Delivery of Aero O/Y's second Ju 52 - OH-ALK was already put in service during 1932. These aircraft operated on floats in summer until the opening of Malmi airport in 1938. In peacetime after the Winter War on 14 June 1940, operating Aero O/Y flight 1631 from Tallinn, Kaleva was shot down by two Soviet DB-3 bombers during Soviet preparations to occupy Latvia. All nine people on board, including diplomatic couriers, were killed. This is said to have been the first commercial airliner shootdown by fighter aircraft in history. Photo by: Finnish Heritage Agency