Airplane Propeller Mechanic (687) Enlisted Personnel

Removes, inspects, cleans, services, and replaces various types of airplane propellers.
Removes propeller dome assembly, disconnects propeller from engine, and "pulls" propeller from mounting. Examines blade surfaces for presence of dirt, scratches, nicks, and cracks. Polishes surface imperfections with fine abrasive paper. Sprays interior of hub and dome with lubricant. Checks propeller for proper tracking, and adjusts vertical and horizontal balance by adding small washers or other suitable weights at base of blades. In service or depot organization, performs various additional maintenance tasks such as the following: Tests hub concentricity and blade angle, using micrometers and gauges; locates internal defects in blades and other parts with a magnaflux; removes blades and disassembles and inspects control mechanisms.