AD 91-23-13
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | General Electric Company | CF6-50A | GENERAL ELECTRIC COMPANY Models CF6-50 and CF6-80A Series Engines |
| engine | General Electric Company | CF6-50C | GENERAL ELECTRIC COMPANY Models CF6-50 and CF6-80A Series Engines |
| engine | General Electric Company | CF6-50C1 | GENERAL ELECTRIC COMPANY Models CF6-50 and CF6-80A Series Engines |
| engine | General Electric Company | CF6-50C2 | GENERAL ELECTRIC COMPANY Models CF6-50 and CF6-80A Series Engines |
| engine | General Electric Company | CF6-50C2B | GENERAL ELECTRIC COMPANY Models CF6-50 and CF6-80A Series Engines |
| engine | General Electric Company | CF6-50C2D | GENERAL ELECTRIC COMPANY Models CF6-50 and CF6-80A Series Engines |
| engine | General Electric Company | CF6-50CA | GENERAL ELECTRIC COMPANY Models CF6-50 and CF6-80A Series Engines |
| engine | General Electric Company | CF6-50E | GENERAL ELECTRIC COMPANY Models CF6-50 and CF6-80A Series Engines |
| engine | General Electric Company | CF6-50E1 | GENERAL ELECTRIC COMPANY Models CF6-50 and CF6-80A Series Engines |
| engine | General Electric Company | CF6-50E2 | GENERAL ELECTRIC COMPANY Models CF6-50 and CF6-80A Series Engines |
Unsafe Condition
Uncontained engine failure and damage to the aircraft due to the use of specific stage 1 fan disks with identified part numbers and serial numbers.
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Required Actions
Remove from service stage 1 fan disks with specified part numbers and serial numbers within 30 days after the effective date. Replace with a serviceable part before returning engines to service. Ferrying is allowed under FAR 21.197 and 21.199.
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Compliance Time
Within 30 days after the effective date of this AD
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Affected Aircraft
General Electric Company CF6-50 series and CF6-80A series turbofan engines installed on Airbus A300 and A310, Boeing 747 and 767, and McDonnell Douglas DC10-15 and DC10-30 aircraft.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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