37 Repair and maintenance of aerospace vehicles and component parts thereof; construction and installation of industrial buildings and test benches for aerospace vehicle parts, equipment and systems; repair of electric and electronic apparatus, instruments, systems, hardware and equipment for use in the aerospace field; repair, overhaul, servicing and maintenance of aerospace vehicle systems, equipment and parts and component parts thereof, including motors, engines, turbines, engine nacelles, reactors, thrusters, thrust reversers, braking systems, landing systems, wiring systems; under-wing repair, overhaul, servicing and maintenance services for all kinds of aerospace vehicle systems, equipment and parts; standardization, corrective maintenance and standard replacement of aerospace vehicle systems, equipment and parts; on-line round-the-clock assistance provided seven days a week for the repair, overhaul, restoration, servicing, maintenance and standard replacement of aerospace vehicle systems, equipment and parts; technical advice and assistance relating to the production, maintenance, repair, servicing of aeronautical vehicles and component parts thereof, including motors, engines, turbines, engine nacelles, reactors, thrusters, thrust reversers, aeronautical vehicles, braking systems, landing systems, wiring; repair of ancillary equipment and tools for aerospace vehicle systems, equipment and parts