Maurice Brochet had designed the MB.30 parasol light aircraft and the MB.40 cabin two-seater before World War Two.

His first postwar design was the MB.50 Pipistrelle ("Bat") of 1947, which first flew that year.

It is a single-seat open-cockpit ultra-light aircraft with a pylon-mounted high wing, wooden fuselage frame and fabric covering.

The design was kept simple with the amateur-built market, using factory working drawings, in mind.

[2] Maurice Brochet formed Constructions Aeronautiques Maurice Brochet[3] and designed the MB.60 Barbastrelle tandem two-seat high-wing monoplane which first flew in June 1949.