# The Air Navigation (Noise Certification) Order 1990, Article 4: Application of Order


This Order shall apply to—
(a) every propeller driven aeroplane having a maximum total weight authorised of 9,000kg or less;
(b) every aeroplane which is capable of sustaining level flight at a speed in excess of Flight Mach 1.0, being an aeroplane in respect of which applicable standards are specified in article 6(9) of this Order;
(c) every microlight aeroplane;
(d) every other subsonic aeroplane which in accordance with its certificate of airworthiness has a take-off distance required, at maximum total weight authorised on a hard level runway in still air in an International Standard Atmosphere at sea level, of more than 610 metres;
(e) every helicopter, being a helicopter in respect of which applicable standards are specified in article 6(10) of this Order.

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Source: https://www.legislation.gov.uk/uksi/1990/1514/article/4 (the official version)
Page: https://openlegislation.uk/air-navigation-noise-certification-order-1990/article-4
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.