The following are major activities of Aeronautical Engineering except?

The major activities of Aeronautical Engineering primarily revolve around the design, development, testing, and manufacturing of aircraft and their systems. This field heavily emphasizes engineering principles applied to the creation and improvement of aircraft technology.

The process of manufacturing aircraft is a direct application of aeronautical engineering principles, involving detailed design specifications and the use of various materials and technologies. Likewise, research and development play a crucial role in advancing aeronautical technologies, enhancing performance, safety, and efficiency in aircraft design, which is a core function of engineers in this field. Education and training are also integral, as they prepare new engineers and ensure that current professionals stay updated with the latest advancements and regulatory requirements.

In contrast, airline operations, while crucial to the aviation industry, are not directly a part of aeronautical engineering itself. This area primarily focuses on the management and logistics of flying aircraft and handling passengers, rather than the engineering aspects involved in the design and manufacturing of the aircraft. Thus, it is correctly identified as not being a major activity of aeronautical engineering.