EASA AD 2019-0041
Time Limits / Maintenance Checks — Airworthiness Limitations Section — Amendment
Summary
EASA Airworthiness Directive 2019-0041 is an airworthiness directive issued by the European Union Aviation Safety Agency concerning Austro Engine GmbH E4 series engines. It applies to E4 and E4P engine models installed on aircraft such as Diamond Aircraft Industries DA 40 NG, DA 42 NG, DA 42 M-NG, and DA 62. The directive mandates compliance with updated airworthiness limitations and maintenance tasks to ensure continued engine safety.
What Changed
EASA Airworthiness Directive 2019-0041 introduces revised airworthiness limitations for Austro Engine E4 and E4P engines, including new life limits for the engine timing chain and fuel injectors. These changes are incorporated in the Austro Engine Temporary Revision MM-TR-MDC-E4-454 and Mandatory Service Bulletin MSB-E4-025/3. The directive requires operators to replace components before exceeding these new life limits and to update their approved Aircraft Maintenance Programme accordingly.
Why It Matters
This directive is critical for aviation professionals because failure to comply with the updated airworthiness limitations could lead to unsafe engine conditions. Operators, maintenance organizations, and compliance teams must ensure that maintenance tasks and life-limited parts replacements are performed within the specified intervals to maintain airworthiness and regulatory compliance. The update helps prevent potential engine failures and enhances overall flight safety.
What To Do
Operators must replace engine components before exceeding the life limits specified in the updated airworthiness limitations starting from 11 March 2019. Additionally, within 12 months of the effective date, the approved Aircraft Maintenance Programme must be revised to incorporate these new limitations. After updating the maintenance program, individual task records are no longer required to demonstrate compliance with this directive.
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