AD 94-07-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | General Electric Company | CF6-80A | Airworthiness Directives; General Electric Company CF6 Series Turbofan Engines |
| engine | General Electric Company | CF6-80A1 | Airworthiness Directives; General Electric Company CF6 Series Turbofan Engines |
| engine | General Electric Company | CF6-80A2 | Airworthiness Directives; General Electric Company CF6 Series Turbofan Engines |
| engine | General Electric Company | CF6-80A3 | Airworthiness Directives; General Electric Company CF6 Series Turbofan Engines |
Unsafe Condition
An uncontained stage 1 high pressure turbine (HPT) disk failure due to cracks in the stage 1 HPT disk rim bolt holes, which could result in an inflight engine shutdown, rejected takeoff, or damage to the aircraft.
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Required Actions
Eddy current inspect (ECI) stage 1 HPT disk rim bolt holes in accordance with GE CF6-80A SB No. 72-604, Revision 3, dated April 8, 1993. Remove and replace cracked disks, and inspect replacements if applicable. Compliance must follow specific cycle thresholds and shop visit requirements outlined in the service bulletin.
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Compliance Time
Compliance required as indicated, with inspections due at next engine shop visit after specific cycle thresholds (e.g., 3,000 cycles since new) or by July 20, 1994, depending on current cycles at AD effective date (May 23, 1994).
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Affected Aircraft
General Electric Company CF6-80A series turbofan engines (models CF6-80A, CF6-80A1, CF6-80A2, CF6-80A3) installed on Boeing 767 and Airbus A310 series aircraft.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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