Performed troubleshooting to diagnose and fix malfunctions of flight controls, engines, fuel systems, pneumatics, systems, components, and controls McDonnell Douglas 500 helicopters models 369 C/D/FFRemoved installs or replaced aircraft subsystem assemblies such as engines, rotors, gearboxes, transmissions, and mechanical flight controlsCompleted maintenance forms and records in compliance with FAA rules and regulations and local company policies and proceduresAbility to read and interpret Aircraft Manuals and Illustrated Parts Catalogues.Determined airworthiness of aircraft and components in accordance with established procedures and Federal Aviation Regulations