Abstract: A method for monitoring an aircraft engine during flight, which includes the steps of: for at least one characteristic frequency of the operation of the engine, measuring at least one synchronous vibration level value; for at least one module of the engine, estimating an out-of-balance value of the module in accordance with the one or more vibration level values measured and at least one sensitivity coefficient; estimating a balancing margin of the module in accordance with the out-of-balance value of said module and a maximum threshold; (d) estimating a remaining number of flights of the aircraft prior to balancing and/or a quality indicator of a preceding balancing operation in accordance with the one or more estimated balancing margins and data representing past balancing operations of the engine.

Abstract: A method for monitoring an aircraft thrust reverser having stowable doors, the thrust reverser being a reverser having hydraulic actuators equipped with switches arranged to each return a data item on the position of the doors, the engine including a computer configured to make measurements of a representative parameter of the position of the switches based on the data returned by the switches, includes computation of one or a plurality of statistical indicators of the parameter measured and an analysis of the temporal progression of the statistical indicator(s) computed. The invention also applies to a computer program for the implementation of this method.

Abstract: A method for monitoring an aircraft engine during flight, which includes the steps of: for at least one characteristic frequency of the operation of the engine, measuring at least one synchronous vibration level value; for at least one module of the engine, estimating an out-of-balance value of the module in accordance with the one or more vibration level values measured and at least one sensitivity coefficient; estimating a balancing margin of the module in accordance with the out-of-balance value of said module and a maximum threshold; (d) estimating a remaining number of flights of the aircraft prior to balancing and/or a quality indicator of a preceding balancing operation in accordance with the one or more estimated balancing margins and data representing past balancing operations of the engine.

Abstract: A method for monitoring an aircraft thrust reverser having stowable doors, the thrust reverser being a reverser having hydraulic actuators equipped with switches arranged to each return a data item on the position of the doors, the engine including a computer configured to make measurements of a representative parameter of the position of the switches based on the data returned by the switches, includes computation of one or a plurality of statistical indicators of the parameter measured and an analysis of the temporal progression of the statistical indicator(s) computed. The invention also applies to a computer program for the implementation of this method.