CS 25.1592 Performance information for assessing the landing distance

• ED Decision 2021/015/R found in: CS-25 Amdt 27 - Large Aeroplanes (Jan 2023)

CS 25.1592 Performance information for assessing the landing distance ED Decision 2021/015/R (See [AMC 25.1592](#_DxCrossRefBm1709821832)) (a) At the discretion of the applicant, supplementary landing performance information may be furnished for aeroplanes landing on slippery wet runways and on runways contaminated with standing water, slush, snow, or ice to be used by operators to support the dispatch of a flight. If information on any one or more of the above surface conditions is not supplied, the AFM must contain a statement that prohibits landing on surfaces that do not meet the minimum friction criteria, or contaminated surface(s) for which information is not supplied. Additional information covering operation on surface conditions other than the above may be provided at the discretion of the applicant. (b) Landing-distance information must be furnished for assessing the landing performance at the time of arrival on dry, wet, slippery wet runways, and runways contaminated with standing water, slush, snow, or ice. (c) Performance information that is furnished by the applicant must be contained in the AFM. The information may be established through calculation or testing. (d) The data to be used for assessing the landing performance at the time of arrival consists of the horizontal distance from the point at which the main gear of the aeroplane is 15 m (50 ft) above the landing surface to the point where the aeroplane comes to a complete stop. This data must allow to compute the landing distance based on the following elements: — runway condition (see [AMC 25.1592](#_DxCrossRefBm1709821832)), — wind, — ambient air temperature, — average runway slope, — pressure altitude, — icing conditions, — planned final-approach speed, — aeroplane mass and configuration, and — deceleration devices. The applicant may optionally provide information on runway surface conditions and braking actions. [Amdt No: 25/27]