What are the indications of a tail rotor malfunction?

A tail rotor malfunction is a critical issue that can significantly impact the control and stability of a helicopter. The correct choice highlights that a sudden yaw and difficulty in maintaining control are prime indications of such a malfunction.

When the tail rotor fails or experiences a malfunction, it may not be able to counter the torque produced by the main rotor effectively. This loss of control can lead to an unexpected and rapid yaw, typically in the direction of the main rotor's rotation. As the yaw increases, maintaining directional control becomes increasingly challenging for the pilot, emphasizing the severity of the situation.

Identifying these signs quickly is crucial for the pilot, as a tail rotor malfunction could lead to a loss of control, necessitating immediate corrective action or emergency procedures to stabilize the aircraft and ensure a safe landing. Understanding these indicators helps pilots and crews maintain readiness for such critical situations.