What does the Feather Inhibit button do?

• A. Slows the feathering process during shutdown to minimize rock damage on the blades
• B. Speeds up feathering during shutdown
• C. Keeps the blades feathered at all times
• D. Disables feathering entirely

Answer: (A)

Feathering is how the propeller blades are moved to a high-pitch (feather) to minimize drag when an engine isn’t producing power. The Feather Inhibit function slows that transition during shutdown, delaying or reducing how quickly the blades go to full feather. This helps reduce the sudden loads and blade rocking that can occur as the prop slows and wind or inertia acts on the blades, protecting the blades from damage during the shutdown sequence. It’s not a permanent state, and it doesn’t disable feathering entirely or force an immediate feathering.