The Air Navigation (Aircraft and Aircraft Engine Emissions) Order 1986,SI 1986/599,
The Air Navigation (Aeroplane and Aeroplane Engine Emission of Unburned Hydrocarbons) Order 1988,SI 1988/1994,
The Air Navigation (Noise Certification) Order 1990,SI 1990/1514,

Supersonic aeroplanes,,
 1   Subject to article 5(5) every supersonic aeroplane which in the opinion of the CAA —   a   conforms to a type in respect of which the competent authority received an application for a type certificate before 1st January 1975 and did not reject that application and in respect of which a certificate was first issued on or after 26th November 1981; or     b   conforms to a derived version of such a type being an aeroplane in respect of which the competent authority received an application for a change to the type design before 1st January 1975 and did not reject that application and in respect of which the certificate of airworthiness for the individual aeroplane was first issued on or after 26th November 1981.     , The noise made by the aeroplane shall be no greater than that made by the first certificated aeroplane of the type when the noise level of the aeroplane is determined in accordance with Appendix 1 of Volume 1 of Annex 16 in the noise certification reference conditions set out therein.  ,
Microlight aeroplanes,,
 2   Every microlight aeroplane.   , The standards set out in Schedule 3.  ,
Helicopters,,
 3   Subject to article 5(5) every helicopter which does not fall within paragraph (4) and which in the opinion of the CAA —   ,,
 a   conforms to a type in respect of which the competent authority received an application for a type certificate on or after 1st August 1986 and did not reject that application; or     b   conforms to a derived version of a helicopter, being a derived version in respect of which the competent authority received an application to change the type design on or after 1st August 1986 and did not reject that application.   , Part II, Chapter 8 of Volume I of Annex 16.  ,
 4   Subject to article 5(5) every helicopter having a maximum certificated take-off mass not exceeding 2730kg and which in the opinion of the CAA —   ,,
 a   conforms to a type first issued with a type certificate (whether in the United Kingdom or elsewhere) in respect of which the competent authority received an application for a type certificate on or after 1st July 1992 and did not reject that application; or     b   the change of type design was issued, where such a change may increase the helicopter’s overflight noise level, on or after 1st July 1992.   , Part II, Chapter 11 of Volume I of Annex 16.  ,