Airworthiness Directives; General Electric Company Turbofan Engines
airworthiness · Rule · Final rule. · Published 2020-10-13 · Effective 2020-11-17 · 85 FR 64375
Document
Document number
2020-22505
Federal Register citation
85 FR 64375
Type
Rule
Action
Final rule.
Category
airworthiness
Manufacturer
General Electric Company Turbofan
Publication date
2020-10-13
Effective date
2020-11-17
FAA docket
Docket No. FAA-2020-0733
Abstract
The FAA is adopting a new airworthiness directive (AD) for certain General Electric Company (GE) GE90-110B1 and GE90-115B model turbofan engines. This AD was prompted by the detection of melt-related freckles in the billet, which may reduce the life limits of certain high-pressure turbine (HPT) rotor stage 2 disks and certain rotating compressor discharge pressure (CDP) HPT seals. This AD requires the replacement of the affected HPT rotor stage 2 disks and rotating CDP HPT seals. The FAA is issuing this AD to address the unsafe condition on these products.