 Germany provided 6 captured ex-Royal Yugoslav Air Force Mk I aircraft to Romania in 1941, where they joined 12 Mk Is previously purchased from Britain.The Royal Yugoslav Air Force acquired 24 Mk I aircraft from RAF stocks and subsequently undertook a licensed production run of some 36 aircraft.Tooling up for the production of the Mk IV was about to commence when interrupted by the Invasion of Yugoslavia in April 1941.