Automatic Flight Control Systems, Inertial Navigation and Compass Systems, Attitude Systems, Lead Acid, NiCad and Carbon Batteries, Pitot, and Static Systems, Interior and Exterior Lighting Systems, Electro hydraulics and Electromechanical Systems, Warning and Detection Systems, Instruments of Flight, Capacitance Fuel Quantity and Transfer Systems. Repairs, replaces, and rebuilds aircraft structures of moderate difficulty, such as wings, fuselage, surface controls and functional components to include rigging, plumbing and hydraulic units utilizing hand tools, power tools, machines, and equipment such as shears, sheet metal brake, welding equipment, rivet guns and drills.