Document ID: chunk:federal_register_of_legislation:F2014C01352:body:0:p10
Version: federal_register_of_legislation:F2014C01352
Segment Type: other
Provision Reference: 
Character Range: 23946–26625

using data set out in the flight manual or the manufacturer's data manual.
Note   The data contained in some manufacturers' data manuals is unfactored and makes no allowance for degraded aircraft performance.
       11.9Paragraphs 11.2, 11.3, 11.5, 11.7 and 11.8 do not apply in the case of an emergency.

12 Obstacle clearance requirements
       12.1For the purposes of subparagraph 4.1 (ba), the take-off obstacle clearance requirements are met if the net flight path of the aeroplane, following failure of the critical engine so that it is recognised at V1 appropriate to a dry runway, would clear by at least 35 feet vertically all obstacles in the take-off area. For the purpose of meeting this requirement, the planned departure procedure may include a change of heading but, in that event, the change of heading must not be initiated before a point where the net flight path clears all obstacles by at least 50 feet and, for the duration of the turn, the net flight path must clear by at least 50 feet vertically all obstacles in the take-off area. The planned angle of bank must not exceed 15°, except that in an approved RNP operation the planned angle of bank must not exceed 25° subject to the aeroplane's flight manual containing data that supports the planned angle of bank. The data must provide an increased take-off safety speed V2 when planning an angle of bank greater than 15°. It must also contain data to allow construction of the net flight path when using an increased take-off safety speed V2 and when planning to use an angle of bank greater than 15°.
    Note   If an engine failure is recognised at or after V1 (wet) during take-off from a wet or contaminated runway, the net flight path may clear obstacles by less than 35 feet, or, during a turn, by less than 50 feet.
       12.1AIn paragraph 12.1, take-off area means the area calculated by the operator in accordance with paragraph 12.1.1 or subsection 12A, at the operator's discretion.
       12.1BHowever, the operator is not required to calculate the area beyond the point on the planned flight path at which the net flight path complies with paragraph 12.4.
       12.1.1Unless determined in accordance with subsection 12A, the take-off area is:
(a) in the case of V.M.C. operations by aeroplanes below 22 700 kg maximum take-off weight — the area on either side of the planned flight path within a lateral distance of 150 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. Despite this requirement, the area more than 1 000 feet either side of the planned flight path need not be considered