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5. Each Contracting Party shall extend to said offices and staff—nationals of the other Contracting Party—also any necessary assistance for the stay of such staff in the territory concerned.

Certificates of airworthiness, certificates of competency and licences issued by one Contracting Party or rendered valid and still in force shall be recognized as valid by the other Contracting Party.

Each Contracting Party reserves the right, however, to refuse to recognize, for the purpose of flight over its own territory, the certificates of competency or licences granted to its own nationals by the other Contracting Party or by a third country.

1. In a spirit of close cooperation, 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 this Agreement and its annex.

2. If either of the Contracting Parties considers it desirable to modify the terms of this Agreement, it may at any time propose in writing such modification to the other Contracting Party. Consultations between the two Contracting Parties concerning such proposed modification may be either oral or in writing and shall, unless otherwise agreed, begin within a period of sixty days from the date of the request made by one of the Contracting Parties.

3. If either of the Contracting Parties considers it desirable to modify any provision of this Agreement other than the annex, it may request consultations with the other Contracting Party. Modifications agreed between the Contracting Parties shall be confirmed by an exchange of notes through diplomatic channels, and shall enter into force on the day after the date on which the Contracting Parties have received notification from each other of the completion of their respective constitutional requirements. 4. If either of the Contracting Parties considers it desirable to modify the annex, such modification, if agreed between the Contracting Parties, shall be confirmed by an exchange of Notes through diplomatic channels and shall enter into force on the date of that exchange of notes.

1. If any dispute arises between the Contracting Parties relating to the interpretation or application of this Agreement, the Aeronautical Authorities of the Contracting Parties shall endeavour to settle it by negotiations between themselves.

2. If the Aeronautical Authorities fail to settle the dispute, the Contracting Parties will endeavour to settle it.

3. If the Contracting Parties fail to reach a settlement by negotiation, they may agree to refer the dispute for decision to some person or body; if they do not so agree, the dispute shall, at the request of either Contracting Party, be submitted for decision to a tribunal of three arbitrators, one to be nominated by each Contracting Party and the third to be appointed by the two so nominated.

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