Airworthiness Directives; General Electric Company GE90 Series Turbofan Engines
airworthiness · Rule · Final rule; request for comments. · Published 1998-07-14 · Effective 1998-07-29 · 63 FR 37761
Document
Document number
98-18647
Federal Register citation
63 FR 37761
Type
Rule
Action
Final rule; request for comments.
Category
airworthiness
Manufacturer
General Electric Company GE90 Series Turbofan
Publication date
1998-07-14
Effective date
1998-07-29
FAA docket
Docket No. 98-ANE-17-AD
Abstract
This amendment adopts a new airworthiness directive (AD) that is applicable to General Electric Company (GE) GE90 series turbofan engines. This action requires initial and repetitive eddy current inspections (ECI) for cracks in the high pressure compressor (HPC) stage 2-6 spool, and, if necessary, replacement with serviceable parts. This amendment is prompted by reports of cracks in the stage 3-4 and stage 4-5 interstage seal teeth and spacer arms. The actions specified in this AD are intended to identify cracks in the HPC stage 2-6 spool, which could result in an uncontained engine failure and damage to the aircraft.