Airworthiness directives › 2012-01-10
AD 2012-01-10 Airworthiness Directives; General Electric Company Turbofan Engines
Applicability*9
This AD applies to General Electric Company (GE) CF34-10E series turbofan engines, serial number (S/N) 994116, and S/Ns 994118 through 994187, inclusive.
Compliance
Visually inspect the seating surface of the CVD support ring for wear. (1) If there is sign of wear on the CVD support ring, remove the CVD support assembly and the fan drive shaft from service before further flight. (2) If there is no sign of wear on the CVD support ring, remove the CVD support assembly from service and borescope inspect the inside diameter of the fan drive shaft at the CVD support ring contact area for wear. (3) If there is sign of wear on the inside diameter of the fan drive shaft, remove the fan drive shaft from service before further flight.
Required actions
After the effective date of this AD, do not return to service any CVD support assembly (consisting of self-locking nut, P/N 2226M57G03, threaded sleeve, P/N 2226M55P03, and support ring, P/N 2226M56P01) or fan drive shaft removed from service as specified in this AD.
Unsafe condition
Comply with this AD before accumulating 11,500 total cycles-in-service on the engine, unless already done.
Affected ADs
None.
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