【正文】 ies may amend this Agreement, having regard, inter alia, to the experience gained in its implementation. Such an amendment, once the Signatories have concurred in accordance with the procedures established by the Committee, shall not e into force for any Signatory until it has been accepted by such Signatory. Withdrawal Any Signatory may withdraw from this Agreement. The withdrawal shall take effect upon the expiration of twelve months from the day on which written notice of withdrawal is received by the DirectorGeneral to the CONTRACTING PARTIES to the GATT. Any Signatory may upon such notification request an immediate meeting of the Committee. NonApplication of this Agreement Between Particular Signatories This Agreement shall not apply as between any two Signatories if either of the Signatories, at the time either accepts or accedes to this Agreement, does not consent to such application. Annex The Annex to this Agreement forms an integral part thereof. Secretariat This Agreement shall be serviced by the GATT secretariat. Deposit This Agreement shall be deposited with the DirectorGeneral to the CONTRACTING PARTIES to the GATT who shall promptly furnish to each Signatory and each contracting party to the GATT a certified copy thereof and of each amendment thereto pursuant to Article and a notification of each acceptance thereof or accession thereto pursuant to Article , or each withdrawal therefrom pursuant to Article . Registration This Agreement shall be registered in accordance with the provisions of Article 102 of the Charter of the United Nations. Done at Geneva this twelfth day of April nineteen hundred and seventynine in a single copy, in the English and French languages, each text being authentic, except as otherwise specified with respect to the various lists in the 25 March 1987, the Committee agreed that the Spanish text of the Agreement shall also be considered authentic. ANNEXas amended by the Protocol (1986) amending the access to the Agreement on Trade in Civil Aircraft. PRODUCT COVERAGE1. The product coverage is defined in Article 1 of the Agreement on Trade in Civil Aircraft.2. Signatories agree that products covered by the descriptions listed below1 and properly classified for customs purposes under the Customs Cooperation Council Nomenclature (Revised) headings of the Harmonized System codes shown alongside shall be accorded dutyfree or dutyexempt treatment, if such products are for use in civil aircraft or ground flying trainers* and for incorporation therein, in the course of their manufacture, repair, maintenance, rebuilding, modification or conversion. These products shall not include: an inplete or unfinished product, unless it has the essential character of a plete or finished part, ponent, subassembly or item of equipment of a civil aircraft or ground flying trainer*, (. an article which has a civil aircraft manufacturer39。s number), materials in any form (. sheets, plates, profile shapes, strips, bars, pipes, tubes or other shapes) unless they have been cut to size or shape and/or shaped for incorporation in civil aircraft or a ground flying trainer* (. an article which has a civil aircraft manufacturer39。s part number), raw materials and consumable goods.4. For the purpose of this Annex, _Ex_ has been included to indicate that the product description referred to does not exhaust the entire range of products within the Customs Cooperation Council Nomenclature (Revised) headings or the Harmonized System codes listed 1The list is not reproduced. *For the purposes of Article of this Agreement _ground flight simulators_ are to be regarded as ground flying trainers as provided for under of the Harmonized System.