What action should be taken if there are moderate vibrations?

What action should be taken if there are moderate vibrations?

• A. LAND AS SOON AS POSSIBLE
• B. LAND/DITCH IMMEDIATELY
• C. HOLD ALTITUDE
• D. CONTINUE FLIGHT

Answer: (A)

Moderate vibrations signal a developing abnormal condition in the rotor or driveline that could worsen if you continue flight. The safest course is to land as soon as practical at the nearest suitable site so you can shut down safely, inspect the rotor system and drivetrain, and determine whether it’s safe to continue. Keeping altitude or continuing flight would not address the potential issue and could allow it to deteriorate, while landing immediately is reserved for true emergencies. After landing, perform the appropriate inspections and procedures to confirm the condition before deciding on next steps.

Moderate vibrations signal a developing abnormal condition in the rotor or driveline that could worsen if you continue flight. The safest course is to land as soon as practical at the nearest suitable site so you can shut down safely, inspect the rotor system and drivetrain, and determine whether it’s safe to continue. Keeping altitude or continuing flight would not address the potential issue and could allow it to deteriorate, while landing immediately is reserved for true emergencies. After landing, perform the appropriate inspections and procedures to confirm the condition before deciding on next steps.