Australia is a vast and sparsely-populated continent, with a highly active general aviation sector, and a healthy charter and scheduled passenger air transport sector servicing regional centres.
These factors are among those which contribute to Australia having more than 330 certified aerodromes (as defined by the Civil Aviation Safety Authority), and more than 2,000 defined aircraft landing areas (or ALAs). The vast majority of these are non-towered, with no separation or traffic guidance provided by a ground-based controller, as you would have in…