Which component is powered by hydraulic System B?

• A. The yaw damper
• B. Power transfer unit (PTU)
• C. Autoslats
• D. Trailing edge flaps

Answer: (C)

In hydraulic systems, each component relies on the system’s pressure and fluid to operate effectively. The correct answer identifies the component that is specifically powered by Hydraulic System B.

The autoslats, which are devices that extend and help prevent stalling during wing operation, often receive their operation power from a dedicated hydraulic system in modern aircraft. System B is typically designed to manage various control surfaces and components, which can include the autoslats due to the nature of their operation and necessity for precise maneuverability.

The yaw damper serves to stabilize the aircraft's lateral control and may be powered by a different hydraulic system. The power transfer unit (PTU) is usually a system designed to transfer hydraulic fluid between systems or manage power-related operations, which may not be directly servicing the autoslats. Trailing edge flaps, like the autoslats, are crucial for flight performance but may be managed separately, often by another hydraulic system.

In summary, the reason autoslats are the correct answer lies in their dependency on specific hydraulic systems for function, aligning with the role of Hydraulic System B in controlling components that are essential for the aircraft's aerodynamic and flight characteristics.