ED Decision 2015/008/R
(a) The take-off speeds prescribed by CS 25.107, the accelerate-stop distance prescribed by CS 25.109, the take-off path prescribed by CS 25.111, the take-off distance and take-off run prescribed by CS 25.113, and the net take-off flight path prescribed by CS 25.115, must be determined in the selected configuration for take-off at each weight, altitude, and ambient temperature within the operational limits selected by the applicant -
(1) In
non-icing conditions; and
(2) In
icing conditions, if in the configuration used to show compliance with CS 25.121(b), and with the most critical
of the “Take-off Ice” accretion(s) defined in Appendices C and O, as
applicable, in accordance with CS 25.21(g):
(i) The
stall speed at maximum take-off weight exceeds that in non-icing conditions by
more than the greater of 5.6 km/h (3 knots) CAS or 3% of VSR; or
(ii) The
degradation of the gradient of climb determined in accordance with CS 25.121(b) is
greater than one-half of the applicable actual-to-net take-off flight path
gradient reduction defined in CS 25.115(b).
(b) No take-off made to determine the data required by this paragraph may require exceptional piloting skill or alertness.
(c) The take-off data must be based on:
(1) Smooth, dry and wet, hard-surfaced runways; and
(2) At the option of the applicant, grooved or porous friction course wet, hardsurfaced runways.
(d) The take-off data must include, within the established operational limits of the aeroplane, the following operational correction factors:
(1) Not more than 50% of nominal wind components along the take-off path opposite to the direction of take-off, and not less than 150% of nominal wind components along the take-off path in the direction of take-off.
(2) Effective runway gradients.
[Amdt 25/3]
[Amdt 25/16]
EASA aviation regulations for large aeroplanes mandate specific take-off performance data calculations. These calculations consider weight, altitude, temperature, runway conditions (dry, wet, grooved), and wind. Icing conditions must be accounted for if stall speed or climb gradient is significantly affected. Take-off procedures must not demand exceptional piloting skills.
* Summary by Aviation.Bot - Always consult the original document for the most accurate information.
Loading collections...