Apparatus

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sensors Mode-S transponder

7C42BF

ICAO 24-bit transponder address · allocated to Australia

Currently assigned to VH-NGX · SWEARINGEN Metro · operated by CASAIR PTY LTD

Hex
7C42BF
Octal
37041277
Decimal
8,143,551
Country
AU
Tail
VH-NGX
Type
SW4
No current signal · last broadcast 1d ago
Flights observed
164
Distinct callsigns
1
Country
AU
Last broadcast
1d ago

Last known position

Most recent position reported by Mode-S 7C42BF.

Country allocation

The ICAO 24-bit address 7C42BF 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
NGX - 164 2026-07-17

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-17 NGX - Jul 17, 01:45 UTCJul 17, 02:25 UTC40m
2026-07-16 NGX - Jul 16, 23:49 UTCJul 17, 00:30 UTC40m
2026-07-16 NGX - Jul 16, 08:40 UTCJul 16, 09:35 UTC55m
2026-07-16 NGX - Jul 16, 00:15 UTCJul 16, 01:05 UTC50m
2026-07-14 NGX - Jul 14, 05:30 UTCJul 14, 06:00 UTC30m
2026-07-14 NGX - Jul 14, 03:35 UTCJul 14, 04:15 UTC40m
2026-07-14 NGX - Jul 14, 01:20 UTCJul 14, 02:15 UTC55m
2026-07-13 NGX - Jul 13, 22:50 UTCJul 13, 23:40 UTC50m
2026-07-13 NGX - Jul 13, 06:10 UTCJul 13, 07:10 UTC1h 0m
2026-07-12 NGX - Jul 12, 22:40 UTCJul 12, 23:30 UTC50m
2026-07-10 NGX - Jul 10, 01:10 UTCJul 10, 02:10 UTC1h 0m
2026-07-09 NGX - Jul 9, 22:40 UTCJul 9, 23:30 UTC50m
2026-07-09 NGX - Jul 9, 05:10 UTCJul 9, 05:40 UTC30m
2026-07-09 NGX - Jul 9, 03:25 UTCJul 9, 04:00 UTC35m
2026-07-09 NGX - Jul 9, 01:10 UTCJul 9, 02:00 UTC50m
2026-07-08 NGX - Jul 8, 22:30 UTCJul 8, 23:20 UTC50m
2026-07-08 NGX - Jul 8, 03:35 UTCJul 8, 04:10 UTC35m
2026-07-08 NGX - Jul 8, 00:05 UTCJul 8, 00:45 UTC40m
2026-07-07 NGX JAD → JAD Jul 7, 09:35 UTCJul 7, 09:50 UTC15m
2026-07-02 NGX - Jul 2, 01:15 UTCJul 2, 02:00 UTC45m
2026-07-01 NGX - Jul 1, 22:35 UTCJul 1, 23:25 UTC50m
2026-07-01 NGX - Jul 1, 08:20 UTCJul 1, 09:10 UTC50m
2026-07-01 NGX - Jul 1, 05:25 UTCJul 1, 06:05 UTC40m
2026-07-01 NGX - Jul 1, 01:30 UTCJul 1, 02:05 UTC35m
2026-06-30 NGX - Jun 30, 23:40 UTCJul 1, 00:20 UTC40m
2026-06-30 NGX - Jun 30, 07:10 UTCJun 30, 08:05 UTC55m
2026-06-30 NGX - Jun 30, 03:50 UTCJun 30, 04:40 UTC50m
2026-06-30 NGX - Jun 30, 02:05 UTCJun 30, 03:00 UTC55m
2026-06-29 NGX - Jun 29, 22:55 UTCJun 29, 23:39 UTC45m
2026-06-29 NGX - Jun 29, 07:40 UTCJun 29, 08:29 UTC50m
2026-06-29 NGX - Jun 29, 03:54 UTCJun 29, 04:50 UTC55m
2026-06-29 NGX - Jun 29, 02:09 UTCJun 29, 02:59 UTC50m
2026-06-28 NGX - Jun 28, 22:45 UTCJun 28, 23:25 UTC40m
2026-06-26 NGX - Jun 26, 01:34 UTCJun 26, 02:14 UTC40m
2026-06-25 NGX - Jun 25, 22:34 UTCJun 25, 23:49 UTC1h 15m
2026-06-25 NGX - Jun 25, 04:40 UTCJun 25, 05:09 UTC30m
2026-06-25 NGX - Jun 25, 02:54 UTCJun 25, 03:34 UTC40m
2026-06-25 NGX - Jun 25, 01:30 UTCJun 25, 02:14 UTC45m
2026-06-24 NGX - Jun 24, 22:55 UTCJun 24, 23:40 UTC45m
2026-06-24 NGX - Jun 24, 09:24 UTCJun 24, 10:10 UTC45m
2026-06-23 NGX - Jun 23, 23:05 UTCJun 23, 23:59 UTC55m
2026-06-23 NGX - Jun 23, 05:45 UTCJun 23, 06:19 UTC35m
2026-06-23 NGX - Jun 23, 03:39 UTCJun 23, 04:19 UTC40m
2026-06-23 NGX - Jun 23, 01:40 UTCJun 23, 02:34 UTC55m
2026-06-22 NGX - Jun 22, 22:44 UTCJun 22, 23:39 UTC55m
2026-06-22 NGX - Jun 22, 07:30 UTCJun 22, 08:25 UTC55m
2026-06-21 NGX - Jun 21, 22:40 UTCJun 21, 23:14 UTC35m
2026-06-19 NGX - Jun 19, 01:15 UTCJun 19, 01:59 UTC45m
2026-06-18 NGX - Jun 18, 22:10 UTCJun 18, 23:00 UTC50m
2026-06-18 NGX - Jun 18, 09:45 UTCJun 18, 10:25 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-NGX page for operator, model, and routing details .

Mode-S 7C42BF frequently asked

What is Mode-S code 7C42BF?
7C42BF is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-NGX.
Where is Mode-S 7C42BF registered?
Mode-S code 7C42BF is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C42BF broadcasting right now?
No active broadcast right now. Last signal was 1d ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7C42BF, octal 37041277, decimal 8,143,551.
What flights does 7C42BF operate?
Mode-S 7C42BF has broadcast 1 distinct callsign, including NGX.