art 9 Smoke emission requirements
(1) This article shall apply to— (a) every subsonic aeroplane powered by one or more than one turbojet engine or turbofan engine where the date of manufacture of any such engine was on or after 1st January 1983; and (b) every supersonic aeroplane powered by one or more than one turbojet engine or turbofan engine where the date of manufacture of any such engine was on or after 18th February 1982. (2) Subject to article 12, an aeroplane to which this article applies shall not land or take-off in the United Kingdom unless every engine of the description contained in paragraph (1) which is fitted to the aeroplane is of a type which has been certified in accordance with article 11 as complying with requirements relating to smoke emission specified in paragraph (3). (3) The requirements referred to in paragraph (2) are— (a) for turbojet engines or turbofan engines fitted to subsonic aeroplanes those specified in Part III, Chapter 2 of Volume II of Annex 16; and (b) for turbojet engines or turbofan engines fitted to supersonic aeroplanes those specified in Part III, Chapter 3 of Volume II of Annex 16.