Artikel 14

1. If either of the Contracting Parties considers it desirable to modify any provision of the present Agreement, it may request a consultation with the other Contracting Party. This consultation must begin within sixty (60) days from the date of receipt of the request. Any modification of this Agreement shall be agreed to in writing by the two Contracting Parties and shall come into force as soon as the two Contracting Parties have notified each other of the completion of the procedures constitutionally required for the entry into force of international agreements.
2. Modifications to the Annex to the present Agreement may be agreed upon directly by the Aeronautical Authorities of the two Contracting Parties. These modifications shall come into force after being confirmed by an exchange of diplomatic notes.