AD 2020-13-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | General Electric | Company | Airworthiness Directives; General Electric Company Turbofan Engines |
Unsafe Condition
The development of a design change by GE to remove the unsafe condition, which is the potential for ice crystals to form on the engine's fan hub stator assembly booster outlet guide vanes (BOGV) and cause engine failure.
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Required Actions
Update EEC software on GEnx-1B and GEnx-2B engines and replace a certain fan hub frame assembly part installed on GEnx-2B engines. Remove the affected fan hub stator assembly BOGV at the next engine shop visit after June 9, 2017, or before further flight, whichever occurs later.
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Compliance Time
Within 120 days after the effective date of this AD
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Affected Aircraft
All General Electric Company (GE) GEnx-1B and GEnx-2B model turbofan engines.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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