With a Primary Governor Failure, what may happen to the prop RPM?

When a Primary Governor Failure occurs, the behavior of the prop RPM can change based on the position of the throttle lever. Specifically, if the throttle lever is not advanced all the way to the full forward position, the prop RPM may increase. This is because a governor's role is to maintain a consistent RPM by adjusting the pitch of the propeller blades.

In the case where the governor fails, it may not be able to regulate the pitch correctly, and if the throttle is not fully advanced, the propeller could end up in a state where it no longer maintains the intended RPM. Thus, there is an opportunity for the RPM to exceed normal operating levels since the control over the pitch is lost, meaning that the prop can spin faster.

Choosing this option reflects an understanding of how governor systems operate and how the throttle lever influences the prop RPM under a failure condition. Therefore, in the context of a Primary Governor Failure, it is plausible that the RPM can advance, contingent upon the position of the throttle lever.