Mount Mcquoid NDB

The Mount Mcquoid NDB was decommissioned due to technological obsolescence. Airservices Australia, the country's air navigation service provider, implemented a nationwide program to phase out a large number of ground-based navigation aids (including NDBs and VORs) in favor of more accurate, reliable, and cost-effective satellite-based navigation systems, primarily the Global Navigation Satellite System (GNSS), which includes GPS.

The site is located in a remote, rugged area within Popran National Park, New South Wales. The physical infrastructure, such as the transmitter hut and antenna mast, may have been dismantled and removed by Airservices Australia or may be abandoned in place. The land is part of the national park and is not used for any aviation purpose. The ICAO code 'AU-0676' is a non-official identifier used by some third-party databases to list navigational aids and is not a recognized ICAO airport code.

This site was never an airport and therefore handled no aircraft operations, passengers, or cargo. Its sole function was as a Non-Directional Beacon, a ground-based radio transmitter with the identifier 'MMQ'. For many decades, it served as a critical en-route navigational aid for aircraft. Pilots flying under Instrument Flight Rules (IFR) would use its signal to determine their bearing and maintain their course on airways, particularly for flights operating in and out of the Sydney basin and along the busy east coast of Australia. It was an essential piece of the national air navigation infrastructure before the universal adoption of satellite navigation.

There are zero prospects for reopening or reactivation. The site was never an airport, and the NDB technology it supported is now considered obsolete for primary air navigation in Australia. There is no operational or economic reason to reinstate this ground-based navigational aid.