# Proposed AD FAA-2024-2547: General Electric Company Engines

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2025-05-15
- Products: General Electric
- Product type: Engine
- Action: Notice of proposed rulemaking (NPRM).
- Published: December 5, 2024, 89 FR 96618
- Comments due: January 21, 2025
- Became: [AD 2025-05-15](https://openairdocs.org/ad/2025-05-15)
- Docket: FAA-2024-2547 (https://www.regulations.gov/docket/FAA-2024-2547, where comments are filed)
- Project: AD-2024-00334-E
- FR document: 2024-28436
- Official PDF: https://openairdocs.org/files/sha256/02/e3/02e373ffea64730d74614f7971cae83fcd7227fb41cd5e87042c301c3e141538 (from https://www.govinfo.gov/content/pkg/FR-2024-12-05/pdf/2024-28436.pdf)
- Federal Register: https://www.federalregister.gov/documents/2024/12/05/2024-28436/airworthiness-directives-general-electric-company-engines
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FR-ADNPRM-2024-28436-00000000000.0001
- Page: https://openairdocs.org/proposed/FAA-2024-2547

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for all General Electric Company (GE) Model CT7-2E1 engines. This proposed AD was prompted by a revised analysis using an updated stress model, which calculated that the actual life limit of the CT7-2E1 stage 2 turbine aft cooling plate is less than the current life limit. This proposed AD would require revision of the airworthiness limitations section (ALS) of the existing CT7-2E1 engine maintenance manual (EMM) and the operator's existing approved maintenance program or inspection program, as applicable, to incorporate a reduced life limit for this part. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Dec 5, 2024: Notice of proposed rulemaking (NPRM). (first notice), FR document 2024-28436, comments due Jan 21, 2025 (https://www.federalregister.gov/documents/2024/12/05/2024-28436/airworthiness-directives-general-electric-company-engines)

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