 In spite of these changes, the Paris still retained the favourable flying characteristics and did not entirely foreclose its use as a trainer aircraft.The Paris differed from the majority of liaison aircraft then in service by its use of jet propulsion, instead of a turboprop or piston engine.According to M. Vichou, the head of the design department of Morane-Saulnier, the decision to adopt a pair of Turbomeca Marboré jet engines had been determined to be the superior option available; studies found that a single turboprop engine capable of providing at least 2,000 hp was necessary to produce a comparable performance, which would have resulted in the additional complications of appropriately accommodating a fairly large propeller in the design.