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Title 14: Aeronautics and Space
CHAPTER I: FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION
SUBCHAPTER C: AIRCRAFT
PART 27: AIRWORTHINESS STANDARDS: NORMAL CATEGORY ROTORCRAFT
Subpart C: Strength Requirements
: Ground Loads
27.493 - Braked roll conditions.
Under braked roll conditions with the shock absorbers in their static positions?
(a) The limit vertical load must be based on a load factor of at least?
(1) 1.33, for the attitude specified in ? 27.479(a)(1); and
(2) 1.0 for the attitude specified in ? 27.479(a)(2); and
(b) The structure must be designed to withstand at the ground contact point of each wheel with brakes, a drag load at least the lesser of?
(1) The vertical load multiplied by a coefficient of friction of 0.8; and
(2) The maximum value based on limiting brake torque.
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