Intensified studies of all airframe systems and components are conducted during this course. Focus is on hydraulic and pneumatic systems with the physical laws and properties of liquids examined and applied in lab sessions. Electrical systems prevalent in airframe structure are studied in detail. Theoretical and practical knowledge is taught on specific systems such as retractable landing gears; cabin atmosphere; and fire protection. Studies are made of fuel; de-ice, anti-ice and rain control; as well as positions and warning systems.

Other systems examined include communications; gyroscopic and pilot static pressure navigation and flight instrumentation.

This course addresses airframe structures, the varieties prevalent in their designs and methods of construction and associated materials. Beginning with basic wood frames covered with fabric and dope, such as found in early airplanes, the student progresses through evolutionary concepts represented by designs from welded tubular truss to monocoque and semi-monocoque fuselages, from wood rib and spar wing structures to modern honeycomb sandwich core construction using metals and fiberglass.

Special emphasis is placed on sheet metal structures, metal bonding and composite repair most prevalent in modern aircraft, together with aircraft finishes. Rigging control surfaces and assembling structural components is presented in depth.

A singularly important responsibility every technician faces throughout his or her career is regularly scheduled inspections on all airplanes. These inspections are conducted in strict compliance with Federal Aviation Regulations and manufacturer's specifications and are treated in great depth and scope during this phase of training.