Apparatus

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sensors Mode-S transponder

7C3EA1

ICAO 24-bit transponder address · allocated to Australia

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

Hex
7C3EA1
Octal
37037241
Decimal
8,142,497
Country
AU
Tail
VH-MNN
Type
DA40
No current signal · last broadcast 4h ago
Flights observed
176
Distinct callsigns
1
Country
AU
Last broadcast
4h ago

Last known position

Most recent position reported by Mode-S 7C3EA1.

Country allocation

The ICAO 24-bit address 7C3EA1 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
MNN - 176 2026-07-21

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-21 MNN MBW → MBW Jul 21, 06:10 UTCJul 21, 06:45 UTC35m
2026-07-21 MNN - Jul 21, 04:25 UTCJul 21, 04:45 UTC20m
2026-07-21 MNN - Jul 21, 03:10 UTCJul 21, 03:30 UTC20m
2026-07-20 MNN MBW → MBW Jul 20, 23:50 UTCJul 21, 01:50 UTC2h 0m
2026-07-19 MNN MBW → MBW Jul 19, 06:05 UTCJul 19, 06:45 UTC40m
2026-07-19 MNN MBW → MBW Jul 19, 01:25 UTCJul 19, 04:00 UTC2h 35m
2026-07-18 MNN - Jul 18, 05:50 UTCJul 18, 06:35 UTC45m
2026-07-18 MNN - Jul 18, 04:05 UTCJul 18, 04:35 UTC30m
2026-07-18 MNN MBW → MBW Jul 18, 02:05 UTCJul 18, 02:50 UTC46m
2026-07-18 MNN MBW → MBW Jul 18, 00:55 UTCJul 18, 01:45 UTC50m
2026-07-17 MNN MBW → MBW Jul 17, 23:25 UTCJul 18, 00:10 UTC45m
2026-07-17 MNN MBW → MBW Jul 17, 04:39 UTCJul 17, 06:15 UTC1h 35m
2026-07-17 MNN MBW → MBW Jul 17, 02:54 UTCJul 17, 03:39 UTC45m
2026-07-16 MNN MBW → MBW Jul 16, 05:50 UTCJul 16, 06:20 UTC30m
2026-07-16 MNN MBW → MBW Jul 16, 02:45 UTCJul 16, 03:30 UTC45m
2026-07-15 MNN MBW → MBW Jul 15, 04:40 UTCJul 15, 06:00 UTC1h 20m
2026-07-15 MNN - Jul 15, 02:30 UTCJul 15, 03:00 UTC30m
2026-07-15 MNN - Jul 15, 01:35 UTCJul 15, 01:55 UTC20m
2026-07-14 MNN MBW → MBW Jul 14, 23:10 UTCJul 14, 23:50 UTC40m
2026-07-13 MNN MBW → MBW Jul 13, 23:15 UTCJul 13, 23:45 UTC30m
2026-07-13 MNN MBW → MBW Jul 13, 05:45 UTCJul 13, 06:35 UTC50m
2026-07-11 MNN MBW → MBW Jul 11, 02:00 UTCJul 11, 02:35 UTC35m
2026-07-10 MNN MBW → MBW Jul 10, 22:35 UTCJul 11, 00:55 UTC2h 20m
2026-07-10 MNN MBW → MBW Jul 10, 06:00 UTCJul 10, 06:35 UTC35m
2026-07-09 MNN MBW → MBW Jul 9, 23:45 UTCJul 10, 00:35 UTC50m
2026-07-09 MNN MBW → MBW Jul 9, 06:25 UTCJul 9, 07:05 UTC40m
2026-07-09 MNN MBW → MBW Jul 9, 04:10 UTCJul 9, 04:45 UTC35m
2026-07-09 MNN MBW → MBW Jul 9, 01:20 UTCJul 9, 02:15 UTC55m
2026-07-09 MNN MBW → MBW Jul 9, 00:20 UTCJul 9, 00:35 UTC15m
2026-07-08 MNN MBW → MBW Jul 8, 04:35 UTCJul 8, 06:25 UTC1h 50m
2026-07-06 MNN MBW → MBW Jul 6, 04:05 UTCJul 6, 05:50 UTC1h 45m
2026-07-06 MNN MBW → MBW Jul 6, 01:10 UTCJul 6, 02:35 UTC1h 25m
2026-07-05 MNN MBW → MBW Jul 5, 23:05 UTCJul 6, 00:25 UTC1h 20m
2026-07-05 MNN - Jul 5, 05:15 UTCJul 5, 05:50 UTC35m
2026-07-05 MNN - Jul 5, 02:55 UTCJul 5, 04:10 UTC1h 15m
2026-07-05 MNN MBW → MBW Jul 5, 01:30 UTCJul 5, 02:10 UTC40m
2026-07-04 MNN MBW → MBW Jul 4, 06:00 UTCJul 4, 06:15 UTC15m
2026-07-04 MNN MBW → MBW Jul 4, 03:45 UTCJul 4, 04:15 UTC30m
2026-07-01 MNN - Jul 1, 06:00 UTCJul 1, 06:25 UTC25m
2026-07-01 MNN MBW → MBW Jul 1, 04:55 UTCJul 1, 05:40 UTC45m
2026-07-01 MNN MBW → MBW Jul 1, 02:20 UTCJul 1, 02:55 UTC35m
2026-06-30 MNN MBW → MBW Jun 30, 22:25 UTCJun 30, 23:55 UTC1h 30m
2026-06-29 MNN - Jun 29, 05:50 UTCJun 29, 06:54 UTC1h 5m
2026-06-29 MNN - Jun 29, 04:55 UTCJun 29, 05:20 UTC25m
2026-06-29 MNN MBW → MBW Jun 29, 03:25 UTCJun 29, 04:00 UTC35m
2026-06-26 MNN MBW → MBW Jun 26, 04:30 UTCJun 26, 04:34 UTC5m
2026-06-23 MNN MBW → MBW Jun 23, 05:39 UTCJun 23, 06:19 UTC40m
2026-06-23 MNN MBW → MBW Jun 23, 03:34 UTCJun 23, 04:09 UTC35m
2026-06-22 MNN MBW → MBW Jun 22, 22:34 UTCJun 22, 23:14 UTC40m
2026-06-22 MNN MBW → MBW Jun 22, 06:39 UTCJun 22, 07:19 UTC40m

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

Mode-S 7C3EA1 frequently asked

What is Mode-S code 7C3EA1?
7C3EA1 is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-MNN.
Where is Mode-S 7C3EA1 registered?
Mode-S code 7C3EA1 is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C3EA1 broadcasting right now?
No active broadcast right now. Last signal was 4h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7C3EA1, octal 37037241, decimal 8,142,497.
What flights does 7C3EA1 operate?
Mode-S 7C3EA1 has broadcast 1 distinct callsign, including MNN.