AD 78-07-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | General Electric Company | CF700-2C | GENERAL ELECTRIC COMPANY Model CJ610-5, -6, CF700-2C, -2D, and -2D-2 Engines |
| engine | General Electric Company | CF700-2D | GENERAL ELECTRIC COMPANY Model CJ610-5, -6, CF700-2C, -2D, and -2D-2 Engines |
| engine | General Electric Company | CF700-2D-2 | GENERAL ELECTRIC COMPANY Model CJ610-5, -6, CF700-2C, -2D, and -2D-2 Engines |
| engine | General Electric Company | CJ610-5 | GENERAL ELECTRIC COMPANY Model CJ610-5, -6, CF700-2C, -2D, and -2D-2 Engines |
| engine | General Electric Company | CJ610-6 | GENERAL ELECTRIC COMPANY Model CJ610-5, -6, CF700-2C, -2D, and -2D-2 Engines |
Unsafe Condition
Low cycle fatigue failure of compressor disks suspected to have improper material.
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Required Actions
Remove from service and replace sixth and seventh stage compressor disks with specified part numbers and serial numbers. Inspect first stage compressor disks with specified part numbers and serial numbers for material properties per GE service bulletins. Replace unsatisfactory disks with serviceable ones and forward removed disks to GE for evaluation.
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Compliance Time
prior to further flight
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Affected Aircraft
General Electric Company CJ610-5, CJ610-6, CF700-2C, CF700-2D, and CF700-2D-2 engines with compressor disks having the listed serial numbers.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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