Wings – Root Ribs – Inspection
Superseded. Comply with 2022-0146, 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 ASW 15 sailplanes with serial numbers 15001 to 15183 must inspect affected wing root ribs within 30 days of 2021-08-23 and then every 12 months. If damage is detected, the affected parts must be replaced with improved laminated ribs before further flight. Complete replacement of all affected ribs with improved parts ends the need for repetitive inspections. Only improved parts may be installed on these sailplanes going forward.
Summary
EASA Airworthiness Directive 2021-0187 is an airworthiness directive issued for Alexander Schleicher GmbH & Co. ASW 15 sailplanes, specifically serial numbers 15001 through 15183. It addresses inspection and replacement requirements for wing root ribs to ensure structural integrity. The directive mandates repetitive inspections and restricts installation of certain affected parts to maintain airworthiness.
What changed
This directive introduces mandatory repetitive inspections of the right-hand and left-hand front and rear root ribs that are not improved parts, with replacement required if damage is found. It also establishes that replacing all affected ribs with improved laminated ribs constitutes a terminating action for inspections. Additionally, it restricts installation to only improved parts from the effective date or after modification.
Why it matters
This directive is critical for maintaining the structural integrity of the ASW 15 sailplane wings, preventing potential safety risks due to rib damage. Operators and maintenance organizations must comply to avoid unsafe conditions that could compromise flight safety. Compliance ensures continued airworthiness and adherence to European aviation safety regulations.
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