EASA SIB 2009-20
Lifesaving Systems Corp. D-Lok Hook of the Rescue Hoist — Inspection / Replacement
Summary
EASA Safety Information Bulletin 2009-20 is an advisory document concerning the Lifesaving Systems Corp. D-Lok Hook assemblies, Part Numbers 410-A and 410-F, used on rescue hoists in various helicopters. It informs operators about detected manufacturing discrepancies in hooks from lots 208 and 1108, which may be installed on multiple helicopter types including those with Breeze Hoist installations. The bulletin supports the inspection and replacement actions outlined in Goodrich Service Bulletin 42315-489-01 Revision 1.
What Changed
This bulletin highlights newly identified manufacturing defects in specific batches of Lifesaving Systems Corp. D-Lok Hooks, prompting EASA to issue Airworthiness Directive 2009-0124 requiring inspections and potential replacements. It also expands the scope of affected helicopters beyond those initially identified by Goodrich, including additional hoist installations. The bulletin serves to raise awareness and endorse recommended safety measures while indicating that the AD may be updated as more affected helicopters are identified.
Why It Matters
The bulletin is important for aviation professionals because it addresses potential safety risks associated with rescue hoist hooks that could compromise hoist operations during critical missions. Operators, maintenance organizations, and compliance teams must be aware of the affected parts and take appropriate inspection and replacement actions to maintain airworthiness and operational safety. Early identification and corrective action help prevent possible failures and ensure regulatory compliance.
What To Do
Owners and operators of helicopters equipped with Lifesaving Systems Corp. D-Lok Hooks, Part Numbers 410-A or 410-F from lots 208 or 1108, should inspect these hooks as per Goodrich Service Bulletin 42315-489-01 Revision 1 and replace any hooks found to be non-compliant. They should monitor updates to EASA Airworthiness Directive 2009-0124 for any amendments expanding affected aircraft types. Contact EASA or the manufacturers for further guidance and obtain relevant service documents as needed.
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