[1] The Fleuret was designed and built to compete in an order for the French Air Force for a two-seat jet trainer.

[2] It was a side-by-side low mid-wing cantilever monoplane with a T-tail and powered by two 800 lbf (3.6kn) Turbomeca Marboré II turbojets.

The audio memoirs of IAF Wing Commander Donald George Michael detail how Morane-Saulnier's Chief Test Pilot, Monsieur Jean Cliquet, and a team of 4 or 5 technicians accompanied the aircraft.

The assigned IAF senior pilots were impressed with the MS.755 as a trainer, and ran a series of flight instruction tests where low time students with only 10 hours total flying experience transitioned to the jet and soloed with no problems.

During a flight early in the program, the two IAF senior pilots caused concern with Morane-Saulnier personnel when they pulled 8.5 Gs out of a dive.