A method for assisting piloting of an aircraft by monitoring at least one operational criterion of a mission of the aircraft during execution of the mission, the method being implemented by an electronic assistance device and comprising, for each operational criterion criterion:
- determining a value of each characteristic variable of a set of characteristic variable(s) associated with the operational criterion, the set of characteristic variable(s) being specific to each operational criterion and predefined for each operational criterion), each characteristic variable being determined from at least one avionics variable, each avionics variable being acquired from a source selected from an avionics system, a sensor and a database;
- estimating a value of the operational criterion on the basis of based on each determined value of a characteristic variable associated with the operational criterion and by implementing an artificial intelligence algorithm;
- calculating a deviation between the estimated value of the operational criterion and a desired value of the operational criterion, and of a characteristic variable, known as the causal variable, which is a main cause of the deviation, the causal variable being calculated using the artificial intelligence algorithm;
- and
- if the calculated deviation is greater than a predefined threshold, displaying, on a display system, the estimated value of the operational criterion, the calculated deviation and an indication of the causal variable, and performing at least one action selected from the group consisting of issuing an alert as a function of the calculated;
- deviation, and generating an instruction to control an avionics system as a function of the estimated value of the operational criterion.