Mooney M20M Bravo — Weight And Balance

This Service Bulletin No. 079 from Hartzell Engine Technologies addresses the inspection of turbocharger wastegate and valve assemblies specifically for certain aircraft models, including the Mooney M20M Bravo. The bulletin outlines the affected parts, compliance requirements, and inspection procedures necessary to ensure continued airworthiness. It emphasizes the importance of using the most current information and provides guidelines for identifying affected assemblies. The document is intended for aircraft owners and maintenance personnel responsible for ensuring the safety and functionality of the turbocharger systems in the specified aircraft models.

• Affected turbocharger assemblies include P/N 470818-() and 470954-() manufactured between November 5, 2018, and May 15, 2019.
• Compliance is required within 50 hours of service or at the next scheduled inspection.
• Inspection of the turbocharger wastegate and valve assembly serial number is critical to determine if it is affected.
• If affected, the assembly must be replaced following the manufacturer's maintenance manual.
• Contact Hartzell Engine Technologies for support regarding this bulletin.