# The Air Navigation (Noise Certification) Order 1987, Paragraph 2: Noise standards required for issue of a noise certificate to aeroplanes specified in articles 6(2), (6) and (9)


The noise levels required by paragraph 3 of this Part of this Schedule shall be measured at the following points—
(a) on take-off, at a point on a line parallel to and 650 metres from the centre-line or extended centre-line of the runway where it appears to the CAA that the noise during take-off is greatest;
(b) on take-off, at a point on the extended centre-line of the runway, 6,500 metres from the start of the take-off roll; and
(c) on the approach to landing at a point on the extended centre-line of the runway, 120 metres vertically below the 3° descent path.

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Source: https://www.legislation.gov.uk/uksi/1987/2212/schedule/1/paragraph/2 (the official version)
Page: https://openlegislation.uk/air-navigation-noise-certification-order-1987/schedule-1/paragraph-2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.