Are all multifunctional spoilers operative after a right hydraulic system failure?

In this context, the correct answer indicates that after a right hydraulic system failure, the outboard flight spoilers are not operative. This is aligned with the design and functionality of aircraft systems, where certain control surfaces depend on hydraulic systems for actuation. The hydraulic systems provide the necessary pressure and control to move these surfaces effectively.

When a right hydraulic system fails, the aircraft's ability to operate outboard flight spoilers is compromised due to their reliance on that specific hydraulic source. This failure limits the control the pilot has over roll and might also impact the lift-to-drag ratio of the wings, thus affecting overall aerodynamic performance.

The other responses suggest varying degrees of operational capability for the spoilers. Some options imply that all or some spoilers would still work after such a failure, which misrepresents the reliance of specific flight control surfaces on dedicated hydraulic systems. Understanding the aircraft's hydraulic system architecture is essential for grasping why the outboard flight spoilers cannot be used in this scenario.