Equipment / Furnishings — Large Hook Damper Assembly — Modification
- Published
- Effective
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators of MBB-BK117 C-2 and D-2 helicopters must modify and reidentify affected Large Hook Damper Assemblies within 12 months of 15 September 2025 or replace them with serviceable parts. Installation of affected parts is restricted after 15 September 2026. Compliance must follow the instructions in Airbus Helicopters Alert Service Bulletin MBB-BK117-25-97-0012.
Summary
EASA Airworthiness Directive 2025-0188 is an airworthiness directive issued by the European Union Aviation Safety Agency affecting Airbus Helicopters Deutschland GmbH MBB-BK117 C-2 and D-2 helicopters. The directive addresses the Large Hook Damper Assembly, specifically parts with Part Number 44307-480, installed on these helicopter models. It mandates modification and reidentification of affected parts to ensure continued airworthiness and safety.
What changed
This new directive introduces a requirement to modify and reidentify the Large Hook Damper Assembly with Part Number 44307-480 due to potential localized yielding in the mating threads of the standard MS18027 type hook P/N 42305-283. It allows replacement of affected parts with serviceable parts as an alternative compliance method and sets installation restrictions for affected parts starting 12 months after the effective date.
Why it matters
This directive is critical for aviation professionals as it addresses a potential failure risk in the hoist load system that could lead to loss of load and injury. Operators and maintenance organizations must ensure compliance to maintain aircraft safety and regulatory conformity. Failure to comply could result in unsafe conditions and regulatory penalties.
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