AMC
25.113(a)(2), (b)(2) and (c)(2) Take-off distance and take-off run
ED Decision 2003/2/RM
In establishment of the take-off distance and take-off run, with all engines operating, in accordance with CS 25.113(a), (b) and (c), the flight technique should be such that –
a. A speed of not less than V2 is achieved before reaching a height of 11 m (35 ft) above the take-off surface,
b. It is consistent with the achievement of a smooth transition to a steady initial climb speed of not less than V2 + 19 km/h (10 kt) at a height of 122 m (400 ft) above the take-off surface.