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(6) The weight of the aeroplane at the intended time of landing calculated by deducting the estimated weight of the fuel expected to be used on the flight from its weight at the commence- ment of the take-off run will not exceed any of the following weights-
(4) the weights if any specified in the performance schedule or fight manual relating to the aeroplane issued or rendered valid by the Director, as the maximum landing weights appropriate either to the heights above mean sea level of, and the air temperatures forecast for the estimated times of landing at, the aerodrome at which it is intended to land and any alternate aerodrome, or to the brights above mean sea level of such aerodromes;
th) the weight at which the aeroplane is capable of landing safely in still air conditions in not more than zu per cent, or, if a visual approach and landing will be possible in the meteorological conditions forecast for the estimated time of landing, in not more than 80 per cent, of the landing distance available at the aerodrome at which it is intended to land or at any alternate aerodrome;
(c) the weight at which the aeroplane is capable of landing safely in the wind conditions forecast for the estimated time of landing, regard being bad to not more than so per cent. of the forecast wind component opposite to the direction of landing, or to not less than 150 per cent, of the forecast wind component in the direction of landing, in not more than 70 per cent.. or if a visual approach and landing will be possible in the meteorological conditions forecast for the estimated time of landing is not more than So per cent., of the landing distance available at the aero- drome at which it is intended to land or at any alternate aerodrome.
34. (1) In assessing the ability of the aeroplane to satisfy conditions (2)(b) and (2)(c) of regulation 33 regard shall be had In the effect on its performance of the following factors--
(a) the height above mean sea level of the aerodrome; (b) the amount by which either the air temperature at the time of take-off or a temperature approved in respect of the aerodrome by the Director exceeds by more than 15"
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centigrade the temperature of the international standard almosphere, appropriate to the height above mean sea level of the aerodrome, from time to time specified in 1 publication issued by the Director;
(c) the average slope of the surface of the aerodrome in the direction of take-off over the emergency distance avail- able:
(d) not more than 50 per cent. of the reported wind com- ponent opposite to the direction of take-off or not less than 150 per cent, of the reparted wind component in the direction of take-off.
(2) In assessing the ability of the aeroplane to satisfy conditions (6)(M) und (6)(c) of regulation 33 regard shall be had to the effect on performance of the following factors-
(a) the height above mean sea level of the aerodrome; (b) the average slope of the surface of the aerodrome in the direction of landing over the landing distance available,
35. The assessment of the ability of an aeroplane to comply with regulation 33 shall be based on the information as to its weight and performance contained in the performance schedule or Bight manual relating to the aeroplane issued or rendered valid by the Director; provided that if no performance schedule and no light manual relating to the aeroplane has been issued or rendered valid by the Director, or if the performance schedule or flight manual issued or rendered valid by the Director does not contain the relevant information, the assessment shall be based on the best information available to the person in command of the aeroplane.
Requirements as to the eight and Performance of Public Transport Aeroplanes classified as Aeroplanes of Performance Group 2 in their Certificates of Airworthiness.
36. With reference to Article 17 of the Order a public transport aeroplane classified in the certificate of airworthiness relating to the aeroplane issued or rendered valid by the Director as an aeroplane of performance group A shall not fly or attempt to fly unless the weight of the acroplane at the commencement of the take-off run is such that the following conditions are satisfied-