The Kingsford Smith PL.7 was an Australian agricultural aircraft designed by Luigi Pellarini and built in the 1950s by Kingsford Smith Aviation Service.
[1] The PL.7 was basically a welded steel tank for the pilot and chemical hopper, on the front was mounted a 400 hp (298 kW) Armstrong Siddeley Cheetah X radial engine.
[1] It was an unequal span biplane with a tail unit supported by twin booms from the upper wings and a fixed tricycle landing gear.
[1] Data from [2]FlightGeneral characteristics Performance