Which system in the TH-73A directly influences flight control response?

• A. Fuel system
• B. Electrical system
• C. Hydraulic system
• D. Communication system

Answer: (C)

The hydraulic system in the TH-73A is crucial for directly influencing flight control response. Helicopters, including the TH-73A, rely on hydraulic systems to assist with the movement of control surfaces and to provide the necessary force to move the flight controls with precision and ease.

When the pilot inputs commands through the flight controls, the hydraulic system amplifies those inputs, allowing for more responsive and effective control of the aircraft's movement. This enhances the pilot’s ability to maneuver the helicopter, especially during critical phases of flight like takeoff, landing, and in complex maneuvers. The hydraulic system ensures that the control response is not only quick but also allows for finer adjustments, which is vital for stability and control.

In contrast, the fuel system primarily manages fuel delivery to the engines, the electrical system powers onboard instruments and systems but does not directly affect flight control, and the communication system facilitates communication but has no role in controlling the aircraft's flight dynamics. Thus, the hydraulic system stands out as the one that has a direct impact on how the aircraft responds to the pilot's commands.