First flight

First flight of the Stampe SV-4 prototype

May 17, 1933

The S-IV prototype, forerunner of the Stampe SV-4, flew from Deurne (Antwerp) with Jean Stampe at the controls. Most sources give the date as 17 May 1933, though one Dutch-language source states the 13th.

Sources: aviationsmilitaires.net