# The Air Navigation (Environmental Standards For Non-Part 21 Aircraft) Order 2008, Paragraph 2


For microlight aeroplanes first registered in the United Kingdom or elsewhere on or after 1st April 1986 and before 5 April 2002 the maximum noise levels, when determined in accordance with the noise evaluation method specified in Section 2, must not exceed the following—
(a) single seat microlight aeroplanes – 76LAE (dB(A));
(b) two seat microlight aeroplanes – 80LAE (dB(A)).

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Source: https://www.legislation.gov.uk/uksi/2008/3133/schedule/part/1/paragraph/2 (the official version)
Page: https://openlegislation.uk/air-navigation-environmental-standards-for-non-part-21-aircraft-order-2008/schedule/part-1/paragraph-2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.