PROCEDE DE DETECTION D'UN DEFAUT MECANIQUE D'UN GENERATEUR DE GAZ D'UNE TURBOMACHINE D'UN AERONEF ET DISPOSITIF DE MISE EN ŒUVRE CORRESPONDANT

The invention relates to a method for detecting a mechanical defect in an aircraft gas generator or in an apparatus mounted onto theon an accessory gearbox connected to said generator. Said method is characterized in that it includes: a step (E1) for of creating, before commissioning of the aircraft, a reference chart associating including a nominal torque of said generator, corresponding to nominal operation without mechanical defect, with for a plurality of modes of predetermined operation, a step (E2) for of determining, after flying the aircraft, an actual resistingant torque of said generator for setting a predetermined- mode setting, a step (E3) for of calculating a deviation between said actual torque and the nominal torque of said reference chart associated with the mode of operation nearest to said set mode setting, and a step (E4) for signaling a mechanical defect in said generator or in at least one apparatus if said calculated deviation is greater than a predetermined threshold.