 05:10 UTC1h 5m
2026-07-10 YPN - Jul 10, 02:50 UTCJul 10, 03:15 UTC25m
2026-07-10 YPN - Jul 10, 00:15 UTCJul 10, 01:15 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-YPN page for operator, model, and routing details .

Mode-S 7C7BA9 frequently asked

What is Mode-S code 7C7BA9?
7C7BA9 is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-YPN.
Where is Mode-S 7C7BA9 registered?
Mode-S code 7C7BA9 is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C7BA9 broadcasting right now?
No active broadcast right now. Last signal was Jul 25, 05:30 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7C7BA9, octal 37075651, decimal 8,158,121.
What flights does 7C7BA9 operate?
Mode-S 7C7BA9 has broadcast 1 distinct callsign, including YPN.