Australian Commonwealth Aircraft Company (CAC) Avon Sabre. Licence built improved version of the North American F-86F Sabre for the RAAF.Using the British Rolls Royce Avon RA7 axial flow jet engine of 7500 lb thrust. The aircraft was noticeably faster in climb and top speed than the US version. To fit this engine the fuselage had to be deepened and modifications to the tail design. The armament was changed from the US 6 x .50 cal machine guns to 2 x 30mm Aden cannons.