 The Aeronautics Division, formerly the Massachusetts Aeronautics Commission, administers state financing of its airports; inspects and licenses airports and landing pads; registers aircraft based in Massachusetts as well as aircraft dealers, regulates airport security, safety, and navigation; and is responsible for statewide aviation planning.The Department of Transportation does not own any airports; the state-owned airports are controlled by the independent Massachusetts Port Authority (which shares its headquarters with the Aeronautics Division).Government regulation of aviation in the United States is dominated by the Federal Aviation Administration.