The Breda A.4 was a biplane trainer produced in Italy in the mid-1920s. It was of conventional configuration with a two-bay unstaggered wing cellule and seating for the pilot and instructor in tandem open cockpits. Apart from civil use, the A.4 was also adopted by the Regia Aeronautica as a trainer. At least some examples were produced in floatplane configuration as the A.4idro. Variants A.4 Two-seat primary training biplane, powered by a Colombo D.110 6-cylinder water-cooled in-line engine. A.4 HS Similar to the A.4, powered by a Hispano-Suiza 8 V-8 water-cooled piston engine. A.4idro Floatplane version of A.4 HS. Operators Regia Aeronautica Specifications (A.4 HS landplane) See also References Further reading External links Уголок неба A.4 1920s Italian civil trainer aircraft Biplanes Single-engined tractor aircraft Aircraft first flown in 1926