AD 2005-07-05
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | General Electric | Company CF6-45A | Airworthiness Directives; General Electric Company CF6-45A, CF6-50A, CF6-50C, and CF6-50E Series Turbofan Engines |
Unsafe Condition
Separation of a stud from a turbine mid frame (TMF) strut and updated analysis of strut stud failures indicate the potential for contact, rubbing, and wear between the LPT nozzle support and the TMF strut stud sleeve, leading to reduced fatigue life and possible uncontained engine failure.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the stage 1 low pressure turbine (LPT) blades for damage. Replace the LPT module if necessary. Operators may receive credit for inspections performed using GE Alert Service Bulletin No. 72-A1251 or an approved maintenance program before the effective date of the AD.
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Compliance Time
Within 150 cycles-in-service after the effective date of the AD.
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Affected Aircraft
General Electric Company CF6-45A, CF6-50A, CF6-50C, and CF6-50E series turbofan engines that have not incorporated GE Service Bulletin No. CF6-50 S/B 72-1239, Revision 1, dated September 24, 2003, or that have not incorporated paragraph 3.B. of GE SB No. CF6-50 S/B 72-1239, original issue, dated May 29, 2003.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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