Subject to the dangers from exposure to toxic fumes, high pressure air and fluids, fast actuating metal aircraft surfaces such as leading gears, speed brakes, missile doors and flaps, engine noise, heat blast, intake suction, rotating propellers, explosive munitions, electrical voltage, cartridge actuating device, liquid oxygen, fire or explosion of aircraft fuels, lubricants, paints, solvents and other hazardous material. Works directly on the aircraft and its components, fulfilling such tasks as removal, repair, modification and installation of parts and assemblies, such as frames, stringers, longerons, bulkheads, beams, ribs, spars, skin, cowling, brackets, faring, access doors, panels and other related items.