Head of Power
From
australia.gov.au
The Commonwealth (Australian Government) heads of power is at section 51 of the Constitution.
The Australian Government also has power to make laws for Australia's territories (section 122).
A quick look at the concept of "Head of Power" will give you a lead in this 601.
Going in this direction [No doubt the casa spin doctors will say other wise] is not legal.
It is the regulations that must reflect the "head of power" of the CAA and the CAO.