# 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 2022-06-27 · Effective 2022-08-01 · 87 FR 37986
## Document
- **Document number:** 2022-13503
- **Category:** airworthiness
- **Manufacturer:** GE Aviation Czech s.r.o. (Type Certificate Previously held by WALTER
- **Type:** Rule
- **Action:** Final rule.
- **Citation:** 87 FR 37986
- **Publication date:** 2022-06-27
- **Effective date:** 2022-08-01
- **FAA docket:** Docket No. FAA-2022-0459
## Abstract

The FAA is adopting a new airworthiness directive (AD) for all GE Aviation Czech s.r.o. (GEAC) M601D-11 model turboprop engines. This AD was prompted by the manufacturer revising the airworthiness limitations section (ALS) of the existing engine maintenance manual (EMM) to include a visual inspection of the centrifugal compressor case for cracks. This AD requires revising the ALS of the existing EMM to incorporate a visual inspection of the centrifugal compressor case. The FAA is issuing this AD to address the unsafe condition on these products.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2022/06/27/2022-13503/airworthiness-directives-ge-aviation-czech-sro-type-certificate-previously-held-by-walter-engines-as)
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