<P> This is a list of airports in South Africa, grouped by type and sorted by location . </P> <P> Most of the largest airports are owned by the Airports Company of South Africa these include all the international airports except for Lanseria International Airport which is privately owned . Most other public airports are owned by local municipalities although there are also a significant number of privately owned airports . Some South African Air Force bases share the airfields of public airports . In the case of Air Force Base Hoedspruit part of the base has been leased to a private company as a public airport . </P> <Table> <Tr> <Td> Map all coordinates using: OpenStreetMap Google Maps </Td> </Tr> <Tr> <Td> Download coordinates as: KML GPX </Td> </Tr> </Table>

What three categories can south africa's airports be divided
find me the text answering this question