CS 25.113 Take-off distance and take-off run
(a)Take-off distance on a dry runway is the greater of –
(1) The horizontal distance along the take-off path from the start of the take-off to the point at which the aeroplane is 11 m (35 ft) above the take-off surface, determined under CS 25.111 for a dry runway; or
(2)115% of the horizontal distance along the take-off path, with all engines operating, from the start of the take-off to the point at which the aeroplane is 11 m (35 ft) above the take-off surface, as determined by a procedure consistent with CS25.111. (See AMC 25.113(a)(2), (b)(2) and (c)(2).)
(b)Take-off distance on a wet runway is the greater of –
(1)The take-off distance on a dry runway determined in accordance with sub-paragraph (a) of this paragraph; or
(2) The horizontal distance along the take-off path from the start of the take-off to the point at which the aeroplane is 4,6 m (15 ft) above the take-off surface, achieved in a manner consistent with the achievement of V2 before reaching 11 m (35 ft) above the take-off surface, determined under CS 25.111 for a wet runway. (See AMC 113(a)(2), (b)(2) and (c)(2).)
(c)If the take-off distance does not include a clearway, the take-off run is equal to the take-off distance. If the take-off distance includes a clearway –
(1)The take-off run on a dry runway is the greater of –
(i)The horizontal distance along the take-off path from the start of the take- off to a point equidistant between the point at which VLOF is reached and the point at which the aeroplane is 11 m (35 ft) above the take-off surface, as determined under CS 25.111 for a dry runway; or
(ii)115% of the horizontal distance along the take-off path, with all engines operating, from the start of the take-off to a point equidistant between the point at which VLOF is reached and the point at which the aeroplane is 11 m (35 ft) above the take-off surface, determined by a procedure consistent with CS25.111. (See AMC 25.113(a)(2), (b)(2) and (c)(2).)
(2)The take-off run on a wet runway is the greater of –
(i) The horizontal distance along the take-off path from the start of the take- off to the point at which the aeroplane is 4,6 m (15 ft) above the take-off surface, achieved in a manner consistent with the achievement of V2 before reaching 11 m (35 ft) above the take-off surface, determined under CS 25.111 for a wet runway; or
(ii)115% of the horizontal distance along the take-off path, with all engines operating, from the start of the take-off to a point equidistant between the point at which VLOF is reached and the point at which the aeroplane is 11 m (35 ft) above the take-off surface, determined by a procedure consistent with CS 25.111. (See AMC 25.113(a)(2).)