DFW Instructors 300/350 Practice Test

The inboard multifunctional spoilers are primarily powered by the left hydraulic system. This hydraulic system is responsible for providing the necessary fluid pressure to operate the inboard spoilers, which play a crucial role in the aircraft’s aerodynamic functions, such as roll control and lift management during various phases of flight, particularly during landing.

The left hydraulic system is designed to handle multiple flight control operations, which is essential for the efficient functioning of the aircraft. Inboard multifunctional spoilers, as part of the control surfaces with high relevance to safety and handling, require a reliable hydraulic source, which is typically managed by the left side in many aircraft systems. This ensures that the aircraft maintains proper control and stability, particularly during critical maneuvers.

Other systems mentioned, such as the right hydraulic system, electrical system, and fuel system, do not directly power the inboard multifunctional spoilers. The right hydraulic system is usually reserved for other flight control surfaces and functions, while the electrical and fuel systems serve different roles within the aircraft’s overall operation.