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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
No current signal · last broadcast Jul 24, 12:05 UTC
Flights observed
158
Distinct callsigns
1
Country
AU
Last broadcast
Jul 24, 12:05 UTC

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 - 158 2026-07-24

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-24 YQZ - Jul 24, 11:40 UTCJul 24, 12:00 UTC20m
2026-07-24 YQZ - Jul 24, 09:30 UTCJul 24, 10:10 UTC40m
2026-07-24 YQZ - Jul 24, 06:50 UTCJul 24, 07:50 UTC1h 0m
2026-07-24 YQZ - Jul 24, 05:20 UTCJul 24, 06:20 UTC1h 0m
2026-07-24 YQZ - Jul 24, 02:50 UTCJul 24, 03:05 UTC15m
2026-07-24 YQZ - Jul 24, 00:00 UTCJul 24, 00:40 UTC40m
2026-07-23 YQZ - Jul 23, 22:15 UTCJul 23, 23:00 UTC45m
2026-07-23 YQZ - Jul 23, 08:20 UTCJul 23, 10:00 UTC1h 40m
2026-07-23 YQZ - Jul 23, 05:40 UTCJul 23, 06:35 UTC55m
2026-07-23 YQZ - Jul 23, 04:10 UTCJul 23, 05:10 UTC1h 0m
2026-07-23 YQZ - Jul 23, 01:55 UTCJul 23, 03:00 UTC1h 5m
2026-07-22 YQZ - Jul 22, 23:35 UTCJul 23, 00:55 UTC1h 20m
2026-07-20 YQZ - Jul 20, 05:15 UTCJul 20, 05:50 UTC35m
2026-07-20 YQZ - Jul 20, 03:20 UTCJul 20, 04:10 UTC50m
2026-07-20 YQZ - Jul 20, 01:25 UTCJul 20, 02:10 UTC45m
2026-07-19 YQZ - Jul 19, 23:20 UTCJul 20, 00:15 UTC55m
2026-07-19 YQZ - Jul 19, 07:50 UTCJul 19, 08:35 UTC45m
2026-07-19 YQZ - Jul 19, 04:35 UTCJul 19, 06:30 UTC1h 55m
2026-07-19 YQZ - Jul 19, 03:15 UTCJul 19, 03:40 UTC25m
2026-07-19 YQZ - Jul 19, 01:30 UTCJul 19, 02:25 UTC55m
2026-07-18 YQZ - Jul 18, 02:14 UTCJul 18, 04:15 UTC2h 1m
2026-07-17 YQZ - Jul 17, 22:05 UTCJul 18, 00:00 UTC1h 55m
2026-07-17 YQZ - Jul 17, 09:30 UTCJul 17, 11:04 UTC1h 35m
2026-07-17 YQZ - Jul 17, 05:10 UTCJul 17, 05:45 UTC35m
2026-07-17 YQZ - Jul 17, 03:39 UTCJul 17, 04:20 UTC40m
2026-07-17 YQZ - Jul 17, 00:20 UTCJul 17, 02:50 UTC2h 30m
2026-07-16 YQZ - Jul 16, 22:25 UTCJul 16, 23:10 UTC45m
2026-07-16 YQZ - Jul 16, 08:10 UTCJul 16, 08:45 UTC35m
2026-07-16 YQZ - Jul 16, 04:05 UTCJul 16, 05:10 UTC1h 5m
2026-07-16 YQZ - Jul 16, 02:00 UTCJul 16, 03:00 UTC1h 0m
2026-07-16 YQZ - Jul 16, 00:20 UTCJul 16, 00:55 UTC35m
2026-07-15 YQZ - Jul 15, 21:55 UTCJul 15, 23:05 UTC1h 10m
2026-07-15 YQZ - Jul 15, 08:10 UTCJul 15, 09:10 UTC1h 0m
2026-07-15 YQZ - Jul 15, 05:00 UTCJul 15, 06:55 UTC1h 55m
2026-07-14 YQZ - Jul 14, 06:35 UTCJul 14, 08:30 UTC1h 55m
2026-07-14 YQZ - Jul 14, 04:40 UTCJul 14, 05:25 UTC45m
2026-07-14 YQZ - Jul 14, 02:55 UTCJul 14, 03:20 UTC25m
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

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?
No active broadcast right now. Last signal was Jul 24, 12:05 UTC.
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.