While the designed empty weight of the aircraft is around 4,125 kg, the first prototype weighed in around 5,118 kg. This issue is sought to be addressed by including composite wings and tail by the third prototype. The airframe of Saras-PT2 was built with lighter composites to reduce its overall weight by about 400 kg from its first prototype, which was overweight by about 900 kg. The aircraft is powered by two Canadian Pratt & Whitney turbo-prop engines mounted in the pusher configuration.