Regulation 7 Weight and performance: general provisions

The assessment of the ability of an aeroplane to comply with the requirements of Schedule 2 and of a helicopter to comply with the requirements of Schedule 3 (relating in either case to weight, performance and flights in specified meteorological conditions or at night) shall be based on the specified information as to its performance.

In assessing the ability of an aeroplane to comply with sub-paragraphs (8), (12), (16) and (18) of paragraph 1 of Schedule 2, with sub-paragraphs (8) and (11) of paragraph 6 of Schedule 2 and with sub-paragraph (19) of paragraph 7 of Schedule 2, account may be taken of any reduction of the weight of the aeroplane which may be achieved after the failure of a power unit by such jettisoning of fuel as is feasible and prudent in the circumstances of the flight and in accordance with the flight manual included in the certificate of airworthiness relating to the aircraft.

In this Part and in Schedules 2 and 3—

• “specified” in relation to an aircraft means specified in, or ascertainable by reference to:

  1. (a)

     the certificate of airworthiness in force under the Order in respect of that aircraft; or

  2. (b)

     the flight manual or performance schedule included in that certificate, or other document, whatever its title, incorporated by reference in that certificate; or

  3. (c)

     if there is no flight manual or performance schedule or other such document so incorporated in that certificate, the flight manual for that aircraft;

  • “the accelerate-stop distance” means the distance from the point on the surface of the aerodrome at which the aeroplane can commence its take-off run to the nearest point in the direction of take-off at which the aeroplane cannot roll over the surface of the aerodrome and be brought to rest in an emergency without the risk of accident;

  • “the landing distance available” means the distance from the point on the surface of the aerodrome above which the aeroplane can commence its landing, having regard to the obstructions in its approach path, to the nearest point in the direction of landing at which the surface of the aerodrome is incapable of bearing the weight of the aeroplane under normal operating conditions or at which there is an obstacle capable of affecting the safety of the aeroplane;

  • “the take-off distance available” means either the distance from the point on the surface of the aerodrome at which the aeroplane can commence its take-off run to the nearest obstacle in the direction of take-off projecting above the surface of the aerodrome and capable of affecting the safety of the aeroplane, or one and one half times the take-off run available, whichever is the less;

  • “the take-off run available” means the distance from the point on the surface of the aerodrome at which the aeroplane can commence its take-off run to the nearest point in the direction of take-off at which the surface of the aerodrome is incapable of bearing the weight of the aeroplane under normal operating conditions.

For the purposes of Schedules 2 and 3—