Engine Fuel & Control - Cushioned Loop Clamp and Outer Fuel Manifold - Inspection / Replacement
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AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators of affected GE GEnx-1B engines must perform initial and repetitive visual inspections of the cushioned loop clamp and conduct spot fluorescent penetrant inspections of the outer fuel manifold as required. If damage or leakage is found, the outer fuel manifold must be replaced with an eligible part. The directive's compliance deadline is March 30, 2021, and ongoing inspections and replacements must follow the specified intervals.
Summary
The Federal Aviation Administration's Airworthiness Directive 2021-02-07 is a final rule addressing all General Electric Company GEnx-1B series turbofan engines. It mandates inspections and potential replacements related to the cushioned loop clamp (p-clamp) and the outer fuel manifold due to reported cracks causing fuel leakage. This directive applies to multiple GEnx-1B engine variants and aims to ensure continued airworthiness and safety.
What changed
This new airworthiness directive introduces requirements for initial and repetitive visual inspections of the p-clamp and spot fluorescent penetrant inspections of the outer fuel manifold. It also mandates replacement of the p-clamp at specified intervals and replacement of the outer fuel manifold if cracks or leaks are detected. Additionally, the directive updates labor hour estimates for manifold replacement and clarifies repair and compliance procedures.
Why it matters
This directive is critical for aviation professionals as it addresses a safety risk of fuel leakage from cracked outer fuel manifolds, which could lead to engine failure or fire hazards. Operators and maintenance teams must comply to prevent unsafe conditions and avoid operational disruptions. Accurate inspection and timely replacement reduce the risk of in-flight incidents and ensure regulatory compliance.
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