General Electric says flight test progress on the GEnx-1B-powered Boeing 787 gives it confidence that combined ETOPS and functional and reliability (F&R) evaluations will start in mid-July. The two GEnx-1B test aircraft, ZA005 and ZA006, have amassed some 1,560 engine flight hours and 1,150 engine flight cycles between them. Boeing, which counts entire flights rather than flight cycles, such as touch and go circuits, says the GE aircraft have made almost 280 flights and built up more ...

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