EAY had built five examples by the time that the firm was purchased byCompanhia Aeronáutica Paulista in1942. CAP continued manufacturing the type under the designation CAP-4.
The type was widely successful, with nearly 800 units being produced for Brazil'sflying clubs and armed forces, as well as for export toArgentina,Paraguay,Chile,Uruguay andPortugal. At the time of peak production in 1943, a new CAP-4 left the factory every day, and production continued until 1948.
In 1956,Sociedade Aeronáutica Neiva acquired the rights renaming it toP-56 Paulistinha, the design was used as the basis for anagricultural aircraft, theP-56 Agricola, adding a fibreglass chemical hopper and spraybars, but this was unable to compete with imported, purpose-built agricultural aircraft.
Powered by 90 horsepower (67 kW)Continental C-90-8F/12F engine. 256 built by Neiva between 1958 and 1964.[1]
P56C-1 Paulistinha Rebocador
Paulistinha 56-D
More powerful version with 150 horsepower (110 kW)Lycoming O-320-A1A. Single prototype built, which was designatedL-6A by Brazilian Air Force. No production.[1]
O-6
Brazilian Air Force designation for an observation variant of the Paulistinha 56-B. Previously designatedL-6.[2]
Bridgman, Leonard (1998) [1946 (Reproduction of 1945/46Jane's All The World's Aircraft)].Jane's Fighting Aircraft of World War II. Twickenham, UK: Tiger Books.ISBN1-85501-994-9.
