Airworthiness Directives; CFM International, S.A. Turbofan Engines Modified by Supplemental Type Certificate SE00034EN
airworthiness · Rule · Final rule; request for comments. · Published 2013-01-28 · Effective 2013-01-28 · 78 FR 5712
Document
Document number
2013-01360
Federal Register citation
78 FR 5712
Type
Rule
Action
Final rule; request for comments.
Category
airworthiness
Publication date
2013-01-28
Effective date
2013-01-28
FAA docket
Docket No. FAA-2012-1289
Abstract
We are adopting a new airworthiness directive (AD) for CFM International, S.A. CFM56-3, CFM56-3B, and CFM56-3C turbofan engines. This AD requires removal from service of certain high-pressure turbine (HPT) disks manufactured by Global Material Solutions of Pratt & Whitney, at reduced maximum life limits. This AD was prompted by a report of a forging process error during manufacture of these HPT disks. We are issuing this AD to prevent uncontained release of multiple turbine blades, damage to the engine, and damage to the airplane.