Apparatus

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sensors Mode-S transponder

7C42D8

ICAO 24-bit transponder address · allocated to Australia

Currently assigned to VH-NHM · FOKKER 100 · operated by NETWORK AVIATION PTY LTD

Hex
7C42D8
Octal
37041330
Decimal
8,143,576
Country
AU
Tail
VH-NHM
Type
F100
No current signal · last broadcast Jul 24, 10:35 UTC
Flights observed
98
Distinct callsigns
20
Country
AU
Last broadcast
Jul 24, 10:35 UTC

Last known position

Most recent position reported by Mode-S 7C42D8.

Country allocation

The ICAO 24-bit address 7C42D8 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 20 distinct

Callsign Airline Flights Last seen
NWK1600 - 7 2026-07-23
NWK1615 - 6 2026-06-28
NWK1614 - 6 2026-06-28
NWK2908 - 4 2026-07-13
NWK1712 - 4 2026-07-06
NWK2771 - 3 2026-05-25
NWK2770 - 3 2026-05-24
NWK1624 - 3 2026-06-18
NWK1619 - 3 2026-06-18
NWK1613 - 3 2026-07-07
NWK1612 - 3 2026-07-07
NWK1611 - 3 2026-07-08
NWK1610 - 3 2026-07-08
NWK2941 - 2 2026-05-25
NWK2940 - 2 2026-05-07
NWK2902 - 2 2026-05-19
NWK2748 - 2 2026-05-29
NWK1772 - 2 2026-06-22
NWK1771 - 2 2026-07-02
NWK1650 - 2 2026-06-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-24 NWK1603 - Jul 24, 09:50 UTCJul 24, 10:30 UTC40m
2026-07-23 NWK1600 - Jul 23, 22:20 UTCJul 23, 22:40 UTC20m
2026-07-23 NWK7840 PER → PER Jul 23, 07:45 UTCJul 23, 12:10 UTC4h 25m
2026-07-22 NWK1770 PER → PER Jul 22, 21:15 UTCJul 23, 04:10 UTC6h 55m
2026-07-21 NWK1600 - Jul 21, 22:00 UTCJul 21, 22:30 UTC30m
2026-07-19 NWK6520 PER → PER Jul 19, 05:20 UTCJul 19, 09:55 UTC4h 35m
2026-07-16 NWK1605 - Jul 16, 06:50 UTCJul 16, 07:30 UTC40m
2026-07-16 NWK1604 PER → KGI Jul 16, 04:05 UTCJul 16, 04:55 UTC50m
2026-07-14 NWK1600 PER → PER Jul 14, 21:35 UTCJul 15, 09:40 UTC12h 4m
2026-07-14 NWK6522 PER → PER Jul 14, 09:20 UTCJul 14, 14:55 UTC5h 35m
2026-07-13 NWK2908 PER → PER Jul 13, 21:55 UTCJul 14, 02:10 UTC4h 15m
2026-07-13 NWK2719 - Jul 13, 08:15 UTCJul 13, 09:10 UTC55m
2026-07-13 NWK2718 - Jul 13, 00:25 UTCJul 13, 01:05 UTC40m
2026-07-09 NWK2956 PER → PER Jul 9, 03:20 UTCJul 9, 11:55 UTC8h 35m
2026-07-08 NWK1611 - Jul 8, 12:20 UTCJul 8, 12:50 UTC30m
2026-07-08 NWK1610 PER → KGI Jul 8, 10:20 UTCJul 8, 11:10 UTC50m
2026-07-07 NWK1613 - Jul 7, 03:05 UTCJul 7, 03:50 UTC45m
2026-07-07 NWK1612 - Jul 7, 00:10 UTCJul 7, 00:35 UTC25m
2026-07-06 NWK1712 PER → PER Jul 6, 08:40 UTCJul 6, 12:30 UTC3h 50m
2026-07-03 NWK2928 PER → PER Jul 3, 06:05 UTCJul 3, 10:05 UTC4h 0m
2026-07-02 NWK1771 - Jul 2, 22:05 UTCJul 3, 02:45 UTC4h 40m
2026-07-01 NWK6500 PER → PER Jul 1, 03:45 UTCJul 1, 07:55 UTC4h 10m
2026-06-30 NWK1611 KGI → PER Jun 30, 11:15 UTCJun 30, 12:20 UTC1h 5m
2026-06-30 NWK1610 PER → KGI Jun 30, 09:25 UTCJun 30, 10:20 UTC55m
2026-06-29 NWK1713 PER → PER Jun 29, 08:39 UTCJun 29, 13:00 UTC4h 20m
2026-06-29 NWK2955 - Jun 29, 00:29 UTCJun 29, 05:00 UTC4h 30m
2026-06-28 NWK1615 - Jun 28, 10:30 UTCJun 28, 10:55 UTC25m
2026-06-28 NWK1614 - Jun 28, 08:50 UTCJun 28, 09:20 UTC30m
2026-06-23 NWK1650 PER → PER Jun 23, 07:40 UTCJun 23, 12:45 UTC5h 5m
2026-06-22 NWK1600 PER → PER Jun 22, 23:24 UTCJun 23, 05:20 UTC5h 55m
2026-06-22 NWK1772 PER → PER Jun 22, 04:04 UTCJun 22, 08:25 UTC4h 20m
2026-06-21 NWK2908 PER → PER Jun 21, 22:10 UTCJun 22, 02:34 UTC4h 25m
2026-06-18 NWK1619 PER → PER Jun 18, 22:45 UTCJun 19, 03:15 UTC4h 29m
2026-06-18 NWK1624 PER → PER Jun 18, 07:55 UTCJun 18, 11:55 UTC4h 0m
2026-06-16 NWK2908 PER → PER Jun 16, 23:00 UTCJun 17, 04:05 UTC5h 5m
2026-06-09 NWK2903 PER → PER Jun 9, 22:40 UTCJun 10, 10:15 UTC11h 35m
2026-06-09 NWK1712 - Jun 9, 08:50 UTCJun 9, 12:30 UTC3h 40m
2026-06-08 NWK1600 PER → PER Jun 8, 23:15 UTCJun 9, 04:30 UTC5h 15m
2026-06-05 NWK2924 PER → PER Jun 5, 04:40 UTCJun 5, 09:20 UTC4h 40m
2026-06-04 NWK1618 PER → PER Jun 4, 22:50 UTCJun 5, 02:45 UTC3h 55m
2026-06-03 NWK2919 - Jun 3, 21:40 UTCJun 4, 05:40 UTC8h 0m
2026-06-03 NWK1615 - Jun 3, 10:40 UTCJun 3, 11:15 UTC35m
2026-06-03 NWK1614 - Jun 3, 08:45 UTCJun 3, 09:15 UTC30m
2026-06-03 NWK1636 PER → PER Jun 3, 00:05 UTCJun 3, 07:05 UTC7h 0m
2026-05-31 NWK2921 PER → PER May 31, 22:40 UTCJun 1, 03:15 UTC4h 35m
2026-05-29 NWK2748 PER → PER May 29, 21:30 UTCMay 30, 01:45 UTC4h 15m
2026-05-28 NWK1772 PER → PER May 28, 22:55 UTCMay 29, 08:35 UTC9h 40m
2026-05-25 NWK2941 PER → PER May 25, 22:05 UTCMay 26, 03:00 UTC4h 55m
2026-05-25 NWK2771 - May 25, 08:20 UTCMay 25, 09:30 UTC1h 10m
2026-05-24 NWK2770 - May 24, 23:35 UTCMay 24, 23:46 UTC11m

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

Mode-S 7C42D8 frequently asked

What is Mode-S code 7C42D8?
7C42D8 is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-NHM.
Where is Mode-S 7C42D8 registered?
Mode-S code 7C42D8 is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C42D8 broadcasting right now?
No active broadcast right now. Last signal was Jul 24, 10:35 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7C42D8, octal 37041330, decimal 8,143,576.
What flights does 7C42D8 operate?
Mode-S 7C42D8 has broadcast 20 distinct callsigns, including NWK1600, NWK1615, NWK1614, NWK2908, NWK1712.