This document is one of a series of rate training manuals designed to provide enlisted personnel of the Navy or Naval Reserve with the background information that will be useful in preparing for advancement in Aviation Structural Mechanics S (AMS) rating and to present necessary information for the proper performance of duties in that rating. The manual outlines the areas of Aviation Structural Mechanic S rating; aeronautic publications; aircraft materials; airframe construction; sheet-metal working machines, tools, and procedures; aircraft hardware; aircraft damage repair; airframe maintenance; landing wheels, tires and tubes; tubing, flexible hose, and clamps; corrosion control; and line operations and maintenance. Numerous illustrations, diagrams, photographs, and data tables are included. (KP)