Apparatus

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sensors Mode-S transponder

7C0FB3

ICAO 24-bit transponder address · allocated to Australia

Currently assigned to VH-DDX · PIPER PA-28-140/150/160/180 · operated by MELBOURNE FLIGHT ACADEMY PTY LTD

Hex
7C0FB3
Octal
37007663
Decimal
8,130,483
Country
AU
Tail
VH-DDX
Type
P28A
No current signal · last broadcast Jul 26, 05:50 UTC
Flights observed
83
Distinct callsigns
1
Country
AU
Last broadcast
Jul 26, 05:50 UTC

Last known position

Most recent position reported by Mode-S 7C0FB3.

Country allocation

The ICAO 24-bit address 7C0FB3 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
DDX - 83 2026-07-26

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 DDX MEB → MEB Jul 26, 04:25 UTCJul 26, 05:50 UTC1h 25m
2026-07-23 DDX MBW → MEB Jul 23, 05:15 UTCJul 23, 05:30 UTC15m
2026-07-21 DDX - Jul 21, 01:05 UTCJul 21, 02:15 UTC1h 10m
2026-07-20 DDX MBW → MBW Jul 20, 01:25 UTCJul 20, 02:10 UTC45m
2026-07-16 DDX MEB → MBW Jul 16, 05:15 UTCJul 16, 05:30 UTC15m
2026-07-10 DDX MEB → MEB Jul 10, 02:50 UTCJul 10, 03:45 UTC55m
2026-06-28 DDX MEB → MEB Jun 28, 05:45 UTCJun 28, 06:49 UTC1h 5m
2026-06-28 DDX - Jun 28, 04:59 UTCJun 28, 05:24 UTC25m
2026-06-28 DDX - Jun 28, 02:54 UTCJun 28, 04:29 UTC1h 35m
2026-06-26 DDX - Jun 26, 03:10 UTCJun 26, 07:05 UTC3h 55m
2026-06-25 DDX - Jun 25, 04:35 UTCJun 25, 06:25 UTC1h 50m
2026-06-25 DDX - Jun 25, 03:15 UTCJun 25, 03:44 UTC30m
2026-06-24 DDX - Jun 24, 04:15 UTCJun 24, 06:59 UTC2h 45m
2026-06-24 DDX - Jun 24, 01:04 UTCJun 24, 03:04 UTC2h 0m
2026-06-23 DDX - Jun 23, 06:04 UTCJun 23, 06:29 UTC25m
2026-06-22 DDX - Jun 22, 03:40 UTCJun 22, 05:24 UTC1h 45m
2026-06-21 DDX MEB → MEB Jun 21, 23:24 UTCJun 22, 00:24 UTC1h 0m
2026-06-19 DDX MEB → MEB Jun 19, 05:00 UTCJun 19, 06:39 UTC1h 40m
2026-06-16 DDX MEB → MEB Jun 16, 04:45 UTCJun 16, 06:20 UTC1h 35m
2026-06-14 DDX - Jun 14, 00:20 UTCJun 14, 02:00 UTC1h 40m
2026-06-13 DDX - Jun 13, 22:55 UTCJun 13, 23:50 UTC55m
2026-06-08 DDX MEB → MEB Jun 8, 00:15 UTCJun 8, 01:40 UTC1h 25m
2026-06-05 DDX - Jun 5, 04:20 UTCJun 5, 04:50 UTC30m
2026-06-05 DDX - Jun 5, 02:20 UTCJun 5, 03:15 UTC55m
2026-05-30 DDX - May 30, 03:20 UTCMay 30, 04:30 UTC1h 10m
2026-05-30 DDX - May 30, 00:35 UTCMay 30, 01:00 UTC25m
2026-05-29 DDX - May 29, 01:20 UTCMay 29, 02:00 UTC40m
2026-05-28 DDX - May 28, 06:20 UTCMay 28, 06:50 UTC30m
2026-05-28 DDX - May 28, 03:25 UTCMay 28, 04:40 UTC1h 15m
2026-05-28 DDX - May 28, 01:40 UTCMay 28, 02:00 UTC20m
2026-05-25 DDX - May 25, 02:10 UTCMay 25, 03:45 UTC1h 35m
2026-05-24 DDX - May 24, 04:15 UTCMay 24, 05:00 UTC45m
2026-05-24 DDX - May 24, 02:30 UTCMay 24, 03:25 UTC55m
2026-05-24 DDX - May 24, 00:20 UTCMay 24, 01:10 UTC50m
2026-05-23 DDX - May 23, 22:55 UTCMay 23, 23:35 UTC40m
2026-05-23 DDX - May 23, 07:00 UTCMay 23, 07:35 UTC35m
2026-05-23 DDX - May 23, 05:30 UTCMay 23, 06:10 UTC40m
2026-05-23 DDX - May 23, 00:40 UTCMay 23, 02:20 UTC1h 40m
2026-05-22 DDX - May 22, 03:55 UTCMay 22, 05:35 UTC1h 40m
2026-05-22 DDX - May 22, 00:40 UTCMay 22, 01:25 UTC45m
2026-05-21 DDX - May 21, 06:50 UTCMay 21, 07:15 UTC25m
2026-05-21 DDX - May 21, 05:10 UTCMay 21, 06:05 UTC55m
2026-05-20 DDX - May 20, 06:35 UTCMay 20, 07:15 UTC40m
2026-05-20 DDX - May 20, 05:35 UTCMay 20, 05:55 UTC20m
2026-05-20 DDX - May 20, 01:45 UTCMay 20, 02:45 UTC1h 0m
2026-05-16 DDX - May 16, 03:45 UTCMay 16, 04:40 UTC55m
2026-05-16 DDX - May 16, 01:15 UTCMay 16, 01:55 UTC40m
2026-05-15 DDX - May 15, 01:40 UTCMay 15, 02:25 UTC45m
2026-05-14 DDX - May 14, 03:55 UTCMay 14, 05:00 UTC1h 5m
2026-05-14 DDX - May 14, 01:25 UTCMay 14, 01:55 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-DDX page for operator, model, and routing details .

Mode-S 7C0FB3 frequently asked

What is Mode-S code 7C0FB3?
7C0FB3 is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-DDX.
Where is Mode-S 7C0FB3 registered?
Mode-S code 7C0FB3 is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C0FB3 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 05:50 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7C0FB3, octal 37007663, decimal 8,130,483.
What flights does 7C0FB3 operate?
Mode-S 7C0FB3 has broadcast 1 distinct callsign, including DDX.