140. Rotation of the controllable-pitch propeller (CPP) blades is achieved through axial movement of what component in the hub body assembly?

Axial movement of the crosshead within the hub converts linear motion into rotation of the controllable-pitch propeller blades. The servomotor piston provides force, while the crank pin ring and sliding block are parts of the linkage; the crosshead is the component whose axial movement directly rotates the blades.