CAO 95.10 continues to provide the only means by which an enthusiastic individual or small group (maximum of four persons — who are not required to have any aeronautical or engineering experience) can design and build a low-cost single-place aeroplane, whether the design is conventional or unconventional, with no restrictions, except that:
take off weight must not exceed 300 kg
wing loading must not exceed 30 kg/m² (about 6 lb/ft²)
a placard must be placed in the cockpit warning that neither the CASA nor RA-Aus guarantee the airworthiness of the aeroplane and pilots operate it at their own risk.
There is no restriction on the flight control system (i.e. three-axis, weight-shift or hybrid), the number of engines, the type of propulsion, the type of propeller system (or even the existence of such — it could be a rocket engine) or type of undercarriage; i.e. it could be retractable. Of course the 300 kg MTOW and maximum 30 kg/m² wing loading tends to limit choices. The provisions of CAO 95.10 are planned to be maintained in CASR Part 103 in a new classification of 'low momentum ultralight aeroplanes'.
Does this still apply?