Apparatus

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sensors Mode-S transponder

7C42DC

ICAO 24-bit transponder address · allocated to Australia

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

Hex
7C42DC
Octal
37041334
Decimal
8,143,580
Country
AU
Tail
VH-NHQ
Type
F100
No current signal · last broadcast Jul 26, 22:35 UTC
Flights observed
119
Distinct callsigns
20
Country
AU
Last broadcast
Jul 26, 22:35 UTC

Last known position

Most recent position reported by Mode-S 7C42DC.

Country allocation

The ICAO 24-bit address 7C42DC 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
NWK1614 - 11 2026-07-24
NWK1615 - 10 2026-07-24
NWK1612 - 6 2026-07-15
NWK1611 - 5 2026-07-10
NWK1610 - 5 2026-07-10
NWK2908 - 4 2026-07-26
NWK1770 - 4 2026-06-25
NWK1650 - 4 2026-07-26
NWK1613 - 4 2026-07-16
NWK2922 - 3 2026-07-06
NWK1631 - 3 2026-07-08
NWK6235 - 2 2026-05-31
NWK2910 - 2 2026-06-29
NWK2902 - 2 2026-07-08
NWK2777 - 2 2026-04-16
NWK2760 - 2 2026-07-23
NWK2748 - 2 2026-05-11
NWK1722 - 2 2026-06-04
NWK1636 - 2 2026-07-22
NWK1634 - 2 2026-07-23

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 NWK2908 - Jul 26, 22:05 UTCJul 26, 22:35 UTC30m
2026-07-26 NWK1650 PER → PER Jul 26, 07:40 UTCJul 26, 12:45 UTC5h 5m
2026-07-24 NWK1615 - Jul 24, 10:50 UTCJul 24, 11:25 UTC35m
2026-07-24 NWK1614 - Jul 24, 08:45 UTCJul 24, 09:10 UTC25m
2026-07-24 NWK1602 PER → PER Jul 24, 03:05 UTCJul 24, 07:30 UTC4h 25m
2026-07-23 NWK2760 PER → PER Jul 23, 21:15 UTCJul 24, 01:35 UTC4h 20m
2026-07-23 NWK1634 PER → PER Jul 23, 04:55 UTCJul 23, 08:50 UTC3h 55m
2026-07-22 NWK1636 - Jul 22, 00:10 UTCJul 22, 00:45 UTC35m
2026-07-21 NWK1648 PER → PER Jul 21, 07:30 UTCJul 21, 12:15 UTC4h 45m
2026-07-20 NWK1727 PER → PER Jul 20, 23:20 UTCJul 21, 04:30 UTC5h 9m
2026-07-18 NWK6520 PER → PER Jul 18, 06:15 UTCJul 18, 10:50 UTC4h 35m
2026-07-16 NWK1600 PER → PER Jul 16, 22:15 UTCJul 17, 10:50 UTC12h 35m
2026-07-16 NWK2956 PER → PER Jul 16, 03:20 UTCJul 16, 12:30 UTC9h 10m
2026-07-16 NWK1613 - Jul 16, 01:20 UTCJul 16, 02:00 UTC40m
2026-07-15 NWK1612 - Jul 15, 23:35 UTCJul 16, 00:05 UTC30m
2026-07-14 NWK1650 PER → PER Jul 14, 08:00 UTCJul 14, 12:40 UTC4h 40m
2026-07-14 NWK1641 PER → PER Jul 14, 00:05 UTCJul 14, 05:10 UTC5h 5m
2026-07-13 NWK1615 - Jul 13, 10:30 UTCJul 13, 11:05 UTC35m
2026-07-13 NWK1614 - Jul 13, 08:35 UTCJul 13, 09:05 UTC30m
2026-07-12 NWK2909 PER → PER Jul 12, 22:10 UTCJul 13, 02:40 UTC4h 30m
2026-07-10 NWK1611 KGI → PER Jul 10, 11:10 UTCJul 10, 12:05 UTC55m
2026-07-10 NWK1610 PER → KGI Jul 10, 09:30 UTCJul 10, 10:25 UTC55m
2026-07-09 NWK1772 PER → PER Jul 9, 23:00 UTCJul 10, 08:10 UTC9h 10m
2026-07-08 NWK1631 PER → PER Jul 8, 23:45 UTCJul 9, 04:05 UTC4h 20m
2026-07-08 NWK2902 PER → PER Jul 8, 00:55 UTCJul 8, 07:25 UTC6h 30m
2026-07-06 NWK2922 PER → PER Jul 6, 21:40 UTCJul 7, 08:45 UTC11h 5m
2026-07-06 NWK1624 PER → PER Jul 6, 07:45 UTCJul 6, 11:30 UTC3h 45m
2026-07-05 NWK2908 PER → PER Jul 5, 22:10 UTCJul 6, 02:30 UTC4h 20m
2026-07-02 NWK1609 KGI → PER Jul 2, 09:20 UTCJul 2, 10:25 UTC1h 5m
2026-07-02 NWK1608 PER → KGI Jul 2, 07:25 UTCJul 2, 08:20 UTC55m
2026-07-02 NWK1720 PER → PER Jul 2, 00:20 UTCJul 2, 05:30 UTC5h 10m
2026-06-30 NWK1615 - Jun 30, 10:40 UTCJun 30, 11:35 UTC55m
2026-06-30 NWK1614 - Jun 30, 08:50 UTCJun 30, 09:15 UTC25m
2026-06-29 NWK2910 PER → PER Jun 29, 22:15 UTCJun 30, 05:30 UTC7h 16m
2026-06-26 NWK2928 PER → PER Jun 26, 06:09 UTCJun 26, 10:15 UTC4h 5m
2026-06-25 NWK1770 PER → PER Jun 25, 22:10 UTCJun 26, 03:34 UTC5h 25m
2026-06-25 NWK1734 PER → PER Jun 25, 06:44 UTCJun 25, 11:54 UTC5h 10m
2026-06-24 NWK2918 PER → PER Jun 24, 21:34 UTCJun 25, 05:15 UTC7h 40m
2026-06-24 NWK1613 - Jun 24, 01:19 UTCJun 24, 02:00 UTC40m
2026-06-23 NWK1612 - Jun 23, 23:39 UTCJun 24, 00:09 UTC30m
2026-06-23 NWK1613 - Jun 23, 03:45 UTCJun 23, 04:25 UTC40m
2026-06-22 NWK1612 - Jun 22, 23:45 UTCJun 23, 00:09 UTC25m
2026-06-15 NWK2922 PER → PER Jun 15, 21:45 UTCJun 16, 08:55 UTC11h 10m
2026-06-15 NWK1611 KGI → PER Jun 15, 11:19 UTCJun 15, 12:15 UTC55m
2026-06-15 NWK1610 PER → KGI Jun 15, 09:30 UTCJun 15, 10:20 UTC50m
2026-06-14 NWK2900 PER → PER Jun 14, 21:45 UTCJun 15, 01:55 UTC4h 9m
2026-06-11 NWK1612 - Jun 11, 00:35 UTCJun 11, 01:15 UTC40m
2026-06-10 NWK1612 - Jun 10, 23:25 UTCJun 11, 00:00 UTC35m
2026-06-08 NWK2922 PER → PER Jun 8, 21:45 UTCJun 9, 08:35 UTC10h 50m
2026-06-08 NWK1615 - Jun 8, 11:00 UTCJun 8, 11:35 UTC35m

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

Mode-S 7C42DC frequently asked

What is Mode-S code 7C42DC?
7C42DC is an ICAO 24-bit transponder address. Allocated to Australia. Assigned to VH-NHQ.
Where is Mode-S 7C42DC registered?
Mode-S code 7C42DC is allocated to Australia (AU). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 7C42DC broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 22:35 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 7C42DC, octal 37041334, decimal 8,143,580.
What flights does 7C42DC operate?
Mode-S 7C42DC has broadcast 20 distinct callsigns, including NWK1614, NWK1615, NWK1612, NWK1611, NWK1610.