It was powered by two Gnome-Rhône 14N radial engines and had a retractable landing gear.

Normal crew was four, with room for 16 passengers, with eight seats each side of a central aisle.

The prototype first flew on 11 June 1936 at Villacoublay with André Curvale at the controls,[1] and was followed by 16 production aircraft.

The first service of the type (between Le Bourget and Croydon (in south of London) was flown on 27 March 1938 with a scheduled time of 1 hour 15 minutes.

Air France continued to fly the aircraft (as MB.221s) after the war on short-range European routes.