AD 91-15-25
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | General Electric Company | CF6-80A | GENERAL ELECTRIC COMPANY (GE) Models GE CF6-80A series and CF6-80C2 series engines |
| engine | General Electric Company | CF6-80A1 | GENERAL ELECTRIC COMPANY (GE) Models GE CF6-80A series and CF6-80C2 series engines |
| engine | General Electric Company | CF6-80A2 | GENERAL ELECTRIC COMPANY (GE) Models GE CF6-80A series and CF6-80C2 series engines |
| engine | General Electric Company | CF6-80A3 | GENERAL ELECTRIC COMPANY (GE) Models GE CF6-80A series and CF6-80C2 series engines |
| engine | General Electric Company | CF6-80C2A1 | GENERAL ELECTRIC COMPANY (GE) Models GE CF6-80A series and CF6-80C2 series engines |
| engine | General Electric Company | CF6-80C2A2 | GENERAL ELECTRIC COMPANY (GE) Models GE CF6-80A series and CF6-80C2 series engines |
| engine | General Electric Company | CF6-80C2A3 | GENERAL ELECTRIC COMPANY (GE) Models GE CF6-80A series and CF6-80C2 series engines |
| engine | General Electric Company | CF6-80C2A5 | GENERAL ELECTRIC COMPANY (GE) Models GE CF6-80A series and CF6-80C2 series engines |
| engine | General Electric Company | CF6-80C2A8 | GENERAL ELECTRIC COMPANY (GE) Models GE CF6-80A series and CF6-80C2 series engines |
| engine | General Electric Company | CF6-80C2B1 | GENERAL ELECTRIC COMPANY (GE) Models GE CF6-80A series and CF6-80C2 series engines |
Unsafe Condition
Vane to spool rub damage on high pressure compressor rotor (HPCR) stages 11-14 spool-shafts could cause an uncontained engine failure.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect HPCR stages 11-14 spool-shafts for vane to spool rubs using specified service bulletins. Remove from service spool-shafts with rub damage within 500 cycles in service after the AD effective date or prior to 8,000 cycles since new, whichever is later.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within 500 cycles in service (CIS) after the effective date of this AD, or prior to accumulating 8000 cycles since new, whichever occurs later
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
GE CF6-80A series (S/N 580-101 through 580-319, 585-101 through 585-222) and CF6-80C2 series engines (S/N 690-101 through 690-181, 695-101 through 695-150, 705-101 through 705-112) with specified part numbers installed on Airbus A300, A310, Boeing 747, and 767 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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