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sensors Mode-S transponder

7C7BD9

ICAO 24-bit transponder address · allocated to Australia

Currently assigned to VH-YQZ · DIAMOND DA-42 Guardian · operated by FLIGHT TRAINING ADELAIDE PTY LTD

Hex
7C7BD9
Octal
37075731
Decimal
8,158,169
Country
AU
Tail
VH-YQZ
Type
DA42
Transponder active on ground
Flights observed
121
Distinct callsigns
1
Country
AU
Last broadcast
3d ago

Last known position

Most recent position reported by Mode-S 7C7BD9.

Country allocation

The ICAO 24-bit address 7C7BD9 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
YQZ - 121 2026-07-10

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-10 YQZ - Jul 10, 08:35 UTCJul 10, 10:25 UTC1h 50m
2026-07-10 YQZ - Jul 10, 06:25 UTCJul 10, 07:10 UTC45m
2026-07-10 YQZ - Jul 10, 04:20 UTCJul 10, 05:10 UTC50m
2026-07-10 YQZ - Jul 10, 01:30 UTCJul 10, 02:25 UTC55m
2026-07-09 YQZ - Jul 9, 22:10 UTCJul 9, 23:05 UTC55m
2026-07-09 YQZ - Jul 9, 06:20 UTCJul 9, 07:05 UTC45m
2026-07-09 YQZ - Jul 9, 04:20 UTCJul 9, 05:00 UTC40m
2026-07-09 YQZ - Jul 9, 02:55 UTCJul 9, 03:15 UTC20m
2026-07-09 YQZ - Jul 9, 00:50 UTCJul 9, 01:55 UTC1h 5m
2026-07-08 YQZ - Jul 8, 22:40 UTCJul 8, 23:45 UTC1h 5m
2026-07-08 YQZ - Jul 8, 07:10 UTCJul 8, 08:45 UTC1h 35m
2026-07-08 YQZ - Jul 8, 03:55 UTCJul 8, 05:30 UTC1h 35m
2026-07-08 YQZ - Jul 8, 02:35 UTCJul 8, 03:05 UTC30m
2026-07-07 YQZ - Jul 7, 22:05 UTCJul 7, 23:00 UTC55m
2026-07-07 YQZ - Jul 7, 09:50 UTCJul 7, 10:25 UTC35m
2026-07-07 YQZ - Jul 7, 07:50 UTCJul 7, 09:00 UTC1h 10m
2026-07-07 YQZ - Jul 7, 05:55 UTCJul 7, 06:40 UTC45m
2026-07-07 YQZ - Jul 7, 03:45 UTCJul 7, 04:50 UTC1h 5m
2026-07-07 YQZ - Jul 7, 01:45 UTCJul 7, 02:55 UTC1h 10m
2026-07-06 YQZ - Jul 6, 09:35 UTCJul 6, 10:20 UTC45m
2026-07-06 YQZ - Jul 6, 07:45 UTCJul 6, 09:05 UTC1h 20m
2026-07-06 YQZ - Jul 6, 05:40 UTCJul 6, 06:20 UTC40m
2026-07-06 YQZ - Jul 6, 04:15 UTCJul 6, 04:50 UTC35m
2026-07-05 YQZ - Jul 5, 21:50 UTCJul 5, 22:45 UTC55m
2026-07-05 YQZ - Jul 5, 09:10 UTCJul 5, 09:20 UTC10m
2026-07-05 YQZ - Jul 5, 07:30 UTCJul 5, 09:05 UTC1h 35m
2026-07-05 YQZ - Jul 5, 05:35 UTCJul 5, 06:15 UTC40m
2026-07-05 YQZ - Jul 5, 04:15 UTCJul 5, 04:50 UTC35m
2026-07-05 YQZ - Jul 5, 01:40 UTCJul 5, 02:40 UTC1h 0m
2026-07-04 YQZ - Jul 4, 23:20 UTCJul 5, 00:05 UTC45m
2026-07-04 YQZ - Jul 4, 06:15 UTCJul 4, 07:00 UTC45m
2026-07-04 YQZ - Jul 4, 05:10 UTCJul 4, 05:40 UTC30m
2026-07-03 YQZ - Jul 3, 06:15 UTCJul 3, 07:10 UTC55m
2026-07-03 YQZ - Jul 3, 04:35 UTCJul 3, 05:25 UTC50m
2026-07-03 YQZ - Jul 3, 02:55 UTCJul 3, 03:40 UTC45m
2026-07-03 YQZ - Jul 3, 01:45 UTCJul 3, 02:05 UTC20m
2026-07-02 YQZ - Jul 2, 23:35 UTCJul 3, 00:10 UTC35m
2026-07-02 YQZ - Jul 2, 05:05 UTCJul 2, 06:35 UTC1h 30m
2026-06-30 YQZ - Jun 30, 21:55 UTCJun 30, 22:50 UTC55m
2026-06-30 YQZ - Jun 30, 07:25 UTCJun 30, 08:00 UTC35m
2026-06-30 YQZ - Jun 30, 05:35 UTCJun 30, 06:15 UTC40m
2026-06-30 YQZ - Jun 30, 03:00 UTCJun 30, 03:25 UTC25m
2026-06-30 YQZ - Jun 30, 02:30 UTCJun 30, 02:40 UTC10m
2026-06-29 YQZ - Jun 29, 02:20 UTCJun 29, 03:34 UTC1h 15m
2026-06-28 YQZ - Jun 28, 23:34 UTCJun 29, 00:24 UTC50m
2026-06-28 YQZ - Jun 28, 04:29 UTCJun 28, 05:34 UTC1h 5m
2026-06-28 YQZ - Jun 28, 01:34 UTCJun 28, 02:49 UTC1h 15m
2026-06-27 YQZ - Jun 27, 06:54 UTCJun 27, 07:24 UTC30m
2026-06-27 YQZ - Jun 27, 01:59 UTCJun 27, 02:25 UTC25m
2026-06-26 YQZ - Jun 26, 06:39 UTCJun 26, 07:10 UTC30m

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

Mode-S 7C7BD9 frequently asked

What is Mode-S code 7C7BD9?
7C7BD9 is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-YQZ.
Where is Mode-S 7C7BD9 registered?
Mode-S code 7C7BD9 is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C7BD9 broadcasting right now?
Mode-S 7C7BD9 is currently broadcasting from the ground.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7C7BD9, octal 37075731, decimal 8,158,169.
What flights does 7C7BD9 operate?
Mode-S 7C7BD9 has broadcast 1 distinct callsign, including YQZ.