Engine – Oil Pump – Replacement
Superseded. Comply with 2021-0191-E, which replaces this document.
- Published
- Effective
- Deadline
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators of aircraft equipped with Austro Engine E4 and E4P engines must replace any affected oil pumps before the next flight after 18 June 2021, the effective date of the directive. Installation of affected oil pumps is prohibited from this date onward. Twin-engine aircraft with affected engines may conduct one ferry flight to a maintenance facility to perform the required replacement.
Summary
EASA Airworthiness Directive 2021-0143-E is an emergency directive addressing a safety issue with Austro Engine GmbH E4 and E4P engines, commonly installed on Diamond Aircraft Industries DA 40 NG, DA 42 NG, DA 42 M-NG, and DA 62 aeroplanes. The directive mandates the replacement of certain oil pumps identified by specific part numbers and serial numbers due to a manufacturing defect that could cause oil pump failure. This directive ensures continued airworthiness by prohibiting the installation of affected oil pumps.
What changed
EASA Airworthiness Directive 2021-0143-E introduces a mandatory replacement of affected oil pumps with serviceable parts on all E4 and E4P engines. It prohibits the installation of any affected oil pump parts from the effective date and allows a single ferry flight for twin-engine aircraft to reach a maintenance location for compliance. This is a new emergency directive issued to address an immediate safety concern.
Why it matters
This directive is critical for aviation professionals because it addresses a potential engine oil pressure loss that could lead to engine in-flight shutdown and forced landing, posing risks to aircraft safety and occupant injury. Operators and maintenance organizations must ensure compliance to prevent unsafe conditions and maintain regulatory approval for aircraft operation. It also impacts parts inventory management by restricting the use of affected oil pumps.
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