CS 27.411 Ground
clearance: tail rotor guard
ED Decision 2003/15/RM
(a) It must be impossible for the tail rotor to contact the landing surface during a normal landing.
(b) If a tail rotor guard is required to show compliance with sub-paragraph (a):
(1) Suitable design loads must be established for the guard; and
(2) The guard and its supporting structure must be designed to withstand those loads.
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