airworthiness · Rule · Final rule; request for comments. · Published 2019-03-13 · Effective 2019-03-28 · 84 FR 8965
Document
Document number
2019-04529
Federal Register citation
84 FR 8965
Type
Rule
Action
Final rule; request for comments.
Category
airworthiness
Manufacturer
Leonardo S.p.A.
Publication date
2019-03-13
Effective date
2019-03-28
FAA docket
Docket No. FAA-2019-0092
Abstract
We are adopting a new airworthiness directive (AD) for Leonardo S.p.A. Model AB139, AW139, AW169, and AW189 helicopters. This AD requires removing certain part-numbered and serial-numbered tail rotor (T/R) duplex bearings from service. This AD is prompted by a report of a failed T/R duplex bearing roughness inspection. The actions of this AD are intended to address an unsafe condition on these products.