Complex sentence: The SIPA S.90 was designed by Yves Gardan for the Societe Industrielle pour l'Aeronautique (SIPA) and first flew on 15 May 1947, winning a French government competition for a new light two-seat aircraft for the French aero clubs.
Split into simpler sentences: The SIPA S.90 was designed by Yves Gardan for the Societe Industrielle pour l'Aeronautique (SIPA). The prototype first flew on 15 May 1947, winning a French government competition for a new light two-seat aircraft for the French aero clubs.