Savoia-Marchetti S.74The Savoia-Marchetti S.74 was a four-engine airliner developed by Savoia-Marchetti for Ala Littoria.Design and developmentThe prototype first flew on 16 November 1934. Only three were ever built.Operational historyThe aircraft were used in passenger service. On 22 December 1937, one broke the speed record over, at. When Italy entered World War II in 1940, they were put into service as military transport aircraft for the Regia Aeronautica. None of the three survived the war.OperatorsCivil operators LATIMilitary operators ''Regia Aeronautica''