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