# Airworthiness Directives; Turbomeca S.A. Turboshaft Engines
> **Rule** · Final rule. · Published 2016-05-04 · Effective 2016-06-08 · 81 FR 26675
## Document
- **Document number:** 2016-10279
- **Category:** airworthiness
- **Manufacturer:** Turbomeca S.A. Turboshaft
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 81 FR 26675
- **Publication date:** 2016-05-04
- **Effective date:** 2016-06-08
- **FAA docket:** Docket No. FAA-2015-7490
## Abstract

We are adopting a new airworthiness directive (AD) for certain Turbomeca S.A. Astazou XIV B and H turboshaft engines. This AD requires a one-time inspection of the front surface of the 3rd stage turbine for a groove. This AD was prompted by a report of a crack on the 3rd stage turbine wheel. We are issuing this AD to prevent cracks in the 3rd stage turbine wheel, failure of the engine, in-flight shutdown, and loss of control of the helicopter.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2016/05/04/2016-10279/airworthiness-directives-turbomeca-sa-turboshaft-engines)
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