AD 2005-26-06
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
Reports of fan mid shaft separation leading to separation of the low pressure turbine (LPT) stage 1 disk, disk overspeed, and uncontained engine failure.
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Required Actions
Remove pre-GE Service Bulletin (SB) No. CF6-50 S/B 72-1268 configuration LPT stage 2 and stage 3 interstage seal assemblies. Install new or reworked configuration stage 2 and stage 3 interstage seal assemblies.
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Compliance Time
At the next disassembly of the LPT stage 2 and stage 3 interstage seal assemblies after the effective date, but no later than December 31, 2010.
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Affected Aircraft
General Electric Company CF6-45A, CF6-50A, CF6-50C, and CF6-50E series turbofan engines installed on, but not limited to, Boeing DC10 and 747 series airplanes, and Airbus Industrie A300 series airplanes.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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