The design, manufacture, and marketing of general aviation aircraft is a highly sophisticated business. Since technical knowledge is available to all companies, some other means must be found to stay competitive in the market place.Styling and its related functions have been major areas used by the automotive industry to achieve this advantage. General aviation has begun to follow this example and must place greater emphasis on it in the future.Today most buyers of executive airplanes expect and even demand a personalized vehicle. This can be done on a production line basis while maintaining a reasonable price structure and delivery schedules.Every advantage must be taken to increase production quantities by commonality between models. One of the areas in which this can be done is seating, with model distinction being obtained by the addition of trim.