42 Engineering services on behalf of third parties; engineering services for design of special vehicles; mechanical engineering research and development service; thermal engineering research and development service; research and development services in digital simulation; research and development services in the field of energy technology; design of vehicles and parts and components of aeronautical, rail and motor vehicles; engineering services for aerostructure design; engineering services for the design of furniture for aircraft interiors; design, development and implementation of computer programs and software concerning aeronautical, rail and motor vehicles; design and installation of electrical systems; engineering services with respect to information technology and data processing of computer systems; design and development of systems for data capture, extraction, processing, display and storage; design of programs for storing, analyzing and recalling data relating to the configuration of products or software; design and development of navigation systems; calculation services for the design of aeronautical products; design of tooling for the production of aerostructure parts; industrial engineering tests; performance tests for aircraft; engineering advisory services in the field of testing; technical information services relating to product configuration in the field of science and technology; quality control of services; quality testing of products for certification purposes