The manufacturer and customers are playing down the impact—on already delayed deliveries of the new Bombardier CSeries airliner—of the failure of a Pratt & Whitney geared turbofan engine during ground testing on the narrowbody. Pratt has made a preliminary determination of the root cause of the PW1500G failure and is working with Bombardier “on a plan to resume testing in the next few weeks,” says Greg Hayes, chief financial officer of parent company United ...


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