The Booster hydraulic system supplies hydraulic power to which controls?

• A. Half of the aileron, rudder, and elevator controls
• B. All flight controls
• C. Nosewheel Steering
• D. Wing flaps

Answer: (A)

The Booster hydraulic system is meant to lighten the pilot’s effort by providing hydraulic assist to the primary flight control actuators. It does not power every surface; instead, it feeds only part of the primary controls. In this design, it supplies hydraulic power to half of the aileron, rudder, and elevator controls, with the remaining surfaces driven by other hydraulic systems or by non-boosted mechanisms. Nosewheel steering typically uses a dedicated steering system, and wing flaps are powered by their own hydraulic circuit, not the booster system. So the booster’s role is to provide assist to a subset of the primary controls, specifically half of those surfaces.