AD Amdt-39-11440
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | General Electric | Company CF6 Series | Airworthiness Directives; General Electric Company CF6 Series Turbofan Engines |
Unsafe Condition
Cracking in high pressure compressor rotor (HPCR) stage 3-9 spools, which can lead to spool separation and uncontained engine failure.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect HPCR stage 3-9 spools for cracks using ultrasonic and eddy current methods, with more aggressive inspection intervals for certain spools. Add CF6-80E1 engines to the inspection program. Inspect spools manufactured from 8-inch diameter billet forgings. Perform one-time inspections of stage 3-5 blade slot bottoms and web and hub-to-web transition areas.
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Compliance Time
Within 60 days of the effective date (January 28, 2000).
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Affected Aircraft
General Electric Company CF6-45, -50, -80A, -80C2, and -80E1 series turbofan engines.
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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