Method of analyzing variations of at least one indicator of the behavior of a mechanism fitted to an aircraft

A method comprising:

• conducting measurements of a physical operating parameter of a first mechanism of a first aircraft during a mission of the first aircraft and of a physical operating parameter of a second mechanism of a second aircraft during a mission of the second aircraft, wherein the first aircraft belongs to a first operator, the second aircraft belongs to a second operator, the first aircraft and the second aircraft are of a fleet of aircraft of a same type, and the fleet of aircraft is of a same manufacturer;
• storing the measurements of the physical operating parameter of the first mechanism of the first aircraft in a first storage unit on-board the first aircraft and storing the measurements of the physical operating parameter of the second mechanism of the second aircraft in a second storage unit on-board the second aircraft;
• transmitting the measurements of the physical operating parameter of the first mechanism of the first aircraft stored in the first storage unit to a first communication station external to the first aircraft and transmitting the measurements of the physical operating parameter of the second mechanism of the second aircraft stored in the second storage unit to a second communication station external to the second aircraft, wherein the first communication station is installed on premises of the first operator and the second communication station is installed on premises of the second operator;
• transmitting the measurements of the physical operating parameter of the first mechanism of the first aircraft from the first communication station to an analysis center and transmitting the measurements of the physical operating parameter of the second mechanism of the second aircraft from the second communication station to the analysis center, wherein the analysis center is installed on premises of the manufacturer of the fleet of aircraft;
• generating, at the analysis center, a first indicator based on the measurements of the physical operating parameter of the first mechanism of the first aircraft and a second indicator based on the measurements of the physical operating parameter of the second mechanism of the second aircraft;
• analyzing, at the analysis center, variations of the indicators;
• and
• detecting for a potential problem in behavior of at least one of the mechanisms from the analysis of the variations of the indicators and alerting the manufacturer of the fleet of aircraft upon the potential problem being detected.