CAP-21 (I-CILL) is the plane Aero Club Milano offers to sport aerobatics enthusiasts.

Low wing, single-engined of wooden construction, single-seater, with full-span ailerons to maximize roll rate, is an ideal mount for competition up to international, Advanced Category level, offering ease of flight, oustanding performance and operating economy. Lycoming IO-360 engine giving 200HP with fuel injection allows performance more than adequate for our most skilled pilots to compete at any level.