The development of international law, especially the 1982 UNCLOS, has had a very significant impact on the development of air law as a result of the expansion of territorial boundaries, but the area of the territorial sea is considered insufficient to support air defense. The principle of government in full and exclusive air space regulated in Article 1 of the 1944 Chicago Convention authorizes the state to manage air space above its territory. This research will discuss the determination of ADIZ in Indonesia and whether in the future it is necessary to revise the ADIZ that has been determined. Some countries designate ADIZ outside their territorial territory with the aim of being an air defense support area because with sufficient distance it is expected to provide sufficient time for the coastal state to identify aircraft that will enter its territory. ADIZ is a sub-system of the air defense system that serves as an identification zone for unscheduled aircraft that will enter Indonesian airspace. Indonesia had established an ADIZ in the 1960s covering Java, Madura, Bali and parts of Sumatra, but could not function in support of the air defense system because it was not equipped with facilities and infrastructure and was not supported by procedures for entering the ADIZ which had to be published internationally. Indonesia's ADIZ concept capable of supporting air defense systems will be set above the EEZ area with operational determinations adjusted to the factors of threat arrival. ADIZ requires the support of facilities and infrastructure such as fighter aircraft, radar, communication systems and civil-military cooperation as well as the publication of aircraft procedures entering the internationally published Indonesian ADIZ.