airworthiness · Rule · Final rule; request for comments. · Published 2020-06-23 · Effective 2020-07-08 · 85 FR 37551
Document
Document number
2020-13440
Federal Register citation
85 FR 37551
Type
Rule
Action
Final rule; request for comments.
Category
airworthiness
Manufacturer
Leonardo S.p.A.
Publication date
2020-06-23
Effective date
2020-07-08
FAA docket
Docket No. FAA-2019-1020
Abstract
The FAA is adopting a new airworthiness directive (AD) for certain Leonardo S.p.A. Model A119 and AW119 MKII helicopters. This AD requires inspecting for movement and the tightening torque of the tail rotor (T/R) plug, the installation of the outboard and inboard faces of the T/R duplex bearing, and the condition of the T/R plug threads, nut threads, and T/R duplex bearing. Depending on the inspection results, this AD requires removing parts from service, reassembling the T/R duplex assembly, and reporting information. This AD also prohibits installing a T/R duplex bearing unless it has been inspected. This AD was prompted by findings from a preliminary investigation of a Model AW119 MKII helicopter accident. The actions of this AD are intended to address an unsafe condition on these products.