Boeing is preparing to install a modified battery system for flight tests in a 787 in anticipation of the FAA approving its redesign plan, which the manufacturer hopes could come by March 6. At the same time, the airframer is steeling itself for a lengthy test and qualification period, with regulators already emphasizing the need for extensive trials. Testing and certification of the battery fix now may mean the first 787 does not return to service until late April or May. ...


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