What is the viscous damper limit for needing servicing?

The correct answer encompasses both the need for servicing and replacement based on the measurements of the viscous damper. When evaluating the performance of the viscous damper, it is critical to identify specific thresholds for action.

Having a measurement between 1-2 inches indicates that the damper is functioning outside its optimal range and requires servicing to ensure the proper operation of the aircraft systems. This servicing may include adjustments or repairs to restore functionality and safeguard safety.

If the measurement exceeds 2 inches, it signifies a more serious degradation of performance, warranting replacement of the viscous damper. This threshold indicates that the damper cannot effectively manage vibrations and loads as required, which is essential for maintaining stability and safety while the aircraft is in operation.

Thus, recognizing both the ranges for servicing and replacement emphasizes the importance of regular maintenance checks on the viscous damper to adhere to safety standards and ensure flight readiness.