electronic inspection apparatus for detecting flaws and cracks in aircraft blades of the helicopter and propeller type; electronic apparatus operable to diagnose engine performance and detect impending malfunctions; electronic flight and automatic flight controls; and electric switches for helicopter control panels

aircraft, namely, airplanes and structural parts thereof, namely, wings, bodies, tails, control surfaces, landing gear, interconnecting members, propellers and structural parts thereof; rotary wing airplanes and structural parts thereof; helicopters, structural parts thereof, namely, air frames, landing gears, main and tail rotors, hydraulic pumps and dynamic parts thereof, namely, constituent parts and components of the main rotor assembly and tail rotor assembly that provide aerodynamic control of the helicopter during flight operations, the constituent mechanical and hydraulic parts and components of the rotor control system that provides inputs in the nature of collective and/or cyclic pitch inputs to the main rotor assembly and the tail rotor assembly for control of the flight operations of the helicopter, and the constituent parts and components of the transmission system that transmit power from the helicopter engines to the main and tail rotor assemblies to power flight operations of the helicopter; and military helicopters (excluding spare parts and support and maintenance equipment thereof)

providing maintenance support for helicopter operations

providing training in the field of piloting procedures and aircraft maintenance

providing engineering and technical support services, namely, technical supervision, inspection, research, and consulting in the field of helicopter operations