Where can I find the definition of a recognised aeroplane?? Is it in the CAR?
Yes - in the Interpretation section right at the front...
recognised aeroplane means an aeroplane:
(a) that is on the register of aircraft kept by a Contracting State; or
(b) that is operated by the Defence Force of Australia or of a Contracting State.
And while we are at it...
aeroplane means a power-driven heavier-than-air aircraft
deriving its lift in flight chiefly from aerodynamic reactions on
surfaces remaining fixed under given conditions of flight, but
does not include a power-assisted sailplane.
I hope that helps