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(1). In a spirit of close co-operation, the aeronautical authorities of the Contracting Parties shall consult each other from time to time with a view to ensuring the implementation of, and satisfactory compliance with, the provisions of the present Agreement and shall also consult when necessary to provide for modification thereof.
(2). Either Contracting Party may request consultation, which may be through discussion or by correspondence and shall begin within a period of sixty (60) days of the date of the request, unless both Contracting Parties agree to an extension of this period.
(3). Any amendment or modification of this Agreement agreed by the Contracting Parties, shall come into effect on a date to be determined in an exchange of diplomatic notes.
(4). Any amendment or modification of the Annex to this Agreement shall be agreed upon in writing between the aeronautical authorities and shall take immediate effect.