12 Aviation components, namely, actuators, actuation systems for mechanisms or valves comprising of stepper motors, torque motors, metering valves, head regulator valves, pressurizing valves, solenoid valves, high pressure relief valves, permanent magnet alternators (PMA), and associated bearings and screens, hydraulic actuators, hydraulic valves manifolds, hydraulic accumulators, hydraulic reservoirs, hydraulic fuses, hydraulic pumps, hydraulic motors, integrated hydraulic power packs, and electromechanical linear and rotary actuators, gearboxes, control units comprising of mechanical and electrical systems and components in the nature of microprocessors, memory chips, resistors, capacitors, and transorbs for controlling fuel systems, environmental systems and engine actuation systems, thermal products, namely, vapor cycle cooling systems comprising of condensers, evaporators, fans, circulating pumps with electric motors, compressors with electric motors, expansion valves, flow control valves, filter dryers, accumulators, and temperature sensors, nose wheel power steering units comprising of electro-hydraulic servo valves, rotary variable differential transformers (RVDTs) and hydraulic motors, uplock systems comprising of uplocks for landing gear, doors, and mechanisms for signaling uplock status; landing gear for aircraft; airplanes and structural parts therefor