airworthiness · Rule · Final rule. · Published 2018-08-21 · Effective 2018-09-25 · 83 FR 42207
Document
Document number
2018-18021
Federal Register citation
83 FR 42207
Type
Rule
Action
Final rule.
Category
airworthiness
Manufacturer
Rolls-Royce plc Turbojet
Publication date
2018-08-21
Effective date
2018-09-25
FAA docket
Docket No. FAA-2017-1108
Abstract
We are superseding Airworthiness Directive (AD) 2016-03-03 for all Rolls-Royce plc (RR) Viper Mk. 521, Viper Mk. 522, and Viper Mk. 601-22 turbojet engines. AD 2016-03-03 required reducing the life of certain critical parts. This AD requires reducing the life of certain critical parts and adds additional engine parts to the applicability. This AD was prompted by a determination made by RR that additional parts for the applicable RR Viper turbojet engine models are affected. We are issuing this AD to address the unsafe condition on these products.