The Curtiss CA-1 (sometimes known as the Commuter or the Courtney Amphibian) was an American five-seat biplane amphibian designed by Frank Courtney and built by Curtiss-Wright at St Louis, Missouri.
Designed by the British test pilot Frank Courtney, the CA-1 was a five-seat amphibian. The CA-1 was powered by a 365 hp (272 kW) Wright 975E-1 radial, cowled and fitted into the leading edge of the top wing driving - through an extension shaft - a pusher propeller. It had a tricycle amphibian landing gear and an enclosed cabin for the pilot and passengers. Only three aircraft were built and they were all sold in Japan.