How is the rotor brake lever connected to the hydraulic pump in the TH-73A?

• A. Hydraulic line
• B. Electrical wiring
• C. Cable
• D. Stream line

Answer: (C)

The rotor brake lever in the TH-73A is mechanically connected to the hydraulic system via a cable. This design allows the pilot to engage or disengage the rotor brake effectively by pulling or pushing the lever, which in turn operates the brake system. The cable connection translates the mechanical movement of the lever directly into action for the hydraulic brake, ensuring reliable performance and control.

Using a cable system provides certain advantages, such as reducing the complexity and potential for hydraulic fluid leaks compared to a direct hydraulic line connection. This configuration enhances the overall safety and operation of the helicopter's braking system.