Engine fault detection in a twin piston engine aircraft

Due to the inherent reliability of aircraft engines examples of engine faults are very rare. Hence, it is very difficult to devise mathematical models necessary for the fault detection. However, in case of twin engine aircrafts it is possible to detect potential engine faults by comparing parameters of both engines. In ideal case these parameters should be quite similar and their discrepancy could provide warning of the pending engine problem or failure. A method that uses statistically determined intervals is proposed.