Document ID: chunk:federal_register_of_legislation:F2014C01352:body:0:p11
Version: federal_register_of_legislation:F2014C01352
Segment Type: other
Provision Reference: 
Character Range: 26382–28992

is distance measured horizontally along the planned flight path and commencing at the end of the take-off distance available. Despite this requirement, the area more than 1 000 feet either side of the planned flight path need not be considered unless the planned flight path involves a change of heading in excess of 15o. In this latter event the lateral area will continue to expand throughout the turn and the limiting lateral distance shall become the greater of 1 000 feet or the distance represented by 150 feet plus 0.125D where D is measured to the point of completion of the turn;
(b) in the case of V.M.C. operations by aeroplanes at or above 22 700 kg maximum take-off weight and all I.M.C. operations — the area on either side of the planned flight path within a lateral distance of 250 feet plus 0.125D where D is distance measured horizontally along the planned flight path and commencing at the end of the take-off distance available. If the aircraft is equipped and approved to conduct RF legs and any turns, and the departure procedures are constructed using ARINC 424 RF path terminators, then the lateral expansion of the take-off area may be discontinued when the perimeter of the take-off area reaches:
 (i) RNP set equal to, or greater than, 0.5 — 900 metres either side of the defined flight path; or
 (ii) RNP set equal to, or less than, 0.2 — 370 metres either side of the defined flight path; or
 (iii) RNP set to more than 0.2 but less than 0.5 — a distance either side of the defined flight path derived by linear interpolation between 370 metres and 900 metres according to the RNP.
       12.2In the application of paragraph 12.1, it is to be assumed that the point on the net flight path where a horizontal flight segment commences is the same horizontal distance from the end of the runway as the point where the gross flight path intersects the height selected for the level flight acceleration manoeuvre.
    Note   This paragraph requires the height selected by the operator for the level flight acceleration manoeuvre to be more than 35 feet higher than the height of the highest obstacle in the take-off area.
       12.3.1For paragraph 12.1, an obstacle-clear take-off gradient, for a runway and a direction, published in Aeronautical Information Publications, may be used for the part of the take-off area commencing at the end of the take-off distance available and extending for the length of the surveyed area on which the gradient is based, despite the fact that the rate of divergence of the surveyed area may be less than 0.125D and that the length of the inner edge