Properties:

A propeller designed to provide thrust for a fixed or tilt wing aircraft. It may be of solid or built-up construction; constant or controllable speed type; adjustable, fixed or variable pitch design with reversing and/or feathering capabilities during aircraft operation. Variable pitch propellers have integral facilities for changing the pitch angle of the blades while aircraft is in flight. Excludes hub-blade assembly, propeller, aircraft. See also test club.