DAFIF

DAFIF diagram of Ottawa International Airport

The Digital Aeronautical Flight Information File or DAFIF (/ˈdfɪf/) is a comprehensive database of up-to-date aeronautical data, including information on airports, airways, airspaces, navigation data, and other facts relevant to flying in the entire world, managed by the National Geospatial-Intelligence Agency (NGA) of the United States.