9 Scientific, optical, weighing, measuring and checking apparatus and instruments, namely, electrical and/or electronic brake controllers, suspension damper and stabilization control electronics, electronic landing gear controls, fire extinguishers, solenoid valves, solenoid assemblies, servomechanisms in the nature of controlled volume electrical pumps, test beds for these servomechanisms, and micro-processor based electronic controllers for aircraft engine; electrical and electronic apparatus and instruments, namely, potential calculators, calculators for digital regulation of speed and fuel flow in the nature of full authority digital engine controls, braking, temperature, pressure, vibration analysis and flight control calculators; electrical, electronic and magnetic sensors for pressure, speed, displacement, temperature, position, vibration; encoded electronic chip cards containing programming for processing flight parameters; electronic systems and equipment in the nature of data processing equipment, whether on board or not, for acquiring and processing data; calculation and operating software for simulation, running and storage of aircraft test programs; monitoring systems comprised of computer hardware and software for evaluation of security and performance as well as of maintenance and servicing requirements for aircraft engines and/or their modules and parts; electrical and electronic devices and equipment in the nature of computer hardware, computer monitors on board aircraft or engines, fixed on test benches or portable for ground interventions for maintenance, monitoring reading and interpreting data from computers and sensors; data processing equipment and computers; apparatus for recording, transmission, reproduction of sound, images and/or data; software, particularly computer programs and software providing information on aircraft engines, operation, maintenance, servicing and repair in relation to aircraft engines and/or their modules and parts; software for operation management and repair, overhaul, servicing, maintenance and reconditioning operations conducted on an aircraft engine and/or on its modules and parts; magnetic, optical and digital recording media, CD-ROMs, DVDs all featuring information concerning aircraft and helicopter engines; electronic databases recorded on computer media, containing, in particular, information concerning aircraft engines, their operation, the repair, overhaul, servicing, maintenance and reconditioning of engines, modules and parts of aircraft engines; test benches comprised of electronic apparatus and control instruments for automatic testing of electronic equipment, electric equipment and avionics; all these goods used and/or intended for the aeronautical field