The Philippine AIS receive and/or originate, collate or assemble, edit, format, publish/store and distribute aeronautical information/data concerning the entire territory of the State, or in other words - the whole Philippine Flight Information Region (FIR).
The Philippine FIR occupies one of the largest area in the region. Bounded to the north by Hong Kong, Taipei and Naha (Japan) FIRs, to the east by Oakland Oceanic FIR, to the south by Ujung Pandang and Jakarta FIRs, to the Southwest by Kota Kinabalu and Singapore FIRs and to the west by Ho Chi Minh FIR. Within the Philippine FIR are 3 terminal movement areas (TMAs), 16 prohibited/restricted/danger areas, 22 military/civilian exercises/training areas, 50 ATS and RNAV routes, 245 reporting points, 65 radio navigation aids, 54 instrument approaches, 7 international airports, 81 national airports, 324 heliports and private aerodromes, and 130 Air Traffic Service (ATS) and Air Navigations Service (ANS) operational facilities.
The AIS maintains and manages all related data within the Philippine FIR, and process it to an information essential to flight - to satisfy the needs of the users (pilots, document producing agencies, ATS, etc.). However, the effective functioning of AIS is dependent upon the co-operative effort of all other services, such as communications, aerodromes, ATS, etc., since raw data must be originated by such services. With this in mind, AIS is continually looking for ways of improving the lines of communications and harmonize working relationship.
AIS also maintains liaison with the International Civil Aviation Organization (ICAO), Philippine Atmospheric Geophysical and Astronomical Services Administration (PAGASA), Philippine Institute of Volcanology and Seismology (PHIVOLS), Bureau of Customs (Dept. of Foreign Affairs), Bureau of Immigration and Deportation (Dept. of Justice), National Quarantine office (Dept. of Health), Civil Aeronautics Board (CAB), Dept. of Tourism (DOT), and other international & national agencies.