Beechcraft 58TC Baron — Systems Description

This document is a service bulletin for the Beechcraft Baron 58P and 58TC models, specifically addressing the Continental TSIO-520-L engines with serial numbers ranging from 508000 to 508261. It outlines critical inspection procedures for the turbocharger system, including checks for cracks, wall thickness, and overall integrity of various components. The bulletin mandates inspections every 25 hours of operation until specific part numbers are installed, ensuring the safety and reliability of the aircraft's engine system. This document is essential for maintenance personnel and operators of the Baron 58P and 58TC to ensure compliance with airworthiness directives and to maintain optimal engine performance.

• Inspections of the turbocharger system are required every 25 hours of operation.
• Minimum wall thickness for the turbo adapter is .075 inches; replace if less.
• Inspect for cracks in elbows and turbo adapter; replace if found.
• Check joints for freedom of movement and distortion during inspections.
• Inspect tailpipe for thinning and internal corrosion.