The National Socialist Flyers Corps (German: Nationalsozialistisches Fliegerkorps; NSFK) was a paramilitary organization of the Nazi Party that was founded 15 April 1937 as a successor to the German Air Sports Association; the latter had been active during the years when a German air force was forbidden by the Treaty of Versailles. The NSFK organization was based closely on the para-military organization of the Sturmabteilung (SA). A similar group was the National Socialist Motor Corps (NSKK).