Data / Federal rules / 2026-01094
Airworthiness Directives; CFM International, S.A. Engines
The Federal Aviation Administration published this final rule in the Federal Register on January 21, 2026. It took effect on February 25, 2026.
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What the agency says
The FAA is superseding Airworthiness Directive (AD) 2018-19-16 for all CFM International, S.A. (CFM) Model LEAP-1A23, -1A24, -1A24E1, -1A26, -1A26E1, -1A26CJ, -1A29, -1A29CJ, -1A30, -1A32, -1A33, -1A33B2, and -1A35A engines with certain full authority digital engine control (FADEC) and prognostic health monitoring (PHM) software installed. AD 2018-19-16 required removing certain FADEC and PHM software and installing versions eligible for installation. Since the FAA issued AD 2018-19-16, the manufacturer has developed a new pressure subsystem (PSS) with a heater element to evaporate potential moisture on the PSS manifold/transducer interface and prevent freezing at low temperature. This AD requires replacing certain FADEC and PHM software with new versions that are eligible for installation, replacing certain harnesses with newly designed harnesses, and replacing the PSS with a newly designed heated PSS. The FAA is issuing this AD to address the unsafe condition on these products.
Key facts
- Document number
- 2026-01094
- Type
- Final rule
- Action
- Final rule
- Agency
- Transportation Department; Federal Aviation Administration
- Published
- January 21, 2026
- Takes effect
- February 25, 2026
- Dates
- This AD is effective February 25, 2026.
- Docket
- Docket No. FAA-2025-1725; Project Identifier AD-2025-00583-E; Amendment 39-23244; AD 2026-02-08
- 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 January 2026
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.