What hazards are associated with the rotor system of the TH-73A?

• A. High temperatures and fuel leaks
• B. Rotor downwash and potential rotor strikes
• C. Excessive engine noise
• D. Electrical malfunctions

Answer: (B)

The rotor system of the TH-73A presents several specific hazards during operations, primarily related to rotor downwash and the potential for rotor strikes. Rotor downwash occurs when the rotor blades generate lift, resulting in turbulent air that is forcefully directed downward. This phenomenon can create strong gusts of wind that affect not only the aircraft's immediate vicinity but can also impact nearby personnel or equipment on the ground.

Additionally, the risk of rotor strikes is a significant safety concern. This can happen if personnel or equipment inadvertently enters the rotor's path during start-up, shut-down, or maneuvers, leading to potentially severe injuries or damage. Proper training and adherence to safety protocols are essential for mitigating these hazards.

In contrast, while factors like high temperatures, fuel leaks, excessive engine noise, and electrical malfunctions do pose hazards within the operational environment, they are not directly tied to the rotor system itself. Therefore, the focus on rotor downwash and potential strikes emphasizes the unique dangers associated with the rotor system of the TH-73A. Understanding these specific risks is crucial for maintaining safety in rotorcraft operations.