AD 73-23-05
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | General Electric Company | CF700-2C | GENERAL ELECTRIC Models CJ610-1, -4, -5, -6 and J85-GE-17B, and CF700-2C Engines |
| engine | General Electric Company | CJ610-1 | GENERAL ELECTRIC Models CJ610-1, -4, -5, -6 and J85-GE-17B, and CF700-2C Engines |
| engine | General Electric Company | CJ610-4 | GENERAL ELECTRIC Models CJ610-1, -4, -5, -6 and J85-GE-17B, and CF700-2C Engines |
| engine | General Electric Company | CJ610-5 | GENERAL ELECTRIC Models CJ610-1, -4, -5, -6 and J85-GE-17B, and CF700-2C Engines |
| engine | General Electric Company | CJ610-6 | GENERAL ELECTRIC Models CJ610-1, -4, -5, -6 and J85-GE-17B, and CF700-2C Engines |
Unsafe Condition
First stage turbine discs may develop cracks and insufficient rabbet radius, which could result in turbine disc failure.
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Required Actions
Inspect first stage turbine discs (P/N 634E583P4, P/N 634E583P4Y, Wheel Assembly P/N 841B690P6) for cracks and minimum rabbet radii. Remove discs from service based on total cycles and cycles since last inspection. Replace discs with insufficient radii or cracks. Inspect second stage turbine discs (P/N 646C596P1) for cracks and forward rabbet radius per specified schedules.
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Compliance Time
Compliance required as indicated in the AD's inspection and removal schedules based on total cycles and cycles since last inspection.
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Affected Aircraft
General Electric Models CJ610-1, -4, -5, -6, J85-GE-17B, and CF700-2C engines.
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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