9 Scientific, optical, weighing measuring and checking (supervision) 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 engines; electronic calculators; electrical and electronic calculators for digital regulation of speed and fuel flow; electronic calculators for braking, temperature, pressure, vibration analysis and fight control; electrical, electronic and magnetic sensors for measuring pressure, speed, displacement, temperature, position, vibration in the field of aeronautics and space; electronic cards for processing images; electronic apparatus for processing data; computer operating and calculating software for simulation, running and storage of test programs; computer program and software for exploiting test benches and other measuring apparatus; 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 their modules and parts; electrical and electronic devises and equipment, namely, computer hardware, computer monitors on board aircraft or engines; apparatus for recording, transmission, reproduction of sound, images or data; computer programs and software for providing information on aircraft engines, operation, maintenance, servicing and repair in relation to aircraft engines and their modules and parts; computer software for management of the operation and testing repair, overhaul, servicing, maintenance and reconditioning operations conducted on an aircraft engine and on its modules and parts; Digital media, namely, pre-recorded DVDs and CDs featuring information concerning aircraft engines; Electronic database in the field of aircraft engines, their operation, the repair, overhaul, servicing maintenance and reconditioning of engines, modules and parts of aircraft engines, recorded on computer media; test benches comprised of test cell engineering for aero-engines; all these goods used and/or intended for the aeronautical and space field