AD 2022-08-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | General Electric | Company | Airworthiness Directives; General Electric Company Turbofan Engines |
Unsafe Condition
Corrosion of the variable geometry (VG) system actuator, which can cause the full authority digital engine control (FADEC) software to command and lock the engine at idle until it is restarted.
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Required Actions
Performing a rotational torque check on the actuating linkage assembly and, depending on the results of the rotational torque check, replacement of the compressor inlet guide vane (IGV) outer shroud bushing and vane spindle bushing with parts eligible for installation. Reporting the results of the rotational torque check to GE.
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Compliance Time
Within 50 flight hours or 35 calendar days after the effective date of this AD for engines installed on airplanes that were parked outdoors within 50 miles of a saltwater coastline. Within 200 flight hours or 35 calendar days after the effective date of this AD for engines installed on airplanes that were parked outdoors within 10 miles of a saltwater coastline. Before exceeding 880 flight hours for all other affected engines installed on airplanes that were parked outdoors.
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Affected Aircraft
General Electric Company, CF34-8C and CF34-8E model turbofan engines.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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