 The outer panels could be folded back on rear-spar hinges along the fuselage for road transport; when folded the width was .The Ostrovia II was initially powered by a Armstrong-Siddeley Genet five-cylinder radial engine which was mounted on the nose uncowled.Sometime after September 1931 this was replaced by a Cirrus III four-cylinder upright inline with its enclosed air-cooled cylinders projecting well above the nose.