Federal Aviation Regulations
Sec. 29.551 — Auxiliary lifting surfaces.
Each auxiliary lifting surface must be designed to withstand—(a) The critical flight loads in §§29.337 through 29.341, and 29.351;
(b) the applicable ground loads in §§29.235, 29.471 through 29.485, 29.493, 29.505, and 29.521; and
(c) Any other critical condition expected in normal operation.
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