It's not the aircraft, it's the engine. Boeing 787s have been grounded recently because problems with Trent 1000-C have been increasing. Mainly compressor blad

It's not the aircraft, it's the engine. Boeing 787s have been grounded recently because problems with Trent 1000-C have been increasing. Mainly compressor blade durability. Modern jet engines like Trent 1000 from Rolls-Royce have Full Authority Digital Engine Control (FADEC). It comes with the engine and there are no manual overrides. The computer system runs the engines and if it fails the engine fails almost instantly. Before the flight pilot sets flight parameters to flight management system (FMS) and FMS communicates them to FADEC in the engines. FADEC runs the engines and 'micromanages' the system in different phases of the flight. There is large number of parameters and engine health monitoring and diagnostics going on. Most of it is not the responsibility of the aircraft manufacturer. Engine sends data to Rolls-Royce.