CS 27.397 Limit
pilot forces and torques
ED Decision 2003/15/RM
(a) Except as provided in sub-paragraph (b) the limit pilot forces are as follows:
(1) For foot controls, 578 N (130 lbs).
(2) For stick controls, 445 N (100 lbs) fore and aft, and 298 N (67 lbs) laterally.
(b) For flap, tab, stabiliser, rotor brake, and landing gear operating controls, the following apply:
(1) Crank, wheel,
and lever controls, (25.4 + R) x 2.919 N, where R = radius in millimetres (
(2) Twist controls, 356 x R Newton-millimetres, where R = radius in millimetres (80 x R inch-pounds where R = radius in inches).