CS 27.397 Limit pilot forces and torques

• ED Decision 2003/15/RM found in: CS-27 Amdt 10 - Small Rotorcraft (Feb 2023)

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 (  x 50 lbs, where R = radius in inches), but not less than 222 N (50 lbs) nor more than 445 N (100 lbs) for hand-operated controls or 578 N (130 lbs) for foot-operated controls, applied at any angle within 20° of the plane of motion of the control. (2) Twist controls, 356 x R Newton-millimetres, where R = radius in millimetres (80 x R inch-pounds where R = radius in inches). 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 (  x 50 lbs, where R = radius in inches), but not less than 222 N (50 lbs) nor more than 445 N (100 lbs) for hand-operated controls or 578 N (130 lbs) for foot-operated controls, applied at any angle within 20° of the plane of motion of the control. (2) Twist controls, 356 x R Newton-millimetres, where R = radius in millimetres (80 x R inch-pounds where R = radius in inches).