Airworthiness Directive · Amendment 39-10496 · General Electric Company Model GE90-76B Turbofan Engines
General Electric Company Model GE90-76B Turbofan Engines
General Electric Company (GE) GE90-76B Model turbofan engines, installed on but not limited to Boeing 777 series aircraft.
This amendment adopts a new airworthiness directive (AD), applicable to General Electric Company (GE) Model GE90-76B turbofan engines, that requires reduced life limits for certain rotating components. This amendment is prompted by the results of a refined life analysis performed by the manufacturer which revealed minimum calculated low cycle fatigue lives lower than the published low cycle fatigue retirement lives for certain rotating components. The actions specified by this AD are intended to prevent a low cycle fatigue failure of a rotating component and possibly an uncontained engine failure.
