The indications of an engine malfunction, either a partial power loss or complete power loss, are a left yaw (caused by the reduction in torque applied to the main rotor), a drop in engine RPM (NG) and (NP), a drop in rotor RPM (NR), LOW RPM ROTOR warning message on MFD, low RPM audio, ENGINE OUT warning message on MFD, engine out audio alarm, and a change in engine noise.