The #1 Hydraulic system supplies hydraulic fluid through its transfer module to which servos?

• A. The 1st Stage Tail Rotor Servo
• B. The 1st Stage Primary Servos
• C. None of the Above
• D. Both the 1st Stage Primary Servos and the 1st Stage Tail Rotor Servo

Answer: (D)

The system transfers hydraulic power from the #1 hydraulic source to all the primary control servos and the tail rotor servo through its transfer module. This means the first-stage primary servos— which drive the cyclic and collective controls— and the first-stage tail rotor servo both receive pressurized fluid from the #1 system via that transfer module. This shared feed keeps both yaw and pitch/roll control active, and the transfer module allows the same hydraulic source to support multiple servos as needed. That’s why the best answer is that both the first-stage primary servos and the first-stage tail rotor servo receive fluid from the #1 hydraulic system through the transfer module.