14 CFR · Part 25
14 CFR § 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) and (b), 25.349, and 25.351, 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.
Regulations Referenced
Reflects the eCFR edition current as of September 29, 2026. Retrieved from ecfr.gov on October 16, 2026.
Primary Source