Diamond DA40 NG — Service Bulletins

This document is an Airworthiness Directive (AD) schedule applicable to the Diamond DA 40 series, including the DA 40, DA 40 D, DA 40 F, and DA 40 NG models. Issued on July 31, 2025, it outlines mandatory inspections, modifications, and compliance requirements to ensure the continued airworthiness of these aircraft. The directives are issued by Transport Canada and are essential for maintaining safety standards in the operation of the DA 40 series. The document provides specific details on various components that require inspection or modification, along with compliance timelines to prevent potential safety issues.

• Compliance with ADs is mandatory for safety and airworthiness.
• Inspect fuel filter assemblies to prevent in-flight power loss.
• Check FADEC wire harness installations to avoid engine shutdown.
• Inspect fuel selector valves to prevent fuel starvation.
• Monitor mixture control cables for potential failures.