Developing countries
Article 9
1. In order to avoid undue economic hardship, the competent authorities may exempt marginally compliant aircraft registered in developing countries from noise operating restrictions, while fully respecting the principle of non-discrimination, provided that such aircraft: (a) are granted a noise certification to the standards specified in Chapter 3, Volume 1 of Annex 16 to the Chicago Convention; (b) were operated in the Union during the five-year period preceding the entry into force of this Regulation; (c) were on the register of the developing country concerned in that five-year period; and (d) continue to be operated by a natural or legal person established in that country. 2. Where a Member State grants an exemption provided for in paragraph 1, it shall forthwith inform the competent authorities of the other Member States and the Commission thereof.