AD 2000-20-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | General Electric | Company CF6-50 Series | Airworthiness Directives; General Electric Company CF6-50 Series Turbofan Engines |
Unsafe Condition
Loose or missing low pressure turbine (LPT) nozzle lock assembly studs could lead to failure of the locks and subsequent uncontained failure of the engine.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the stage 2 LPT nozzle lock assemblies for loose or missing studs. Replace all stage 2 LPT lock assemblies with new ones if a loose or missing stud is found. Install borescope plug P/N 2083M99P01. Inspect the area surrounding the borescope plug for buckling or cracks. Replace the LPT stator case assembly with a serviceable part if buckling or cracks are found.
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Compliance Time
Within 500 hours time-in-service (TIS) or 60 days after the effective date of this AD, depending on the time-since-new (TSN) of the lock assembly.
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Affected Aircraft
General Electric Company CF6-50 series turbofan engines installed on, but not limited to, Airbus Industries A300, Boeing Airplane Company 747, and McDonnell Douglas Corporation DC10 airplanes.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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