Summary
The FAA is adopting a new airworthiness directive (AD) for all General Electric Company (GE) GE90-110B1 and GE90-115B model turbofan engines with a certain high-pressure turbine (HPT) rotor stage 2 disk installed. This AD was prompted by a report from the manufacturer that a subsurface anomaly was found on a HPT rotor stage 2 disk. This AD requires an ultrasonic inspection (USI) of the HPT rotor stage 2 disk and, depending on the result of the inspection, replacement of the HPT rotor stage 2 disk with a part eligible for installation. The FAA is issuing this AD to address the unsafe condition on these products.
Directive Details
AD Number
FAA-2020-0494
Document Number
2020-20337
Type
Rule
Publication Date
September 16, 2020
Effective Date
October 21, 2020
Affected Manufacturer
General Electric Company Turbofan
Criticality
routine
Emergency
No
Docket ID
Docket No. FAA-2020-0494
Topics
Official Documents
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