How many stages of the primary servos can be turned off using SERVO OFF?

• A. Two
• B. One
• C. Three
• D. Four

Answer: (A)

SERVO OFF removes power to a pair of the primary flight-control servo stages, leaving the other pair active. The UH-60S control system is designed with two groups of primary servos that work together to move the controls, so turning OFF the switch effectively shuts down one group while the remaining group still provides control. This creates a degraded but controllable flight condition rather than a complete loss of all primary servos. It isn’t intended to disable just a single actuator or to shut down all primary servos, which is why the correct answer points to two stages being able to be turned off.