AD 90-12-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | General Electric Company | CF6-45A | GENERAL ELECTRIC COMPANY Model CF6-50/-45 Engines |
| engine | General Electric Company | CF6-45A2 | GENERAL ELECTRIC COMPANY Model CF6-50/-45 Engines |
| engine | General Electric Company | CF6-50A | GENERAL ELECTRIC COMPANY Model CF6-50/-45 Engines |
| engine | General Electric Company | CF6-50C | GENERAL ELECTRIC COMPANY Model CF6-50/-45 Engines |
| engine | General Electric Company | CF6-50C1 | GENERAL ELECTRIC COMPANY Model CF6-50/-45 Engines |
| engine | General Electric Company | CF6-50C2 | GENERAL ELECTRIC COMPANY Model CF6-50/-45 Engines |
| engine | General Electric Company | CF6-50C2B | GENERAL ELECTRIC COMPANY Model CF6-50/-45 Engines |
| engine | General Electric Company | CF6-50C2D | GENERAL ELECTRIC COMPANY Model CF6-50/-45 Engines |
| engine | General Electric Company | CF6-50CA | GENERAL ELECTRIC COMPANY Model CF6-50/-45 Engines |
| engine | General Electric Company | CF6-50E | GENERAL ELECTRIC COMPANY Model CF6-50/-45 Engines |
Unsafe Condition
Uncontained low pressure turbine (LPT) failure due to a fire in the LPT rotor cavity.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Install the center vent tube extension assembly and associated hardware in accordance with GE CF6-50 Series Service Bulletin 72-395, Revision 3, dated June 30, 1989. Aircraft may be ferried in accordance with FAR 21.197 and 21.199 to a base where the AD can be accomplished.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
At the next shop visit after the effective date of this AD, but not later than January 1, 1992, unless already accomplished.
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Affected Aircraft
General Electric Company CF6-50/-45 turbofan engines installed on, but not limited to, McDonnell Douglas DC-10, Airbus A300, and Boeing B747 aircraft.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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