Cause- pump failure, obstruction, or low oil level.
- 1. RPM above 115%- Reduce airspeed to 150KIAS minimum, and perform operation pitchlock prop
- 2. RPM below 115%- Advance PWR levers and increase TAS.
after steps 1 and 2, there are three outcomes. The prop is pitchlock without overspeed (perform operation pitchlock without overpeed), RPM remains onspeed (continue operation through landing evolution), or the prop remains offspeed (break out the book!!)