§29.473 Ground loading conditions and assumptions

(a) For specified landing conditions, a design maximum weight must be used that is not less than the maximum weight. A ro tor lift may be assumed to act through the centre of gravity throughout the landing impact. This lift m ay not exceed two-thirds of the design maximum weight. (b) Unless otherwise prescribed, for each specified landing condition, the rotorcraft must be designed for a limit load factor of not less than the limit inertia load fact or subst antiated under C S 29.725. (c) Triggering or act uating devices for additional or suppl ementary energy absorpt ion may not fai l under l oads est ablished i n t he t ests prescribed in CS 29.725 and 29.727, but the factor of safety prescribed i n C S 29.303 need not be used.