Apparatus

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sensors Mode-S transponder

7C1673

ICAO 24-bit transponder address · allocated to Australia

Currently assigned to VH-EPX · PARTENAVIA P-68 Observer · operated by AEROMETREX LIMITED

Hex
7C1673
Octal
37013163
Decimal
8,132,211
Country
AU
Tail
VH-EPX
Type
P68
No current signal · last broadcast 3d ago
Flights observed
47
Distinct callsigns
1
Country
AU
Last broadcast
3d ago

Last known position

Most recent position reported by Mode-S 7C1673.

Country allocation

The ICAO 24-bit address 7C1673 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
EPX - 47 2026-07-26

Recent flights last 47

DateFlightRouteTakeoffLandingDuration
2026-07-26 EPX - Jul 26, 04:40 UTCJul 26, 04:55 UTC15m
2026-07-23 EPX - Jul 23, 04:40 UTCJul 23, 05:05 UTC25m
2026-07-22 EPX - Jul 22, 23:50 UTCJul 23, 00:30 UTC40m
2026-07-18 EPX - Jul 18, 03:30 UTCJul 18, 05:20 UTC1h 50m
2026-07-18 EPX - Jul 18, 02:14 UTCJul 18, 02:45 UTC30m
2026-07-15 EPX - Jul 15, 01:30 UTCJul 15, 02:50 UTC1h 20m
2026-07-15 EPX - Jul 15, 00:00 UTCJul 15, 00:40 UTC40m
2026-07-04 EPX - Jul 4, 01:40 UTCJul 4, 03:45 UTC2h 5m
2026-07-03 EPX - Jul 3, 22:45 UTCJul 4, 00:15 UTC1h 30m
2026-07-03 EPX MTL → MTL Jul 3, 01:50 UTCJul 3, 02:45 UTC55m
2026-07-02 EPX - Jul 2, 04:55 UTCJul 2, 05:05 UTC10m
2026-07-02 EPX - Jul 2, 00:05 UTCJul 2, 02:05 UTC2h 0m
2026-07-01 EPX - Jul 1, 00:10 UTCJul 1, 00:25 UTC15m
2026-06-29 EPX - Jun 29, 00:29 UTCJun 29, 00:44 UTC15m
2026-06-28 EPX - Jun 28, 01:59 UTCJun 28, 02:39 UTC40m
2026-06-24 EPX - Jun 24, 20:49 UTCJun 24, 21:19 UTC30m
2026-06-24 EPX - Jun 24, 01:19 UTCJun 24, 02:09 UTC50m
2026-06-23 EPX - Jun 23, 22:44 UTCJun 23, 23:14 UTC30m
2026-06-23 EPX - Jun 23, 03:15 UTCJun 23, 03:49 UTC35m
2026-06-22 EPX - Jun 22, 23:45 UTCJun 23, 00:04 UTC20m
2026-06-22 EPX - Jun 22, 07:30 UTCJun 22, 07:54 UTC25m
2026-06-22 EPX - Jun 22, 04:40 UTCJun 22, 05:40 UTC1h 0m
2026-06-13 EPX - Jun 13, 02:35 UTCJun 13, 03:10 UTC35m
2026-06-05 EPX - Jun 5, 01:40 UTCJun 5, 02:30 UTC50m
2026-06-04 EPX - Jun 4, 03:05 UTCJun 4, 03:55 UTC50m
2026-05-28 EPX - May 28, 03:00 UTCMay 28, 03:40 UTC40m
2026-05-23 EPX - May 23, 05:20 UTCMay 23, 05:35 UTC15m
2026-05-23 EPX - May 23, 01:05 UTCMay 23, 02:15 UTC1h 10m
2026-05-22 EPX MEB → MEB May 22, 03:00 UTCMay 22, 05:05 UTC2h 5m
2026-05-14 EPX MEB → MEB May 14, 02:35 UTCMay 14, 04:15 UTC1h 40m
2026-05-13 EPX MEB → MEB May 13, 02:45 UTCMay 13, 04:05 UTC1h 20m
2026-05-12 EPX - May 12, 02:45 UTCMay 12, 04:45 UTC2h 0m
2026-05-11 EPX - May 11, 02:20 UTCMay 11, 04:20 UTC2h 0m
2026-05-10 EPX - May 10, 22:45 UTCMay 10, 23:50 UTC1h 5m
2026-05-10 EPX - May 10, 05:00 UTCMay 10, 05:30 UTC30m
2026-05-10 EPX - May 10, 04:19 UTCMay 10, 04:39 UTC20m
2026-05-10 EPX - May 10, 01:04 UTCMay 10, 01:30 UTC25m
2026-05-09 EPX - May 9, 23:25 UTCMay 9, 23:55 UTC30m
2026-05-09 EPX - May 9, 02:15 UTCMay 9, 03:00 UTC45m
2026-05-08 EPX - May 8, 23:45 UTCMay 9, 00:35 UTC50m
2026-05-05 EPX - May 5, 04:55 UTCMay 5, 05:45 UTC50m
2026-05-05 EPX - May 5, 02:50 UTCMay 5, 03:25 UTC35m
2026-04-29 EPX - Apr 29, 21:20 UTCApr 29, 22:10 UTC50m
2026-04-25 EPX - Apr 25, 22:15 UTCApr 26, 00:10 UTC1h 55m
2026-04-16 EPX - Apr 16, 23:20 UTCApr 17, 00:05 UTC45m
2026-04-16 EPX - Apr 16, 03:24 UTCApr 16, 04:04 UTC40m
2026-04-13 EPX - Apr 13, 05:05 UTCApr 13, 05:45 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-EPX page for operator, model, and routing details .

Mode-S 7C1673 frequently asked

What is Mode-S code 7C1673?
7C1673 is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-EPX.
Where is Mode-S 7C1673 registered?
Mode-S code 7C1673 is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C1673 broadcasting right now?
No active broadcast right now. Last signal was 3d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7C1673, octal 37013163, decimal 8,132,211.
What flights does 7C1673 operate?
Mode-S 7C1673 has broadcast 1 distinct callsign, including EPX.