Computer software, computer programs, computers, data acquisition devices, data storage and retrieval apparatus, signal processors, spectrum analysers and data processing apparatus, all for use in aircraft control, maintenance, safety monitoring, fault detection, pilot warning, and operating systems; aircraft control, maintenance, safety monitoring, fault detection, pilot warning, and operating systems, namely, temperature gauges, pressure gauges, accelerometers, tachometers, stress measurement devices, torque sensors, optical sensors, electrostatic sensors, magnetic sensors, electronic sensors, debris detection devices, electrical measuring instruments, vibration detectors and analysers, propeller and rotor blade balancing and tracking instruments, fuel flow meters, fluid and air flow meters, timing devices, power measurement devices, engine intake and exhaust monitors, engine/transmission/rotor speed measurement devices, ground proximity meters, rotational speed meters, air speed meters, vertical velocity meters, altitude meters, roll, pitch and yaw rate meters, angle of bank meters, cockpit voice data recorders, pilot's head mounted display equipment, terrain sensors and indicators, hazard avoidance sensors and indicators, spatial disorientation sensors for pilots, flight data recorders, display panels, instrumentation panels, control panels

Computer programming, computer software design, aircraft control and monitoring systems design, avionic systems design, data processing systems design, all for others; research and consulting services, project development services, all relating to aircraft control, maintenance, safety monitoring, fault detection, pilot warning, and operating systems