# Airworthiness Directives; GE Aviation Czech s.r.o. (Type Certificate Previously Held by WALTER Engines a.s., Walter a.s., and MOTORLET a.s.) Turboprop Engines
> **Rule** · Final rule. · Published 2021-08-17 · Effective 2021-09-21 · 86 FR 45858
## Document
- **Document number:** 2021-17519
- **Category:** airworthiness
- **Manufacturer:** GE Aviation Czech s.r.o. (Type Certificate Previously Held by WALTER
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 86 FR 45858
- **Publication date:** 2021-08-17
- **Effective date:** 2021-09-21
- **FAA docket:** Docket No. FAA-2021-0316
## Abstract

The FAA is adopting a new airworthiness directive (AD) for all GE Aviation Czech s.r.o. (GEAC) H75-200, H80-100, and H80-200 model turboprop engines. This AD was prompted by several reports of engine gas generator speed (Ng) rollbacks occurring below idle on GEAC H75- 200, H80-100, and H80-200 model turboprop engines. This AD requires an inspection of a certain part number (P/N) fuel control unit (FCU) and, if deficiencies are detected, replacement of the FCU with a part eligible for installation. The FAA is issuing this AD to address the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2021/08/17/2021-17519/airworthiness-directives-ge-aviation-czech-sro-type-certificate-previously-held-by-walter-engines-as)
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