EASA AD 2021-0191-E
[Correction] Engine — Oil Pump — Replacement
Summary
EASA Airworthiness Directive 2021-0191-E is an emergency directive addressing the replacement of certain oil pumps on Austro Engine GmbH E4 and E4P engines. These engines are commonly installed on Diamond Aircraft Industries models DA 40 NG, DA 42 NG, DA 42 M-NG, and DA 62. The directive mandates replacement of affected oil pumps to prevent engine oil pressure loss and potential in-flight engine shutdown.
What Changed
This directive supersedes EASA Emergency AD 2021-0143-E and expands the list of affected oil pump serial numbers requiring replacement. It also corrects a previous error where fuel pumps were mistakenly referenced instead of oil pumps. The updated service bulletin MSB-E4-031 Revision 2 includes the expanded list of affected parts.
Why It Matters
This directive is critical for aviation professionals to ensure continued airworthiness and safety of aircraft equipped with affected Austro Engine E4 and E4P engines. Failure to comply could result in engine failure during flight, leading to forced landings and potential injury or damage. Operators, maintenance organizations, and compliance teams must prioritize these replacements to meet regulatory requirements and maintain safe operations.
What To Do
Operators must replace all affected oil pumps identified by serial number before the next flight after the effective date of this AD, which is 20 August 2021. Twin-engine aircraft with affected engines are permitted a single ferry flight to a maintenance location for compliance. Installation of any affected oil pump is prohibited from the effective date onward.
AI-generated summary from official EASA source document. Always verify against the original.