Repair heli-rotors, landing gear, and flight systems.
Repairs and maintains elevators, escalators, and dumb-waiters to meet safety regulations and building codes, using handtools, power tools, test lamps, ammeters, voltmeters, and other testing devices: Locates and determines causes of trouble in brakes, motors, switches, and signal and control systems, using test lamps, ammeters, and voltmeters. Disassembles defective units and repairs or replaces parts, such as locks, gears, cables, electric wiring, and faulty safety devices, using handtools. Installs push-button controls and other devices to modernize elevators. Lubricates bearings and other parts to minimize friction.