Airworthiness Directives; CFM International S.A. Turbofan Engines
airworthiness · Rule · Final rule; request for comments. · Published 2018-11-30 · Effective 2018-12-17 · 83 FR 61529
Document
Document number
2018-26026
Federal Register citation
83 FR 61529
Type
Rule
Action
Final rule; request for comments.
Category
airworthiness
Manufacturer
CFM International S.A. Turbofan
Publication date
2018-11-30
Effective date
2018-12-17
FAA docket
Docket No. FAA-2018-0869
Abstract
We are adopting a new airworthiness directive (AD) for all CFM International S.A. (CFM) LEAP-1B21, LEAP-1B23, LEAP-1B25, LEAP-1B27, LEAP-1B28, LEAP-1B28B1, LEAP-1B28B2, LEAP-1B28B2C, LEAP-1B28B3, LEAP- 1B28BBJ1, and LEAP-1B28BBJ2 turbofan engines with a certain high- pressure turbine (HPT) stator case (HPT cases) installed. This AD requires removal of affected HPT cases from service and their replacement with a part eligible for installation. This AD was prompted by the discovery of a quality escape at a manufacturing facility involving unapproved welds on HPT cases. We are issuing this AD to address the unsafe condition on these products.