CS 25.301 Loads

• ED Decision 2016/010/R found in: CS-25 Amdt 27 - Large Aeroplanes (Jan 2023)

CS 25.301 Loads ED Decision 2016/010/R (See AMC 25.301) (a) Strength requirements are specified in terms of limit loads (the maximum loads to be expected in service) and ultimate loads (limit loads multiplied by prescribed factors of safety). Unless otherwise provided, prescribed loads are limit loads. (b) Unless otherwise provided the specified air, ground, and water loads must be placed in equilibrium with inertia forces, considering each item of mass in the aeroplane. These loads must be distributed to conservatively approximate or closely represent actual conditions. (See [AMC No. 1 to CS 25.301(b)](#_DxCrossRefBm1709820902).) Methods used to determine load intensities and distribution must be validated by flight load measurement unless the methods used for determining those loading conditions are shown to be reliable. (See [AMC No. 2 to CS 25.301(b)](#_DxCrossRefBm1709820901).) (c) If deflections under load would significantly change the distribution of external or internal loads, this redistribution must be taken into account. [Amdt 25/1] [Amdt 25/18]