AD Amdt-39-9192
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | General Electric | Company CF6 Series | Airworthiness Directives; General Electric Company CF6 Series Turbofan Engines |
Unsafe Condition
A low cycle fatigue (LCF) failure of the high pressure turbine rotor (HPTR) stage 2 disks due to minimum calculated LCF lives significantly lower than published retirement lives.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Reduce the low cycle fatigue (LCF) retirement lives for certain HPTR stage 2 disks and implement a drawdown schedule for affected parts with reduced LCF retirement lives.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
General Electric Company CF6-45/-50 series turbofan engines with certain high pressure turbine rotor stage 2 disks affected by the refined life analysis.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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