Document ID: chunk:federal_register_of_legislation:F2014C01352:body:0:p6
Version: federal_register_of_legislation:F2014C01352
Segment Type: other
Provision Reference: 
Character Range: 13618–16396

and
(b) the take-off weight must not exceed that permitted for take-off from the runway when wet under the same conditions of ambient temperature and wind component along the runway; and
(c) either:
 (i) if the flight manual or the operations manual allows the take-off distance available to include clearway — the take-off run required must not exceed the take-off run available; or
 (ii) in any other case — the take-off distance available must not include clearway.
       6.4For subparagraph 4.1 (a), paragraph 6.2.2 and paragraph 6.3.1, an aeroplane engaged in private operations must be operated so that compliance with the runway length requirements is demonstrated using data set out in:
(a) the flight manual; or
(b) the manufacturer's data manual; or
(c) the approved foreign flight manual.
    Note   The data contained in some manufacturers' data manuals is unfactored and makes no allowance for degraded aircraft performance.
       6.5Nothing in paragraph 6.4 affects subsections 7 and 12.

7 Take-off climb performance
       7.1In the take-off configuration assuming failure of the critical engine so that it is recognised at V1, an aeroplane must be able to climb without ground effect at the speed established as the speed at which the aeroplane becomes airborne and in this configuration, without landing gear retraction, achieve a gross gradient of climb which is positive for two-engined aeroplanes, 0.3% for three-engined aeroplanes and 0.5% for four-engined aeroplanes.
       7.2In the take-off configuration that exists with the critical engine inoperative and the landing gear fully retracted, the aeroplane at speed V2 must be able to achieve a gross gradient of climb of at least:
(a) if the aeroplane is a commuter type aeroplane — 2%; and
(b) if the aeroplane is not a commuter type aeroplane:
 (i) if it has 2 engines — 2.4%; and
 (ii) if it has 3 engines — 2.7%; and
 (iii) if it has 4 engines — 3%.
       7.3.1An aeroplane may be accelerated in level flight from V2 speed to final take-off climb speed at a height above the take-off surface that is the greater of:
(a) 400 feet; or
(b) the height necessary to achieve obstacle clearance in accordance  with paragraphs 12.1 and 12.2.
       7.3.2During any such level flight acceleration manoeuvre, an aeroplane with the critical engine inoperative must have an available gross gradient of climb of at least:
(a) for a twin-engined aeroplane — 1.2%; or
(b) for a 3-engined aeroplane — 1.4%; or
(c) for a 4-engined aeroplane — 1.5%.
       7.4.1In the en-route configuration existing at the end of the level flight acceleration manoeuvre, an aeroplane must be able to achieve a gross gradient of climb of at least:
(a) for a twin-engined aeroplane — 1.2%; or
(b) for a 3-engined aeroplane — 1.4%;