Airworthiness Directives; General Electric Company Turbofan Engines
airworthiness · Rule · Final rule; request for comments. · Published 2023-03-10 · Effective 2023-03-27 · 88 FR 14871
Document
Document number
2023-04869
Federal Register citation
88 FR 14871
Type
Rule
Action
Final rule; request for comments.
Category
airworthiness
Manufacturer
General Electric Company Turbofan
Publication date
2023-03-10
Effective date
2023-03-27
FAA docket
Docket No. FAA-2023-0423
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 a manufacturer investigation which discovered that florescent penetrant inspections (FPI) were not performed on the dovetail pressure face of certain high-pressure compressor (HPC) rotor spools at overhaul. This AD requires FPI of the affected HPC rotor stage 7-9 spool and, depending on the results of the inspection, replacement with a part eligible for installation. The FAA is issuing this AD to address the unsafe condition on these products.