What is the primary purpose of the hydraulic system in the MH-60S?

The primary purpose of the hydraulic system in the MH-60S is to operate flight control surfaces, landing gear, and utility functions. The hydraulic system provides the necessary power to actuate various components critical for the aircraft's operation and control. Flight control surfaces, such as ailerons, elevators, and rudders, rely on hydraulic pressure for movement, allowing the pilot to maneuver the aircraft effectively. Additionally, the hydraulic system is responsible for deploying and retracting landing gear, ensuring safe takeoffs and landings. It also supports utility functions, which may include operating weapons systems and cargo handling equipment. This versatility makes the hydraulic system vital for both flight operations and mission capabilities of the MH-60S.

In contrast, the other options address systems that do not rely directly on hydraulic power for their primary functions. The avionics system is primarily powered electronically, the cabin pressure regulation typically involves environmental control systems, and navigation systems depend on electronic sensors and displays rather than hydraulic mechanisms.