Dual control system.
CFR · 2024-01-01 · US · Title 14
Each dual primary flight control system must be able to withstand the loads that result when pilot forces not less than 0.75 times those obtained under § 29.395 are applied— (a) In opposition; and (b) In the same direction.
official document · source cfr-2024 · id 14:§ 29.399