 30 were produced for the Finnish Air Force and served from 1935 to 1949.Arvo Ylinen, who was the chief designer at the State Aircraft Factory ("Valtion lentokonetehdas", abbreviated VL) led a project to create a new trainer aircraft for the Finnish Air Force.A prototype was built in 1933 and it was first flown on January 10, 1934 by lieutenant U.E.