As a result the airport is investigating an aerial connection to the Sydney office, but the expense is high and plans may be overtaken by Port Macquarie Council's intention to run a circular fiber-optic cable right around town.

Dechaineux said creating a business case for the project was easy.

"With a low fence and no eyes on the aircraft parked overnight there has always been the chance that people will gain illegal access to an aircraft and damage it or do any number of things. And since each aircraft is worth A$10 million (US$7.5 million) to A$12 million, the maths is not hard to do," he said.

"The system cost less than A$400,000, so the ability to protect an aircraft worth A$10 million is pretty significant, not to mention how catastrophic the consequences could be if loss of life was involved.

"I think we've lifted our game immensely in a very economical way."