Aviation Structural Mechanics (AM) maintain aircraft airframe and structural components flight surfaces and controls hydraulic and pneumatic control and actuating systems and mechanisms, landing gear systems, air conditioning, pressurization, visual improvement, oxygen and other utility systems, egress systems including seat and canopy ejection systems and components, fabricate and repair metallic and nonmetallic materials; perform aircraft daily, special, hourly, and conditional inspections, supervise operation of airframe work centers; maintain aircraft metallic and non-metallic structures including fuselages, fixed and moveable flight surfaces, tail booms, doors, panels, decks, empennages, and seats (except ejection seats); flight controls and related mechanisms; hydraulic power storage and distribution systems including main (primary and secondary), auxiliary (utility), and emergency systems; hydraulic actuating subsystems; landing gear systems including wheels and tires, brakes, and emergency systems; pneumatic power, storage and distribution systems; hoists and winches, wing and tail fold systems; launch and arresting gear systems; hydraulic component repair and test; and perform aircraft daily, special, hourly, and conditional inspections.

Aviation Electronics Technicians (AT) troubleshoot and repair digital computers; fiber optics; infrared detection; radar systems; electricity generation systems; laser electronics; navigation systems; communications equipment; electrical power distribution; pressure indication systems; electric transformers and circuits, employing the latest test equipment and procedures. Knowledge and skills also include equipment operational checkout, corrosion control, scheduled maintenance, and component removal/repair/replacement.

EM's are responsible for the operation of a ship's electrical power generation systems, lighting systems, electrical equipment and electrical appliances. The duties include installation, operation, adjustment, routine maintenance, inspection, test and repair of electrical equipment. EM's also perform maintenance and repair of related electronic equipment.