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.