Any surpluses generated must also be repaid in accordance with the internationally accepted principles for the collection of air navigation charges to airspace users.

Income was derived from landing and parking fees, air navigation charges, passenger service charges, terminal building concessions and rentals, fuel concessions, and the sale of excess power.

Its activities involve all gate-to-gate air navigation service operations: strategic and tactical flow management, controller training, regional control of airspace, safety-proofed technologies and procedures, and collection of air navigation charges.