§29.505 Ski landing conditions

If certification fo r sk i o peration is req uested, the ro torcraft, with sk is, m ust be designed to withstand the following loading conditions (where P is the m aximum static weight on each ski with the rotorcraft at design maximum weight, and n is the limit l oad fact or det ermined under C S 29.473(b)): (a) Up-load conditions in which: (1) A vertical load of Pn and a horizontal l oad of Pn/ 4 are simultaneously applied at the pedestal bearings; and (2) A vert ical l oad of 1.33 P i s appl ied at the pedestal bearings. (b) A side load condition in which a side load of 0.35 Pn i s applied at the pedestal bearings in a horizontal plane perpendicular to the centreline of the rotorcraft. (c) A torque-load condition in which a torque load of 1.33 P (i n foot -pounds) is applied to the ski about the vertical axis through the centreline of the pedestal bearings.