Summary
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.
Directive Details
AD Number
FAA-2020-0733
Document Number
2020-22505
Type
Rule
Publication Date
October 13, 2020
Effective Date
November 17, 2020
Affected Manufacturer
General Electric Company Turbofan
Criticality
routine
Emergency
No
Docket ID
Docket No. FAA-2020-0733
Topics
Official Documents
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