# Airworthiness Directives; General Electric Company Turbofan Engines
> **Rule** · Final rule; request for comments. · Published 2017-04-06 · Effective 2017-04-21 · 82 FR 16728
## Document
- **Document number:** 2017-06715
- **Category:** airworthiness
- **Manufacturer:** General Electric Company Turbofan
- **Type:** Rule
- **Action:** Final rule; request for comments.
- **Citation:** 82 FR 16728
- **Publication date:** 2017-04-06
- **Effective date:** 2017-04-21
- **FAA docket:** Docket No. FAA-2013-0879
## Abstract

We are superseding Airworthiness Directive (AD) 2013-24-17 for General Electric Company (GE) GE90-110B1 and GE90-115B turbofan engines with certain high-pressure compressor (HPC) rotor stage 2-5 spools installed. AD 2013-24-17 required removing these spools from service at times determined by a drawdown plan. This AD retains the same requirements as AD 2013-24-17. This AD also adds additional part number (P/N) HPC spools to the applicability. This AD was prompted by reports of cracking on these additional spools. We are issuing this AD to correct the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2017/04/06/2017-06715/airworthiness-directives-general-electric-company-turbofan-engines)
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