The CANT Z.509 was a three-engine Italian floatplane developed from the Z.506A for use as a mailplane. Design and development Designed as a larger and heavier version of the Z.506A, three aircraft were built in 1937 for Ala Littoria. The aircraft were for use on the airline's transatlantic postal service to South America. The aircraft was a twin-float seaplane powered by three Fiat A.80 R.C.41 radial engines. With the outbreak of World War II, development of the type was abandoned. Operators Ala Littoria Specifications (Z.509) See also References The Illustrated Encyclopedia of Aircraft (Part Work 1982–1985), 1985, Orbis Publishing Thompson, Jonathan W. Italian Civil and Military Aircraft 1930–1945, New York: Aero Publishers Inc., 1963. . Z.0509 Floatplanes 1930s Italian mailplanes Trimotors Low-wing aircraft Aircraft first flown in 1937