Artikel 9

1. Certificates of airworthiness, certificates of competency and licenses issued, or rendered valid, by one Contracting Party and still in force, shall be recognized as valid by the other Contracting Party for the purpose of operating the Agreed Services provided that such certificates or licenses were always issued, or rendered valid, pursuant to and in conformity with the minimum standards established under the Convention.
2. Each Contracting Party reserves the right, however, to refuse to recognize, for flights above its own Territory, certificates of competency and licenses granted to its own nationals by the other Contracting Party.
3. If the privileges or conditions of the licenses or certificates, issued or rendered valid by one Contracting Party, permit a difference from the standards established under the Convention, whether or not such difference has been filed with the International Civil Aviation Organization, the Aeronautical Authority of the other Contracting Party may, without prejudice to the rights of the first Contracting Party under paragraph 2 of Article 10 of this Agreement, request consultations with the Aeronautical Authority of the other Contracting Party in accordance with Article 18 of this Agreement, with a view to satisfying themselves that the practice in question is acceptable to them. Failure to reach satisfactory agreement shall constitute grounds for the application of paragraph 1 of Article 4 of this Agreement.