(a) It must be shown by operation tests that, when the controls are operated from the pilot compartment with the system loaded as prescribed in paragraph (b) of this section, the system is free from--
(1) Jamming;
(2) Excessive friction; and
(3) Excessive deflection.
(b) The prescribed test loads are--
(1) For the entire system, loads corresponding to the limit airloads on the appropriate surface, or the limit pilot forces in Sec. 23.397(b), whichever are less; and
(2) For secondary controls, loads not less than those corresponding to the maximum pilot effort established under Sec. 23.405. [Doc. No. 4080, 29 FR 17955, Dec. 18, 1964, as amended by Amdt. 23-7, 34 FR 13091, Aug. 13, 1969]