AD 66-04-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | General Electric Company | CJ805-23 | GENERAL ELECTRIC Models CJ805-3, -3A, -3B, -23, -23B, and -23C Engines |
| engine | General Electric Company | CJ805-23B | GENERAL ELECTRIC Models CJ805-3, -3A, -3B, -23, -23B, and -23C Engines |
| engine | General Electric Company | CJ805-23C | GENERAL ELECTRIC Models CJ805-3, -3A, -3B, -23, -23B, and -23C Engines |
| engine | General Electric Company | CJ805-3 | GENERAL ELECTRIC Models CJ805-3, -3A, -3B, -23, -23B, and -23C Engines |
| engine | General Electric Company | CJ805-3A | GENERAL ELECTRIC Models CJ805-3, -3A, -3B, -23, -23B, and -23C Engines |
| engine | General Electric Company | CJ805-3B | GENERAL ELECTRIC Models CJ805-3, -3A, -3B, -23, -23B, and -23C Engines |
Unsafe Condition
Failure of the thrust reverser due to second stage turbine discs with insufficient cycle life remaining.
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Required Actions
Remove from service second stage turbine discs with less than 7,000 cycles on the effective date before accumulating 7,200 cycles. Remove from service discs with 7,000 or more cycles within the next 200 cycles. Disc life may be extended to 10,000 cycles if meeting criteria in GE Service Bulletin 880-72-263 or 990-72-272.
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Compliance Time
Effective February 7, 1968.
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Affected Aircraft
General Electric Models CJ805-3, -3A, -3B, -23, -23B, and -23C Turbojet Engines.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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