EASA SIB 2009-26
Lifesaving Systems Corporation (LSC) D-Lok Hook installed on Rescue Hoists — Inspection / Replacement
Summary
EASA Safety Information Bulletin 2009-26 addresses the inspection and replacement of Lifesaving Systems Corporation (LSC) D-Lok Hooks installed on rescue hoists, specifically those with Part Numbers 410-A and 410-F. These hooks, used on various helicopters including installations by Goodrich and Breeze-Eastern, were found to have material irregularities due to a manufacturing change from forged to cast material. The bulletin informs operators about the associated Airworthiness Directives and the need for compliance.
What Changed
EASA Safety Information Bulletin 2009-26 follows the issuance and supersession of Airworthiness Directives 2009-0124 and 2009-0148E by introducing AD 2009-0179-E, which retains inspection and removal requirements for affected hooks but narrows applicability and adds the requirement to return removed hooks to the hoist manufacturer. It also highlights that substantiating data may be requested from Goodrich to support alternative compliance methods.
Why It Matters
This bulletin is critical for aviation professionals because the affected LSC D-Lok Hooks pose a safety risk due to potential material defects, which could compromise rescue hoist operations. Operators, maintenance organizations, and compliance teams must ensure timely inspections and replacements to maintain airworthiness and regulatory compliance. Failure to act could result in unsafe conditions and regulatory violations.
What To Do
Operators of helicopters equipped with LSC D-Lok Hooks P/N 410-A or 410-F from Lot numbers 208 or 1108 must inspect and remove the affected hooks within 30 days after 11 July 2009. Removed hooks must be returned to the hoist manufacturer. For alternative compliance, substantiating data may need to be obtained from Goodrich. Contact EASA or the manufacturers for further guidance.
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