On 29 July 1954, the prototype MS.760, registered F-WGVO (F-BGVO), took off on its maiden flight. Various features of its design, such as its T-shaped vertical stabilizer, low wing, and two Turbomeca Marboré II 400 kg turbojets internally mounted side by side within the aft fuselage, led to the aircraft being largely characterized for its inherent stability during flight. The French military emerged as a crucial early customer for the Paris, ordering a large batch of 50 aircraft to perform liaison duties for both the French Air Force and the French Navy, replacing older types such as the Nord Noralpha and Nord Norécrin. The securing of this order allowed Morane-Saulnier to proceed with quantity production of the type. On 27 February 1958, the first production aircraft performed its first flight. Early aircraft were provided with a total of four seats, two in the front and two in the back, and a retractable tricycle landing gear.