# Airworthiness Directives; General Electric Company Turboprop Engines
> **Rule** · Final rule; request for comments. · Published 2018-02-13 · Effective 2018-02-28 · 83 FR 6125
## Document
- **Document number:** 2018-02917
- **Category:** airworthiness
- **Manufacturer:** General Electric Company Turboprop
- **Type:** Rule
- **Action:** Final rule; request for comments.
- **Citation:** 83 FR 6125
- **Publication date:** 2018-02-13
- **Effective date:** 2018-02-28
- **FAA docket:** Docket No. FAA-2017-0943
## Abstract

We are adopting a new airworthiness directive (AD) for certain General Electric Company (GE) CT7-5A2, CT7-5A3, CT7-7A, CT7-7A1, CT7- 9B, CT7-9B1, CT7-9B2, CT7-9C and CT7-9C3 model turboprop engines. This AD requires initial and repetitive visual inspection and fluorescent- penetrant inspection (FPI) of the main propeller shaft. This AD was prompted by the failure of a main propeller shaft. We are issuing this AD to address the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2018/02/13/2018-02917/airworthiness-directives-general-electric-company-turboprop-engines)
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