第7條
Subject to condition (8) of this Regulation, the distance required by the aeroplane to land from a height of 50 feet otherwise than in accordance with specified data for short field landing does not, at the aerodrome at which it is intended to land and at any alternate aerodrome, exceed 70 per cent of the landing distance available on the most suitable runway for a landing in still air conditions, and on the runway that may be required for landing because of the forecast wind conditions; and for the purposes of this condition the distance required to land from a height of 50 feet shall be taken to be that specified as being appropriate to— (a) the landing weight; (b) the altitude at the aerodrome; (c) the temperature in the specified international standard atmosphere appropriate to the altitude at the aerodrome; (d) (i) a level surface in the case of runways usable in both directions; (ii) the average slope of the runway in the case of runways usable in only one direction; and (e) (i) still air conditions in the case of the most suitable runway for landing in still air conditions; (ii) not more than 50 per cent of the forecast wind component opposite to the direction of landing or not less than 150 per cent of the forecast wind component in the direction of landing in the case of the runway that may be required for landing because of the forecast wind conditions.