Sec. 25.391 - Control surface loads: General.

The control surfaces must be designed for the limit loads resulting from the flight conditions in 25.331, 25.341(a), 25.349 and 25.351 and the ground gust conditions in 25.415, considering the requirements for --

(a) Loads parallel to hinge line, in 25.393;

(b) Pilot effort effects, in 25.397;

(c) Trim tab effects, in 25.407;

(d) Unsymmetrical loads, in 25.427; and

(e) Auxiliary aerodynamic surfaces, in 25.445.

[Doc. No. 5066, 29 FR 18291, Dec. 24, 1964, as amended by Amdt. 25-86, 61 FR 5222, Feb. 9, 1996]