Apparatus

Try JFK, AAL1290, BAW, or N225AN.

sensors Mode-S transponder

7C3DE8

ICAO 24-bit transponder address · allocated to Australia

Currently assigned to VH-MII · DIAMOND DA-40 Club Star · operated by LEARN TO FLY AUSTRALIA OPERATIONS PTY LTD

Hex
7C3DE8
Octal
37036750
Decimal
8,142,312
Country
AU
Tail
VH-MII
Type
DA40
No current signal · last broadcast 2h ago
Flights observed
99
Distinct callsigns
1
Country
AU
Last broadcast
2h ago

Last known position

Most recent position reported by Mode-S 7C3DE8.

Country allocation

The ICAO 24-bit address 7C3DE8 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
MII - 99 2026-07-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-22 MII - Jul 22, 05:10 UTCJul 22, 05:25 UTC15m
2026-07-22 MII - Jul 22, 04:10 UTCJul 22, 04:25 UTC15m
2026-07-22 MII MBW → MBW Jul 22, 01:20 UTCJul 22, 02:10 UTC50m
2026-07-21 MII MBW → MBW Jul 21, 06:40 UTCJul 21, 07:00 UTC20m
2026-07-21 MII - Jul 21, 04:55 UTCJul 21, 05:20 UTC25m
2026-07-21 MII - Jul 21, 03:15 UTCJul 21, 03:40 UTC25m
2026-07-21 MII - Jul 21, 00:30 UTCJul 21, 01:50 UTC1h 20m
2026-07-20 MII - Jul 20, 23:20 UTCJul 20, 23:45 UTC25m
2026-07-20 MII MBW → MBW Jul 20, 04:10 UTCJul 20, 05:25 UTC1h 15m
2026-07-20 MII MBW → MBW Jul 20, 01:30 UTCJul 20, 01:50 UTC20m
2026-07-19 MII MBW → MBW Jul 19, 23:00 UTCJul 20, 00:40 UTC1h 40m
2026-07-19 MII - Jul 19, 04:35 UTCJul 19, 05:15 UTC40m
2026-07-19 MII - Jul 19, 03:00 UTCJul 19, 03:30 UTC30m
2026-07-18 MII MBW → MBW Jul 18, 23:40 UTCJul 19, 01:05 UTC1h 25m
2026-07-18 MII - Jul 18, 05:40 UTCJul 18, 06:30 UTC50m
2026-07-18 MII - Jul 18, 03:40 UTCJul 18, 04:15 UTC35m
2026-07-18 MII MBW → MBW Jul 18, 02:00 UTCJul 18, 02:35 UTC35m
2026-07-17 MII MBW → MBW Jul 17, 23:20 UTCJul 18, 00:10 UTC50m
2026-07-17 MII MBW → MBW Jul 17, 06:15 UTCJul 17, 07:00 UTC45m
2026-07-17 MII MBW → MBW Jul 17, 04:10 UTCJul 17, 04:49 UTC40m
2026-07-16 MII MBW → MBW Jul 16, 23:20 UTCJul 17, 00:10 UTC50m
2026-07-16 MII - Jul 16, 06:50 UTCJul 16, 06:55 UTC5m
2026-07-16 MII MBW → MBW Jul 16, 05:50 UTCJul 16, 06:25 UTC35m
2026-07-16 MII MBW → MBW Jul 16, 02:35 UTCJul 16, 03:35 UTC1h 0m
2026-07-14 MII MBW → MBW Jul 14, 22:55 UTCJul 15, 00:40 UTC1h 45m
2026-07-13 MII MBW → MBW Jul 13, 23:00 UTCJul 13, 23:55 UTC55m
2026-07-13 MII MBW → MBW Jul 13, 05:55 UTCJul 13, 06:40 UTC45m
2026-07-11 MII MBW → MBW Jul 11, 02:55 UTCJul 11, 04:15 UTC1h 20m
2026-07-10 MII MBW → MBW Jul 10, 23:00 UTCJul 11, 00:55 UTC1h 55m
2026-07-10 MII MBW → MBW Jul 10, 05:30 UTCJul 10, 06:40 UTC1h 10m
2026-07-10 MII MBW → MBW Jul 10, 02:45 UTCJul 10, 04:20 UTC1h 35m
2026-07-10 MII MBW → MBW Jul 10, 00:05 UTCJul 10, 00:45 UTC40m
2026-07-09 MII MBW → MBW Jul 9, 06:15 UTCJul 9, 06:55 UTC40m
2026-07-09 MII MBW → MBW Jul 9, 02:25 UTCJul 9, 03:00 UTC35m
2026-07-08 MII MBW → MBW Jul 8, 05:00 UTCJul 8, 05:40 UTC40m
2026-07-06 MII - Jul 6, 05:25 UTCJul 6, 06:00 UTC35m
2026-07-06 MII - Jul 6, 03:10 UTCJul 6, 04:25 UTC1h 15m
2026-07-06 MII MBW → MBW Jul 6, 01:35 UTCJul 6, 02:05 UTC30m
2026-07-05 MII MBW → MBW Jul 5, 06:20 UTCJul 5, 06:35 UTC15m
2026-07-05 MII MBW → MBW Jul 5, 04:10 UTCJul 5, 04:50 UTC40m
2026-07-05 MII - Jul 5, 01:15 UTCJul 5, 02:20 UTC1h 5m
2026-07-04 MII - Jul 4, 23:15 UTCJul 5, 00:45 UTC1h 30m
2026-07-01 MII MBW → MBW Jul 1, 04:35 UTCJul 1, 05:20 UTC45m
2026-07-01 MII MBW → MBW Jul 1, 01:50 UTCJul 1, 02:30 UTC40m
2026-06-29 MII MBW → MBW Jun 29, 06:09 UTCJun 29, 07:20 UTC1h 10m
2026-06-28 MII MBW → MBW Jun 28, 03:35 UTCJun 28, 05:09 UTC1h 35m
2026-06-28 MII MBW → MBW Jun 28, 01:55 UTCJun 28, 02:39 UTC45m
2026-06-27 MII MBW → MBW Jun 27, 06:05 UTCJun 27, 06:40 UTC35m
2026-06-26 MII MBW → MBW Jun 26, 05:10 UTCJun 26, 06:04 UTC55m
2026-06-25 MII MBW → MBW Jun 25, 03:34 UTCJun 25, 04:25 UTC50m

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

Mode-S 7C3DE8 frequently asked

What is Mode-S code 7C3DE8?
7C3DE8 is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-MII.
Where is Mode-S 7C3DE8 registered?
Mode-S code 7C3DE8 is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C3DE8 broadcasting right now?
No active broadcast right now. Last signal was 2h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7C3DE8, octal 37036750, decimal 8,142,312.
What flights does 7C3DE8 operate?
Mode-S 7C3DE8 has broadcast 1 distinct callsign, including MII.