# Airworthiness Directives; General Electric Company GE90 Series Turbofan Engines
> **Rule** · Final rule; request for comments. · Published 1998-07-14 · Effective 1998-07-29 · 63 FR 37761
## Document
- **Document number:** 98-18647
- **Category:** airworthiness
- **Manufacturer:** General Electric Company GE90 Series Turbofan
- **Type:** Rule
- **Action:** Final rule; request for comments.
- **Citation:** 63 FR 37761
- **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.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1998/07/14/98-18647/airworthiness-directives-general-electric-company-ge90-series-turbofan-engines)
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