# Proposed AD FAA-2022-0459: GE Aviation Czech s.r.o. (Type Certificate Previously Held by WALTER Engines a.s., Walter a.s., and MOTORLET a.s.) Turboprop Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2022-13-16
- Products: GE Aviation Czech s.r.o.
- Product type: Engine
- Action: Notice of proposed rulemaking (NPRM).
- Published: April 14, 2022, 87 FR 22149
- Comments due: May 31, 2022
- Became: [AD 2022-13-16](https://openairdocs.org/ad/2022-13-16)
- Docket: FAA-2022-0459 (https://www.regulations.gov/docket/FAA-2022-0459, where comments are filed)
- Project: MCAI-2021-00266-E
- FR document: 2022-08005
- Official PDF: https://openairdocs.org/files/sha256/a8/5c/a85c6ea6e2f64c7b411597d0455211520383c98541aa54e3b42cf213109c7e56 (from https://www.govinfo.gov/content/pkg/FR-2022-04-14/pdf/2022-08005.pdf)
- Federal Register: https://www.federalregister.gov/documents/2022/04/14/2022-08005/airworthiness-directives-ge-aviation-czech-sro-type-certificate-previously-held-by-walter-engines-as
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FR-ADNPRM-2022-08005-00000000000.0001
- Page: https://openairdocs.org/proposed/FAA-2022-0459

## Summary

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

## Notices in this docket

- Apr 14, 2022: Notice of proposed rulemaking (NPRM). (first notice), FR document 2022-08005, comments due May 31, 2022 (https://www.federalregister.gov/documents/2022/04/14/2022-08005/airworthiness-directives-ge-aviation-czech-sro-type-certificate-previously-held-by-walter-engines-as)

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