Diamond DA20 — Maintenance Manual

This document serves as a maintenance manual for the W69EK7 series wood propeller specifically designed for the Diamond DA20-C1 aircraft. It provides detailed instructions on installation, operation, and maintenance procedures for the propeller, ensuring safe and effective performance. The manual outlines the necessary components for installation, torque specifications, and maintenance schedules to ensure the propeller remains in optimal condition. It is intended for use by qualified personnel who hold the appropriate FAA licenses for aircraft maintenance and repair.

• Propeller installation torque should be between 370-380 in-lbs (31-32 ft-lbs).
• Recheck propeller bolt torque after the first flight and every 50 hours thereafter.
• Use MS21044N7 self-locking nuts or AN310-7 castellated nuts for installation.
• Inspect the propeller hub for cracks and elongation of bolt holes regularly.
• The propeller must be removed from service if it shows significant damage or wear.