 It was followed by a lightweight version designated the CAP 20L which in turn was replaced by the CAP 21 with more advanced wing.The CAP 20 was developed as a single-seat acrobatic version of the company's CAP 10; it was used by the French Air Force's flying demonstration team, "Equipe de Voltige Aerienne".The CAP 20L is externally similar to the 20, but is a structurally new design.