Domestic Air Operator

Commercial air transportation within and between the 50 States and the District of Columbia. Includes operations of certificated route air carriers, Pan American, local service, helicopter, intra-Alaska, intra-Hawaii, all-cargo carriers and other carriers. Also included are transborder operations conducted on the domestic route segments of U.S. air carriers. Domestic operators are classified based on their operating revenue as follows: Major (over $1 billion); National ($100-1,000 million); Large Regional ($10-99.9 million); Medium Regional ($0-9.99 million). (DOE6)