Data / Federal rules / 2025-03459
Airworthiness Directives; CFM International, S.A. Engines
The Federal Aviation Administration published this final rule in the Federal Register on March 4, 2025. It took effect on April 8, 2025.
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What the agency says
The FAA is adopting a new airworthiness directive (AD) for certain CFM International, S.A. (CFM) Model LEAP-1A, LEAP-1B, and LEAP- 1C engines. This AD was prompted by a manufacturer investigation that revealed a quality escape for low-pressure turbine (LPT) disks made from forgings with nonconforming grain size. This AD requires removal and replacement of the LPT stage 4 and stage 5 disks. The FAA is issuing this AD to address the unsafe condition on these products.
Key facts
- Document number
- 2025-03459
- Type
- Final rule
- Action
- Final rule
- Agency
- Transportation Department; Federal Aviation Administration
- Published
- March 4, 2025
- Takes effect
- April 8, 2025
- Dates
- This AD is effective April 8, 2025.
- Docket
- Docket No. FAA-2024-2424; Project Identifier AD-2024-00416-E; Amendment 39-22970; AD 2025-04-12
- Regulation ID (RIN)
- 2120-AA64
- Code of Federal Regulations
- 14 CFR 39
- Topics
- Air transportation; Aircraft; Aviation safety; Incorporation by reference; Safety
- Pages
- 3
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Everything from the Federal Aviation Administration · Rules on air transportation · Rules on aircraft · Rules on aviation safety · Published in March 2025
Read from the Federal Register API, last updated 2026-10-23. The document on federalregister.gov is the official record; dates and dockets can change through later corrections. Free to reuse with credit to SpecStream under CC BY 4.0.