AD 2022-21-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | General Electric | Company | Airworthiness Directives; General Electric Company Turbofan Engines |
Unsafe Condition
A crack found on the low-pressure turbine (LPT) stage 5 disk at the forward arm area.
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Required Actions
Remove the affected LPT stage 5 disk and replace with a part eligible for installation. Do not install an affected LPT stage 5 disk with 8,000 cycles since new (CSN) or more into the LPT module of the engine.
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Compliance Time
During the next piece-part exposure after the affected LPT stage 5 disk accumulates 8,000 CSN.
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Affected Aircraft
General Electric Company CF34-8C1, CF34-8C5, CF34-8C5A1, CF34-8C5A2, CF34-8C5A3, CF34-8C5B1, CF34-8E2, CF34-8E2A1, CF34-8E5, CF34-8E5A1, CF34-8E5A2, CF34-8E6, and CF34-8E6A1 model turbofan engines with an installed low-pressure turbine (LPT) stage 5 disk, part number (P/N) 4117T14P02.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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