42 Aircraft equipment design and aircraft interior design for the corporate aircraft industry, namely, developing and engineering aircraft and cabin furnishings, lighting, communication systems, in-flight entertainment equipment, fuel tank systems and power units, cabin shells, sidewalls and partitions, audio-visual equipment, flight deck instrumentation and instrumentation display components, global positioning equipment and traffic collision avoidance equipment, avionics systems; engineering services; product development services for others in the corporate aircraft industry; testing, analysis and evaluation of the goods and services of others in the corporate aircraft industry for the purpose of certification