What method is used to manually feather a propeller?

To manually feather a propeller, the correct method involves moving the propeller control into the feathering detent. This action engages a mechanism within the propeller that changes the blade angle to minimize drag and reduce the effects of windmilling, which is crucial for safety during engine failure situations. Feathering is primarily used on multi-engine aircraft to prevent unnecessary drag from a propeller that is not functioning, allowing the aircraft to maintain better performance with the remaining operational engine(s).

The other methods, while related to engine management, do not achieve the specific function of feathering the propeller blades. Simply turning the propeller by hand would not engage the feathering mechanism and could be unsafe. Adjusting the throttle and mixture controls serves a different purpose related to engine performance and does not impact propeller pitch. Shutting down the engine might stop the propeller from spinning but does not actively feather it; feathering is a controlled process that helps manage the aircraft’s aerodynamics effectively during flight situations.