Data / Federal rules / 2025-19555
Airworthiness Directives; Continental Aerospace Technologies GmbH Engines
The Federal Aviation Administration published this final rule in the Federal Register on October 15, 2025. It took effect on October 30, 2025. Comments closed on December 1, 2025.
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What the agency says
The FAA is adopting a new airworthiness directive (AD) for all Continental Aerospace Technologies GmbH (Continental) Model TAE 125-02- 125 engines. This AD was prompted by multiple reports of cracks in the cylinder heads, which can cause engine coolant to leak into the combustion chamber. This AD requires a one-time inspection of the engine coolant for contamination and, depending on the inspection results, replacement of the coolant and replacement of the cylinder heads. This AD also prohibits installing a cylinder head on any engine unless it is a serviceable part. The FAA is issuing this AD to address the unsafe condition on these products.
Key facts
- Document number
- 2025-19555
- Type
- Final rule
- Action
- Final rule; request for comments
- Agency
- Transportation Department; Federal Aviation Administration
- Published
- October 15, 2025
- Takes effect
- October 30, 2025
- Comments due
- December 1, 2025
- Dates
- This AD is effective October 30, 2025.
- Docket
- Docket No. FAA-2025-3432; Project Identifier MCAI-2024-00743-E; Amendment 39-23171; AD 2025-20-18
- Regulation ID (RIN)
- 2120-AA64
- Code of Federal Regulations
- 14 CFR 39
- Topics
- Air transportation; Aircraft; Aviation safety; Incorporation by reference; Safety
- Pages
- 4
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Everything from the Federal Aviation Administration · Rules on air transportation · Rules on aircraft · Rules on aviation safety · Published in October 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.