Method and a device for performing a check of the health of a turbine engine of an aircraft provided with at least one turbine engine

A method of automatically performing an engine health check for checking the health of at least one turbine engine of an aircraft, said method comprising an acquisition step (STP3) for acquiring at least one monitoring parameter (Ng, TET, T45, Tq, T1) of the engine and an evaluation step (STP4) for evaluating the health of said engine, wherein, during flight:

• determining whether the aircraft is flying in level forward flight;
• and
• verifying the stability of at least one monitoring parameter (Ng, TET, T45, Tq, T1) by:
• acquiring a measurement signal giving a measurement of at least one monitoring parameter (Ng, TET, T45, Tq, T1) of the engine in compliance with sampling defined by the manufacturer;
• performing first filtering of each signal by a high-pass filter over a long first duration (TPS1) and verifying that a first amplitude (A1) of the signal filtered in this way does not exceed a first threshold defined by the manufacturer;
• performing second filtering of each signal by a high-pass filter over a short second duration (TPS2) in parallel with said first filtering by a high-pass filter, and verifying that a second amplitude (A2) of the signal filtered in this way does not exceed a second threshold defined by the manufacturer, the second duration (TPS2) being less than the first duration (TPS1), and the second amplitude (A2) being less than the first amplitude (A1);
• and
• considering a monitoring parameter to be stable when said first amplitude (A1) is less than the first threshold and when said second amplitude (A2) is less than the second threshold;
• and
• triggering an acquisition step (STP3) automatically if each monitoring parameter is stable.