Redesigns and retrofits required to address a faulty integrated fuel system for the tanker appear to be the cause of the latest cost overrun for Boeing to keep the U.S. Air Force’s KC-46 aerial refueling program on track. This newest, $835 million pre-tax charge sheds light on overly optimistic planning by the company for FAA certification and problems ensuring parts meet design specifications. It is unclear if the preponderance of the parts are from suppliers, but likely some are. ...


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