EASA AD US-2024-01-06
Fuselage - Skin Repairs at Stringer S—17 - Repetitive Inspections
Summary
Federal Aviation Administration Airworthiness Directive 2024-01-06 is a final rule addressing certain Boeing 737-600, 737-700, and 737-800 series airplanes. It mandates repetitive inspections of fuselage skin repairs at Stringer S-17 to detect cracks and requires corrective actions if necessary. This directive aims to ensure continued airworthiness by preventing fatigue cracking that could compromise structural integrity.
What Changed
This new airworthiness directive introduces mandatory repetitive inspections for cracks in skin repairs at Stringer S-17 on specified Boeing 737 models. It also clarifies acceptable corrosion-inhibiting compounds and updates procedures for alternative methods of compliance. The directive replaces inadequate inspection requirements previously identified by the design approval holder.
Why It Matters
This directive is critical for aviation professionals as it addresses a potential safety risk from undetected fatigue cracks in fuselage skin repairs, which could lead to rapid decompression and structural failure. Operators, maintenance, and compliance teams must implement these inspections to maintain aircraft safety and regulatory compliance. It also provides clarity on inspection protocols and acceptable materials, facilitating consistent maintenance practices.
What To Do
Operators of affected Boeing 737-600, 737-700, and 737-800 airplanes must perform repetitive inspections of the fuselage skin repairs at Stringer S-17 as specified in Boeing Alert Service Bulletin 737-53A1217 Revision 1. Corrective actions must be taken if cracks are found. Compliance with this directive is required by March 7, 2024, the effective date of the AD.
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