Which of the following can inspect and approve an engine major repair for return to service?

Propeller aerodynamic (thrust) imbalance can be largely eliminated by

Ice formation on propellers, when an aircraft is in flight, will

Basically, the indicator of a tachometer system is responsive to change in

Counterweights on constant-speed propellers are generally used to aid in

A powerplant using a hydraulically controlled constant-speed propeller is operating within the propeller’s constant-speed range at a fixed throttle setting. If the tension of the propeller governor control spring (speeder spring) is reduced by movement of the cockpit propeller control, the propeller blade angle will

Manually feathering a hydromechanical propeller means to

During operational check of an aircraft using hydromatic full-feathering propellers, the following observations are made:The feather button, after being pushed, remains depressed until the feather cycle is complete, then opens.When unfeathering, it is necessary to manually hold the button down until unfeathering is accomplished.

Grease used in aircraft propellers reduces the frictional resistance of moving parts and is easily molded into any form under pressure. This statement defines

Which of the following instrument discrepancies require replacement of the instrument?