Airspace Structure includes Control Area (CTA), ATS Routes, Terminal Control Area (TMA), Control Zone (CTR), ATC Sectors, Prohibited Area (P), Danger Area (D), and Restricted Area (R).

The general guidelines for the establishment of Controlled Airspace form, the harmonization and simplification of ATS airspace classification, ATS Routes and Sectorization, the design of Terminal Control Area (TMA), and the design of airspace restrictions and reservations should be taken into consideration.