Aircraft modification services; technical consultancy and assistance related to the modification of aircraft and aircraft parts

Providing of food and drink; temporary accommodation; medical, hygienic and beauty care; veterinary and agricultural services; legal services; scientific and industrial research; computer programming; technical consultation and research, writing, design, and testing of new products for others; computer services, including, providing on-line books, manuals, magazines, guides, forms, illustrations and technical data packages in the field of aircraft, aircraft parts, avionics, and maintenance, operation, repair, and training associated with aircraft and aerospace products, parts and support equipment; technical consultancy and assistance related to the design, certification, manufacture and operation of aircraft and aircraft parts; and making reservations and bookings for temporary lodging