Buoyed by promising performance results from runs of the first GE9X development turbofan, GE  Aviation has started assembly of the initial test engine for the certification program. Manufacture of the first production-configured powerplant for Boeing’s 777X flagship twinjet aircraft also comes as GE completes key endurance tests in a GEnx-1B donor engine of lightweight, heat-resistant ceramic matrix composites (CMC), which are pivotal to achieving the performance design goals of ...

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