Artikel IV.2

a). This Declaration shall take effect once two thirds of the parties to the Declaration by certain European governments on the Ariane launcher production phase, which entered into force on 21 May 1992 and which was further extended on 10 May 1999, referred to in the preamble, have notified the Director General of the Agency in writing of their acceptance. It shall enter into force for the other parties, referred to in the preamble, on the date on which they notify their acceptance in writing to the Director General of the Agency.
b). This Declaration shall be open for accession by the Member States of the Agency for a period of three months starting on its effective date. During this period any Member State of the Agency shall be free to accede to it. Any subsequent request to accede shall be addressed to the Director General of the Agency and shall require the agreement of all the States that have either notified their acceptance to the Director General of the Agency as specified in a) above, or acceded by the date of such request. This Declaration shall enter into force for the Member States that have acceded to it, 30 days after the date on which they notify the Director General of the Agency of the completion of their national agreement or approval procedures.
c). This Declaration shall apply up to the end of 2006. If need be, its provisions shall remain in force beyond that date in order to allow, where appropriate, for the execution of launch contracts concluded up to the end of 2006. The Participants shall consult together on the conditions for its renewal in good time and not less than one year before the Declaration is due to expire.
d). The Participants agree that they shall meet, at the request of one third of the Participants or of the Director General, for the purpose of reviewing the provisions of this Declaration and their implementation. In the context of these reviews, the Director General may formulate proposals to the Participants in order to amend the content of this Declaration. Amendments to the provisions of this Declaration shall be adopted by a unanimous decision of the Participants.