Main Rotor — Vibration Absorber Fairing — Installation
- Published
- Effective
- Deadline
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
From the effective date of 12 March 2020, operators must install the affected vibration absorber fairing part using the affected hardware only in accordance with the instructions in ASB-37-19-307. Maintenance personnel should review and apply the updated torque specifications and installation procedures. Alternative methods of compliance may be approved by EASA if properly substantiated.
Summary
EASA Airworthiness Directive 2020-0038 is an airworthiness directive issued by the European Union Aviation Safety Agency affecting all PZL W-3A and PZL W-3AS helicopters. It addresses the installation of the main rotor vibration absorber fairing, specifically focusing on the affected fairing part number 30.23.015.00.03 and associated hardware. The directive mandates compliance with updated installation instructions to ensure proper securing of the fairing to the vibration absorber.
What changed
This new airworthiness directive introduces a requirement to use improved installation instructions provided by WSK “PZL-ŚWIDNIK” S.A. in Alert Service Bulletin ASB-37-19-307. It addresses a previously unreported torque value for tightening the castellated nut securing the vibration absorber fairing, which was identified after a broken bolt incident. The directive mandates that installation of the affected part must follow these updated procedures to prevent hardware failure.
Why it matters
This directive is critical for aviation professionals as it prevents potential detachment of the vibration absorber fairing, which could cause damage to helicopter components and reduce flight control. Operators and maintenance organizations must ensure compliance to maintain aircraft airworthiness and safety. Failure to comply could lead to unsafe flight conditions and regulatory violations.
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