2020-20228: Airworthiness Directives; Leonardo S.p.a. Helicopters (Type Certificate Previously Held by Agusta S.p.A.)
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The FAA proposes to supersede Airworthiness Directive (AD) 2017-23-08 for Agusta S.p.A. (now Leonardo S.p.a.) Model AB139 and AW139 helicopters. AD 2017-23-08 requires repetitively inspecting the main rotor (M/R) rotating scissors, removing certain lower half scissor spherical bearings (bearings) from service, replacing the removed bearings with a new bearing, and installing a special nut. Since the FAA issued AD 2017-23-08, investigation results determined that a quality control issue may have affected the production of the affected bearings. This proposed AD would retain the requirements of AD 2017-23- 08 and require replacing each affected bearing with a certain part- numbered bearing. The actions of this proposed AD are intended to address an 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
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