Apparatus

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sensors Mode-S transponder

7C0139

ICAO 24-bit transponder address · allocated to Australia

Currently assigned to VH-AIZ · PIPER PA-28R-180/200/201 · operated by PHIL UNICOMB AVIATION PTY LTD

Hex
7C0139
Octal
37000471
Decimal
8,126,777
Country
AU
Tail
VH-AIZ
Type
P28R
No current signal · last broadcast Jul 26, 01:45 UTC
Flights observed
86
Distinct callsigns
1
Country
AU
Last broadcast
Jul 26, 01:45 UTC

Last known position

Most recent position reported by Mode-S 7C0139.

Country allocation

The ICAO 24-bit address 7C0139 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
AIZ - 85 2026-07-25

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-25 AIZ - Jul 25, 23:30 UTCJul 26, 01:45 UTC2h 15m
2026-07-24 AIZ - Jul 24, 04:15 UTCJul 24, 06:15 UTC2h 0m
2026-07-24 AIZ - Jul 24, 00:40 UTCJul 24, 00:55 UTC15m
2026-07-23 AIZ - Jul 23, 23:05 UTCJul 23, 23:30 UTC25m
2026-07-22 AIZ - Jul 22, 23:05 UTCJul 23, 00:10 UTC1h 5m
2026-07-18 AIZ CES → CES Jul 18, 03:05 UTCJul 18, 03:55 UTC50m
2026-07-18 AIZ - Jul 18, 02:05 UTCJul 18, 02:25 UTC20m
2026-07-15 AIZ - Jul 15, 09:25 UTCJul 15, 10:05 UTC40m
2026-07-15 AIZ - Jul 15, 07:50 UTCJul 15, 08:35 UTC45m
2026-07-14 AIZ - Jul 14, 04:20 UTCJul 14, 05:40 UTC1h 20m
2026-07-13 AIZ - Jul 13, 03:10 UTCJul 13, 04:10 UTC1h 0m
2026-07-10 AIZ - Jul 10, 00:55 UTCJul 10, 01:50 UTC55m
2026-07-08 AIZ - Jul 8, 23:25 UTCJul 9, 00:55 UTC1h 30m
2026-07-03 AIZ - Jul 3, 22:55 UTCJul 4, 00:40 UTC1h 45m
2026-07-01 AIZ CES → CES Jul 1, 05:00 UTCJul 1, 05:20 UTC20m
2026-07-01 AIZ - Jul 1, 03:05 UTCJul 1, 03:40 UTC35m
2026-07-01 AIZ - Jul 1, 01:55 UTCJul 1, 02:05 UTC10m
2026-07-01 AIZ - Jul 1, 00:40 UTCJul 1, 00:50 UTC10m
2026-06-28 AIZ CES → CES Jun 28, 02:54 UTCJun 28, 03:40 UTC45m
2026-06-24 AIZ - Jun 24, 06:45 UTCJun 24, 08:20 UTC1h 35m
2026-06-24 AIZ - Jun 24, 04:55 UTCJun 24, 06:10 UTC1h 15m
2026-06-24 AIZ - Jun 24, 04:15 UTCJun 24, 04:24 UTC10m
2026-06-24 AIZ - Jun 24, 03:15 UTCJun 24, 03:35 UTC20m
2026-06-24 AIZ - Jun 24, 02:24 UTCJun 24, 02:45 UTC20m
2026-06-23 AIZ CES → CES Jun 23, 02:29 UTCJun 23, 02:45 UTC15m
2026-06-23 AIZ - Jun 23, 00:45 UTCJun 23, 01:35 UTC50m
2026-06-22 AIZ - Jun 22, 07:14 UTCJun 22, 08:50 UTC1h 35m
2026-06-17 AIZ - Jun 17, 23:55 UTCJun 18, 00:20 UTC25m
2026-06-17 AIZ - Jun 17, 03:20 UTCJun 17, 04:05 UTC45m
2026-06-17 AIZ - Jun 17, 02:15 UTCJun 17, 02:25 UTC10m
2026-06-17 AIZ - Jun 17, 00:45 UTCJun 17, 02:05 UTC1h 20m
2026-06-16 AIZ CES → CES Jun 16, 23:20 UTCJun 16, 23:35 UTC15m
2026-06-13 AIZ - Jun 13, 04:35 UTCJun 13, 05:15 UTC40m
2026-06-13 AIZ - Jun 13, 02:10 UTCJun 13, 02:40 UTC30m
2026-06-12 AIZ - Jun 12, 00:30 UTCJun 12, 00:55 UTC25m
2026-06-11 - - Jun 11, 22:50 UTCJun 11, 23:30 UTC40m
2026-06-11 AIZ - Jun 11, 00:55 UTCJun 11, 01:20 UTC25m
2026-06-10 AIZ - Jun 10, 03:10 UTCJun 10, 03:45 UTC35m
2026-06-10 AIZ - Jun 10, 00:55 UTCJun 10, 01:35 UTC40m
2026-06-08 AIZ - Jun 8, 02:20 UTCJun 8, 03:05 UTC45m
2026-06-06 AIZ - Jun 6, 02:10 UTCJun 6, 02:40 UTC30m
2026-06-06 AIZ - Jun 6, 00:20 UTCJun 6, 01:40 UTC1h 20m
2026-06-02 AIZ CES → CES Jun 2, 23:45 UTCJun 3, 00:15 UTC30m
2026-06-01 AIZ - Jun 1, 08:00 UTCJun 1, 09:30 UTC1h 30m
2026-06-01 AIZ - Jun 1, 05:35 UTCJun 1, 05:55 UTC20m
2026-06-01 AIZ - Jun 1, 02:00 UTCJun 1, 02:25 UTC25m
2026-05-30 AIZ - May 30, 03:30 UTCMay 30, 03:40 UTC10m
2026-05-30 AIZ - May 30, 02:30 UTCMay 30, 02:55 UTC25m
2026-05-24 AIZ - May 24, 03:15 UTCMay 24, 03:55 UTC40m
2026-05-22 AIZ - May 22, 03:50 UTCMay 22, 04:15 UTC25m

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

Mode-S 7C0139 frequently asked

What is Mode-S code 7C0139?
7C0139 is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-AIZ.
Where is Mode-S 7C0139 registered?
Mode-S code 7C0139 is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C0139 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 01:45 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7C0139, octal 37000471, decimal 8,126,777.
What flights does 7C0139 operate?
Mode-S 7C0139 has broadcast 1 distinct callsign, including AIZ.