Airworthiness Directives; CFM International, S.A. Engines
The comment period closed Oct 29, 2026.
The FAA proposes to adopt a new airworthiness directive (AD) for certain CFM International, S.A. (CFM) Model CFM56-5B, CFM56-5C, and CFM56-7B engines with a certain high-pressure turbine (HPT) inner stationary seal installed. This proposed AD was prompted by multiple reports of honeycomb separation from the surface of HPT inner stationary seals. This proposed AD would require initial and repetitiv
Summary from the Federal Register.
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Full history
- Sep 14, 2026
Rule published
RIN 2120-AA64
Transportation Department
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