Diamond DA42 Aeroplanes - Starting Procedure using External Power
- Published
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators and maintenance personnel should follow the procedures outlined in Diamond Aircraft Industries Service Information SI 42-040, which is attached to the Safety Information Notice. Only one engine should be started using external power to allow the main battery to recover sufficiently for safe flight. No immediate regulatory action is required, but stakeholders should monitor for future Service Bulletins that may mandate system modifications.
Summary
EASA Safety Information Notice No. 2007-08 is an informational document addressing the starting procedure using external power for Diamond DA-42 aeroplanes. It highlights the risk of total electrical power loss during take-off if both engines are started using external power due to the FADEC-controlled engines requiring uninterrupted electrical power. The notice references Diamond Aircraft Industries Service Information SI 42-040 for the correct procedure to start only one engine with external power to ensure battery recovery.
What changed
This Safety Information Notice introduces guidance on the correct starting procedure for Diamond DA-42 aircraft when using external power. It clarifies that only one engine should be started with external power to prevent electrical power loss and engine failure. Additionally, Diamond Aircraft Industries and Thielert are collaborating to develop a more robust system to prevent recurrence, which may be subject to a future mandated Service Bulletin.
Why it matters
This notice is important for aviation professionals operating or maintaining Diamond DA-42 aircraft because improper starting procedures can lead to total electrical power loss and dual engine failure during critical phases of flight. Understanding and following the correct procedure ensures flight safety and prevents accidents related to electrical system failures. Maintenance and compliance teams must be aware of these recommendations to avoid operational risks and ensure adherence to manufacturer guidance.
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