Flight Controls - Flap Nose Roller Fitting, Nose Roller Support Bracket, and Adjacent Rib Support Structure - Replacement
- Published
- Effective
- Deadline
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators of affected Learjet models must replace the flap nose roller fitting, nose roller support bracket, and adjacent rib support structure within 24 months or 400 landings from the effective date, whichever occurs first. Repairs must follow the specified Bombardier Learjet service bulletins and use FAA-approved repair methods when applicable.
Summary
Federal Aviation Administration Airworthiness Directive 2018-19-04 is a final rule addressing certain Learjet, Inc. Models 28, 29, 31, 31A, 35, 35A, 36, 36A, 55, 55B, 55C, and 60 airplanes. The directive mandates replacement of the flap nose roller fitting, nose roller support bracket, and adjacent rib support structure with improved components to prevent fatigue cracks caused by repetitive flap loads.
What changed
This new airworthiness directive introduces a mandatory replacement of specific flap control components on affected Learjet models to mitigate the risk of flap nose roller support bracket failure. It clarifies that repairs must use methods approved by the FAA Wichita ACO Branch rather than requiring repair instructions directly from Learjet.
Why it matters
This directive is critical for aviation professionals as it addresses a safety risk that could lead to loss of roll control during approach, potentially causing accidents. Operators, maintenance organizations, and compliance teams must ensure timely replacement of affected parts to maintain aircraft airworthiness and regulatory compliance.
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