Diamond DA20-A1 Katana — Airworthiness Directives

This document is an Airworthiness Directive (AD) schedule issued by the CAA of New Zealand, specifically addressing Hoffmann propellers. It includes various directives related to propeller maintenance and inspection requirements to ensure safety and compliance. The directives are applicable to multiple aircraft models, including the Diamond DA20-A1 Katana, which is noted for its use of specific propeller models. The document outlines compliance requirements, effective dates, and inspection protocols to prevent potential failures that could compromise flight safety. Pilots and maintenance personnel should refer to this schedule to ensure adherence to the latest safety standards and directives.

• Propeller mounting bolts must be replaced with improved versions marked with 'V' and torqued to 24.3 to 25.8 foot-pounds (33 to 35 Newton-meters).
• Inspect pitch control rods daily for cracks and other issues to prevent loss of controllability.
• Compliance with ADs is mandatory within specified timeframes, such as within the next 10 hours TIS or 7 days for certain directives.
• The document includes directives applicable to multiple aircraft, including the Diamond DA20-A1 Katana and others.
• Links to additional State of Design ADs are provided for further reference.