Artikel 20

1. If either of the Contracting Parties considers it desirable to amend any provision of this Agreement, such amendment shall be agreed upon by the Contracting Parties in accordance with the provisions of Article 18 of this Agreement and shall be effected by an exchange of diplomatic notes. Such amendment shall enter into force in accordance with the provisions of Article 24 of this Agreement.
2. Notwithstanding the provisions of paragraph 1 of this Article, any amendments to the Annex to this Agreement may be agreed upon by the Aeronautical Authorities of the Contracting Parties, and confirmed through an exchange of diplomatic notes. Such amendments shall enter into force on a date to be determined in the diplomatic notes. This exception to paragraph 1 of this Article does not apply in case any traffic rights are added to the Annex.
3. This Agreement shall, subject to the necessary changes, be deemed to have been amended by those provisions of any international convention or multilateral agreement which becomes binding on both Contracting Parties.