A method (11, 21) for checking a level of damage of at least one part of an aircraft in at least one flight phase, characterized in that the method (11, 21) comprises at least: • a collection step (12, 22) for receiving data representative of measurements of at least one flight parameter chosen from the group comprising a position, a travel speed, an acceleration and an environmental parameter of the aircraft, the data being generated during a mission of the aircraft by at least one sensor embedded on the aircraft, each piece of data corresponding to an entry point representative of the at least one flight parameter in a multidimensional space; • a projection step (14, 24) for projecting, according to a determined process, each entry point of the multidimensional space onto a previously constructed map (15, 25) in order to form an image point (Pi), the map (15, 25) comprising at least two separate zones (16 and 17, 26 and 27) defined by closed contour lines (116 and 117, 126 and 127), each zone (16 and 17, 26 and 27) being representative of a flight phase of the aircraft chosen from the group comprising an approach phase, a landing phase, a hovering flight phase, a low-speed maneuvering phase, a take-off phase, a descent phase, a climbing phase, a ground phase, a turning phase, a level flight phase, a fixed-point turning phase, a recovery phase, a taxiing phase and a transition phase; • an identification step (18, 28) for identifying, for each image point (Pi) an image zone (Zi) from the at least two separate zones (16 and 17, 26 and 27) in which the image point (Pi) is located; and • an analysis step (19, 29) for counting, for the part considered and for the flight phase considered, the level of damage to the part corresponding to the product of a predetermined coefficient associated with the flight phase multiplied by the total duration of use of the part corresponding to this same flight phase, the total duration of use of the part in the flight phase being calculated beforehand, the flight phase corresponding to the image zone (Zi) identified among the at least two separate zones (16 and 17, 26 and 27) in the identification step. • a collection step (12, 22) for receiving data representative of measurements of at least one flight parameter chosen from the group comprising a position, a travel speed, an acceleration and an environmental parameter of the aircraft, the data being generated during a mission of the aircraft by at least one sensor embedded on the aircraft, each piece of data corresponding to an entry point representative of the at least one flight parameter in a multidimensional space; • a projection step (14, 24) for projecting, according to a determined process, each entry point of the multidimensional space onto a previously constructed map (15, 25) in order to form an image point (Pi), the map (15, 25) comprising at least two separate zones (16 and 17, 26 and 27) defined by closed contour lines (116 and 117, 126 and 127), each zone (16 and 17, 26 and 27) being representative of a flight phase of the aircraft chosen from the group comprising an approach phase, a landing phase, a hovering flight phase, a low-speed maneuvering phase, a take-off phase, a descent phase, a climbing phase, a ground phase, a turning phase, a level flight phase, a fixed-point turning phase, a recovery phase, a taxiing phase and a transition phase; • an identification step (18, 28) for identifying, for each image point (Pi) an image zone (Zi) from the at least two separate zones (16 and 17, 26 and 27) in which the image point (Pi) is located; and • an analysis step (19, 29) for counting, for the part considered and for the flight phase considered, the level of damage to the part corresponding to the product of a predetermined coefficient associated with the flight phase multiplied by the total duration of use of the part corresponding to this same flight phase, the total duration of use of the part in the flight phase being calculated beforehand, the flight phase corresponding to the image zone (Zi) identified among the at least two separate zones (16 and 17, 26 and 27) in the identification step.