Commercial Air Transport is defined as an aircraft operation involving the transport of passengers, cargo or mail for remuneration or hire. It includes scheduled and non-scheduled air transport operations. Aerial Work is defined as an aircraft operation in which an aircraft is used for specialized services such as agriculture, construction, photography, surveying, observation and patrol, search and rescue, advertisement, etc.[1] General Aviation includes commercial activities such as corporate and business aviation, as well as non-commercial activities such as recreational flying.