# Airworthiness Directives; General Electric Company (GE) CT7-8, CT7-8A, CT7-8A1, CT7-8E, and CT7-8F5 Turboshaft Engines
> **Rule** · Final rule. · Published 2011-10-05 · Effective 2011-11-09 · 76 FR 61559
## Document
- **Document number:** 2011-25654
- **Category:** airworthiness
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 76 FR 61559
- **Publication date:** 2011-10-05
- **Effective date:** 2011-11-09
- **FAA docket:** Docket No. FAA-2011-0392
## Abstract

We are adopting a new airworthiness directive (AD) for the products listed above. This AD was prompted by four reports of unrecoverable engine stalls, during hover in a left-roll attitude. This AD requires the installation of an accessory gearbox (AGB) axis-A oil slinger nut to the axis-A shaft assembly. We are issuing this AD to prevent an unrecoverable engine stall, leading to a helicopter forced landing or accident.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2011/10/05/2011-25654/airworthiness-directives-general-electric-company-ge-ct7-8-ct7-8a-ct7-8a1-ct7-8e-and-ct7-8f5)
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