2020-06633: Airworthiness Directives; Leonardo S.p.A. Helicopters
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The FAA proposes to adopt a new airworthiness directive (AD) for certain Leonardo S.p.A. (Leonardo) Model AB139 and AW139 helicopters. This proposed AD would require various inspections of the main rotor (M/R) damper, and depending on the inspection results, removing from service or replacing certain parts. This proposed AD would also require reducing the torque of the M/R damper hub attachment bolts, marking parts, installing a special washer, and installing a certain part-numbered M/R damper and prohibit installing other part- numbered M/R dampers. This proposed AD is prompted by reports of failed M/R dampers. The proposed actions are intended to address the unsafe condition on these products.
The agency’s own summary, as published.
What this changes
Amends 1 part of the Code of Federal Regulations — the standing rules this notice rewrites.
Rulemaking docket
We haven’t pulled this rulemaking’s full docket yet. View docket FAA-2020-0283 on Regulations.gov →
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