Engine — Thermostatic Oil Cooler Bypass Valve — Inspection / Installation
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AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators must perform a visual inspection of the engine adaption fitting during the next scheduled maintenance or within 12 months of 2019-09-10, whichever occurs first. If the thermostatic oil cooler bypass valve is not installed, it must be installed within 6 months following the inspection. All actions must follow the instructions in CEAPR Mandatory Service Bulletin 190102.
Summary
EASA Airworthiness Directive 2019-0211 is an airworthiness directive addressing certain CEAPR DR 400 aeroplanes equipped with Lycoming engines. It mandates inspection and possible installation of a thermostatic oil cooler bypass valve on affected aircraft models including DR 400/100 through DR 400/200 I with serial numbers 2654 to 2721. The directive aims to ensure engine cooling system integrity to prevent overheating.
What changed
This new airworthiness directive introduces a one-time inspection requirement to verify the presence of the thermostatic oil cooler bypass valve on specified DR 400 aeroplanes. If the valve is missing, the directive requires installation of the valve within a specified timeframe. It also references CEAPR Mandatory Service Bulletin 190102 for inspection and installation procedures.
Why it matters
This directive is critical for aviation professionals as it addresses a potential unsafe condition that could lead to engine overheating and in-flight shutdown. Compliance ensures continued airworthiness and safety of affected aircraft, preventing possible forced landings and damage. Maintenance and compliance teams must incorporate these inspections and corrective actions into scheduled maintenance to meet regulatory requirements.
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