Mooney M20A — Parts Catalog

This document is a service bulletin issued by Mooney International Corporation, specifically addressing the inspection of smooth skin elevators and their balance weights on various Mooney aircraft models. The bulletin highlights the potential for galvanic corrosion in the hybrid balance weights used in these elevators, particularly in the M20F model, and outlines the necessary inspection procedures and compliance requirements. It is crucial for owners and operators of affected Mooney models to adhere to the guidelines provided to ensure safety and airworthiness before the next flight. The bulletin includes specific instructions for identifying the balance weights and actions to take if abnormalities are found.

• Inspect smooth skin elevator balance weights for galvanic corrosion before the next flight.
• If cracks are found in the balance weights, do not fly the aircraft and contact Mooney Technical Support.
• The affected balance weight part number is 430018-1; if this is found, it must be replaced with a newer version.
• Visual inspections should include checking for abnormalities and may require paint removal for thorough examination.
• Compliance with this service bulletin is mandatory for safety and airworthiness.