Kalinin K-5

The Kalinin K-5 was an airliner produced in the Soviet Union in the 1930s, built in larger quantities than any other Soviet airliner of its time, with some 260 machines constructed. It was a conventional, high-wing, strut-braced monoplane with a fully enclosed cabin and cockpit, and followed the general pattern developed by Kalinin in his earlier designs, albeit on a larger scale. First flight 18 October 1929. Number built 260 and the primary user was Aeroflot