This task list is intended for use in planning and/or evaluating a competency-based course in aircraft mechanics. The guide outlines the tasks entailed in 24 different duties typically required of employees in the following occupations: airframe mechanic, power plant mechanic, aircraft mechanic, aircraft sheet metal worker, aircraft electrician, propeller repair person, fuel system mechanic, aircraft environmental mechanic, aircraft hydraulics/pneumatics mechanic, nondestructive tester, avionics mechanic, aircraft instrument repair person, power plant electrician, and aircraft welder. The following are among the duties covered: performing aircraft weight and balance operations; performing ground operations; using maintenance publications and maintaining forms and records; applying coverings and finishes; welding; repairing sheet metal structures; maintaining various aircraft and engine systems; inspecting electrical and fire protection systems; and performing assembly and rigging operations. The occupational duty/task lists are the result of an extensive two-step development process in which information on current occupational requirements was gathered from such sources as consortia, trade associations, and current curriculum materials and was then synthesized by industry representatives, vocational instructors, and state-level representatives. (MN)