What does the number 1 hydraulic pump pressurize?

What does the number 1 hydraulic pump pressurize?

• A. 1st stage primary servos and 1st stage tail rotary servo
• B. 2nd stage primary servos and pilot assist module
• C. 3rd stage servos
• D. APU

Answer: (A)

The first hydraulic pump is dedicated to powering the initial boost for the primary flight controls. It pressurizes the first-stage primary servos, which handle the main control inputs that move the cyclic and collective, and it also feeds the first-stage tail rotor servo that provides yaw control. These first-stage servos are the primary actuators that translate pilot inputs into actual rotor movement. The other stages and components are fed by the other hydraulic pumps: second-stage primaries and the pilot assist module get pressure from the second pump, third-stage servos from the third pump, and the APU isn’t driven by this pump’s output.

The first hydraulic pump is dedicated to powering the initial boost for the primary flight controls. It pressurizes the first-stage primary servos, which handle the main control inputs that move the cyclic and collective, and it also feeds the first-stage tail rotor servo that provides yaw control. These first-stage servos are the primary actuators that translate pilot inputs into actual rotor movement.

The other stages and components are fed by the other hydraulic pumps: second-stage primaries and the pilot assist module get pressure from the second pump, third-stage servos from the third pump, and the APU isn’t driven by this pump’s output.