 For a time, the Paris was the only twin-jet civil aircraft and there was no direct competitors available.In response to this interest, senior design staff at the French company spent considerable time in the United States during the development phase of the programme.Reportedly, by 1955, Beechcraft had requested that the Paris, installed with the latest model of the Marboré engine, be dispatched to North American to perform demonstration flights totalling 500 flight hours.