# Proposed AD FAA-2023-1811: GE Aviation Czech s.r.o. (Type Certificate Previously Held by WALTER Engines a.s., Walter a.s., and MOTORLET a.s.) Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2024-01-03
- Products: GE Aviation Czech s.r.o.
- Product type: Engine
- Action: Notice of proposed rulemaking (NPRM).
- Published: September 6, 2023, 88 FR 60896
- Comments due: October 23, 2023
- Became: [AD 2024-01-03](https://openairdocs.org/ad/2024-01-03)
- Docket: FAA-2023-1811 (https://www.regulations.gov/docket/FAA-2023-1811, where comments are filed)
- Project: MCAI-2023-00146-E
- FR document: 2023-18930
- Official PDF: https://openairdocs.org/files/sha256/f4/2f/f42f305b04b3aadc01ae2f95a84ee3ce8fddd49ddfd693a50b09dc0c3c0f1be4 (from https://www.govinfo.gov/content/pkg/FR-2023-09-06/pdf/2023-18930.pdf)
- Federal Register: https://www.federalregister.gov/documents/2023/09/06/2023-18930/airworthiness-directives-ge-aviation-czech-sro-type-certificate-previously-held-by-walter-engines-as
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FR-ADNPRM-2023-18930-00000000000.0001
- Page: https://openairdocs.org/proposed/FAA-2023-1811

## Summary

The FAA proposes to supersede Airworthiness Directive (AD) 2023-01-07, which applies to all GE Aviation Czech s.r.o. (GEAC) (type certificate previously held by WALTER Engines a.s., Walter a.s., and MOTORLET a.s.) Model H75-100, H75-200, H80, H80-100, H80-200, H85-100, and H85-200 engines. AD 2023-01-07 requires revising the airworthiness limitations section (ALS) of the existing engine maintenance manual (EMM) and the operator's existing approved maintenance or inspection program, as applicable, to incorporate updated coefficients and recalculate the cycles accumulated on critical parts. Since the FAA issued AD 2023-01-07, the manufacturer revised the ALS of the EMM to introduce new and more restrictive airworthiness limitations and associated thresholds and intervals for life-limited parts, which prompted this proposed AD. This proposed AD would require revising the ALS of the existing EMM and the operator's existing approved engine maintenance or inspection program, as applicable, to incorporate new and more restrictive instructions and associated thresholds and intervals for life-limited parts, as specified in a European Union Aviation Safety Agency (EASA) AD, which is proposed for incorporation by reference (IBR). The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Sep 6, 2023: Notice of proposed rulemaking (NPRM). (first notice), FR document 2023-18930, comments due Oct 23, 2023 (https://www.federalregister.gov/documents/2023/09/06/2023-18930/airworthiness-directives-ge-aviation-czech-sro-type-certificate-previously-held-by-walter-engines-as)

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.