How is the landing gear retraction and extension controlled and operated?

• A. Electrically controlled and hydraulically-operated
• B. Pneumatically controlled
• C. Manually actuated
• D. Motor-driven only

Answer: (A)

The system relies on electric control to operate hydraulics. When you select gear up or down, an electrical signal powers a hydraulic pump and opens the appropriate valves, directing high-pressure fluid to the gear actuators. The hydraulic pressure moves the gear legs and doors, with locks and interlocks ensuring the gear stays securely in the chosen position once extended or retracted. This combination—electrical control to command hydraulics—provides the necessary force, reliability, and fail-safe behavior for routine gear operation. Pneumatic systems or manual cranking wouldn’t deliver the same level of force and automation, and a purely motor-driven arrangement wouldn’t have the robust hydraulic path that actual gear actuation requires.