A method for managing at least one aircraft, said aircraft, in a first configuration, being configured to perform a first category of flights not requiring any auxiliary power unit and, in a second configuration, to perform a second category of flights requiring at least one auxiliary power unit, the aircraft comprising a fuselage that has a main portion;
- wherein the managing method comprises:
- removably mounting, aft of the main portion of the fuselage, alternately a lightened first tail cone not comprising any auxiliary power unit or a second tail cone comprising the at least one auxiliary power unit, depending on the first or second category of flights to be performed by the aircraft.