The Republic of Indonesia comprises 17,000 islands in Southeast Asia and Oceania.
Indonesia shares land borders with Papua New Guinea, East Timor, and Malaysia.
Other neighboring countries include Singapore, Philippines, Australia, and the Indian territory of the Andaman and Nicobar Islands.
Indonesia had 673 airports in 2013, ranging from grand international airports to modest unpaved airstrips on remote islands or inland interior areas located throughout the archipelago.
Based on the 2009 Aviation Law, the government had to transfer air navigation service management from airport operators to a non-profit institution by January 2012 to improve Air traffic services (ATS).