General Aviation also includes such occupations as agricultural spraying, pipeline, power line maintenance, forestry and wildlife management, law enforcement, and flight instruction. Most pilots, even of large aircraft, received their initial instruction in small single-engine airplanes. | General Aviation also includes such occupations as agricultural spraying, pipeline, power line maintenance, forestry and wildlife management, law enforcement, and flight instruction. Most pilots, even of large aircraft, received their initial instruction in small single-engine airplanes. |