Chapters 1, 2, and 3 consist of brief definitions of hand tools, machine and power tools, and sheet metal operations--all of which are important to an Aviation Structural Mechanic. Chapters 4, 5, and 6 deal with aircraft metals--their properties and treatment. In chapter 7 the various types of aircraft fasteners are described and listed, and their use is discussed. Two chapters, then, are devoted to repair and inspection, and the remaining chapters deal with nonmetallic materials, welding, hydraulics and publications respectively.