Nature, terms and conditions.
Section 11
SEC. 11. Nature, terms and conditions.—A Certificate of Public Convenience and Necessity is a permit issued by the Board authorizing a person to engage in air commerce and/or air transportation, foreign and/or domestic. Any permit may be altered, amended, modified, suspended, cancelled or revoked by the Board in whole or in part, upon complaint or petition or upon the Board's initiative as hereinafter provided, whenever the Board finds such action to be in the public interest. There shall be attached to the exercise of the privileges granted by the permit, or amendment thereto, such reasonable terms, conditions or limitations as, in the judgment of the Board, the public interest may require. No permit shall confer any proprietary, property, or exclusive right in the use of any air space, civil airway, landing area or government air-navigation facility. The permit shall, among others, specify the terminal and intermediate points, if any, between which the air carrier is authorized to operate; the service to be rendered; the time of arrival and departure at each point, and the frequency of flights: Provided, That no change in routes, rates, schedules, or frequency nor supplemental or additional flights to those covered by an Air Commerce Permit or franchise shall be effected without prior approval of the Civil Aeronautics Board. Insofar as the operation is to take place without the Philippines, the permit shall designate the terminal and intermediate points only insofar as the Board shall deem practicable, and otherwise shall designate only the general route or routes to be followed. No carrier shall abandon any route, or part thereof for which a permit has been issued, unless upon findings by the Civil Aeronautics Board that such an abandonment is uneconomical and is in the public interest.