Is the rotor brake permissible to be used when both engines are operating?

Is the rotor brake permissible to be used when both engines are operating?

• A. No
• B. Yes
• C. Under emergency conditions
• D. Only with authorization

Answer: (B)

The rotor brake is a controlled means to arrest rotor rotation without relying on engine torque, so it’s designed to be used even when both engines are operating. This lets you quickly secure the rotor on deck or during maintenance without shutting down the engines, following proper procedure and limits. Engage smoothly with the rotor RPM within the specified range and monitor the drive train to avoid excessive loads. It isn’t limited to emergencies or to scenarios requiring special authorization, so using it with both engines running is considered permissible as part of normal operations.

The rotor brake is a controlled means to arrest rotor rotation without relying on engine torque, so it’s designed to be used even when both engines are operating. This lets you quickly secure the rotor on deck or during maintenance without shutting down the engines, following proper procedure and limits. Engage smoothly with the rotor RPM within the specified range and monitor the drive train to avoid excessive loads. It isn’t limited to emergencies or to scenarios requiring special authorization, so using it with both engines running is considered permissible as part of normal operations.