54 STAT.] NEW ZEALAND-CERTIFICATES OF AIRWORTHINESS Ja 3 1940 2273 ArTICLE VI-COMPULSORY AND NON-COMPULSORY MODIFICATION (a) As used in this Arrangement, the term "compulsory modifi- cation" means a modification of an aircraft Unit required by the competent aeronautical authorities of the United States. The term "non-compulsory modification" means a modification approved, but not required, with respect to an aircraft Unit, by the competent aeronautical authorities of the United States. (b) The competent aeronautical authorities of the United States shall arrange for the effective communication to the competent aero- nautical authorities of New Zealand of the Particulars of compul- sory modifications affecting aircraft Units of such make and model as have been imported under this Arrangement. (c) The competent aeronautical authorities of the United States shall, to the extent that they may from time to time deem practicable and desirable, advise the competent aeronautical authorities of New Zealand of the provisions of non-compulsory modifications affecting aircraft Units of such make and model as have been imported pur- suant to this Arrangement. ARTICLE VII-DIRECT CORRESPONDENCE (a) The competent aeronautical authorities of each Party shall keep the competent aeronautical authorities of the other Party fully and currently informed of all their regulations in force in regard to the airworthiness of aircraft Units and any changes therein that may from time to time be made. (b) In the event that, as a result of difficulties encountered in serv- ice (such as structural failure, etc.) the competent aeronautical au- thorities of New Zealand should suspend or prohibit the further operation of aircraft imported pursuant to the terms of this Arrange- ment, they shall promptly inform the competent aeronautical author- ities of the United States of the nature of the difficulties encountered. (c) The furnishing of the information required by this Arrange- ment and the notification of special requirements pursuant to Article III shall be communicated by the competent aeronautical authorities of one Party directly to the competent aeronautical authorities of the other Party. All questions of procedure to be followed in the application of the provisions of the present Arrangement shall be the subject of direct correspondence, whenever necessary, between the competent aeronautical authorities of the Parties. ARTICLE VIII-TERMINATION The present Arrangement shall be subject to termination by either Party upon six months' notice given in writing to the other Party." I am glad to assure you that my Government accepts the fore- going text as the text which was agreed to by it in the course of the recent negotiations. My Government also accepts your Gov-
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