Macchi M. 39 Seaplane: Single-Seat Racer with an 800 HP. Fiat "A-S2" Engine
A 1927 NACA aircraft circular issued by the NASA Technical Reports Server collection, documenting the Macchi M.39 single-seat racing seaplane with its 800 hp Fiat A.S2 engine for aeronautical engineers. The pictures are technical: a three-view line drawing set with dimensions, and two photographs of the 1926 Schneider Cup winner, one in side view on floats and one head-on, useful for studying float struts and streamlined racing hull shapes.
