(SAL) 25.3 Steep Approach Landing Distance

• ED Decision 2013/010/R found in: CS-25 Amdt 27 - Large Aeroplanes (Jan 2023)

(SAL) 25.3 Steep Approach Landing Distance ED Decision 2013/010/R (Applicable only if a reduced landing distance is sought, or if the landing procedure (speed, configuration, etc.) differs significantly from normal operation, or if the screen height is greater than 50 ft.) (a) The steep approach landing distance is the horizontal distance necessary to land and to come to a complete stop from the landing screen height and must be determined (for standard temperatures, at each weight, altitude and wind within the operational limits established by the applicant for the aeroplane) as follows: (1) The aeroplane must be in the all-engines-operating or one-engine-inoperative steep approach landing configuration, as applicable. (2) A stabilised approach, with a calibrated airspeed of VREF(SAL) or VREF(SAL)-1 as appropriate, and at the selected approach angle must be maintained down to the screen height. (3) Changes in configuration, power or thrust, and speed must be made in accordance with the established procedures for service operation (see [AMC 25.125(b)(3)](#_DxCrossRefBm1709820794)). (4) The landing must be made without excessive vertical acceleration, tendency to bounce, nose over or ground loop and with a vertical touchdown velocity not greater than 6 ft/sec. (5) The landings may not require exceptional piloting skill or alertness. (b) The landing distance must be determined on a level, smooth, dry, hard-surfaced runway (see [AMC 25.125(c)](#_DxCrossRefBm1709820793)). In addition, (1) The pressures on the wheel braking systems may not exceed those specified by the brake manufacturer; (2) The brakes may not be used so as to cause excessive wear of brakes or tyres (see [AMC 25.125(c)(2)](#_DxCrossRefBm1709820792)); and (3) Means other than wheel brakes may be used if that means (i) Is safe and reliable; (ii) Is used so that consistent results can be expected in service; and (iii) Is such that exceptional skill is not required to control the aeroplane. (c) Reserved. (d) Reserved. (e) The landing distance data must include correction factors for not more than 50 % of the nominal wind components along the landing path opposite to the direction of landing, and not less than 150 % of the nominal wind components along the landing path in the direction of landing. (f) If any device is used that depends on the operation of any engine, and if the landing distance would be noticeably increased when a landing is made with that engine assumed to fail during the final stages of an all-engines-operating steep approach, the steep approach landing distance must be determined with that engine inoperative unless the use of compensating means will result in a landing distance not more than that with each engine operating. [Amdt 25/13]