EASA SIB CE-11-32
M7 Aerospace LP (formerly Fairchild, Swearingen) SA226 aeroplanes - Engine Mount Section
Summary
The FAA Special Airworthiness Information Bulletin SAIB: CE-11-32 addresses an airworthiness concern for M7 Aerospace LP SA226-T, SA226-AT, and SA226-TC model airplanes regarding potential cracks in the engine mount lower truss assemblies, part number 27-62010. This bulletin provides guidance on inspection and modification procedures for the left and right engine mount lower truss assemblies to detect and address cracking issues. The bulletin is informational and does not mandate regulatory action under 14 CFR part 39.
What Changed
This bulletin introduces recommended inspection procedures and modification instructions for the engine mount lower truss assemblies on specified SA226 models. It references M7 Aerospace Service Bulletin 226-71-018 for inspection intervals and Service Bulletin 71-009 for modification instructions. The bulletin advises initial inspection within 800 hours time-in-service or 12 months from the issue date and recurring inspections every 12 months or 1,000 hours thereafter.
Why It Matters
This information is critical for operators and maintenance organizations to prevent potential structural failures due to cracks in engine mount assemblies, which could compromise flight safety. Early detection and modification reduce the risk of in-flight engine mount failure, ensuring continued airworthiness and operational reliability. Compliance with these recommendations supports proactive maintenance and risk management.
What To Do
Operators of M7 Aerospace LP SA226-T, SA226-AT, and SA226-TC airplanes should inspect the engine mount lower truss assemblies, part number 27-62010, following the procedures and intervals specified in Service Bulletin 226-71-018. If not already done, they should apply the modification detailed in Service Bulletin 71-009. Any cracked engine mount truss assembly must be replaced before further flight. Initial inspections should occur within 800 hours time-in-service or 12 months from May 11, 2011, with repeat inspections every 12 months or 1,000 hours thereafter.
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