The flight was Boeing's final certification test for the battery system it redesigned following smoke and fire incidents in January. Boeing Co. said the test would show the Federal Aviation Administration that the new system performs as intended "during normal and non-normal flight conditions."
The Boeing Dreamliner was been grounded since Jan. 16 as authorities try to sort out problems with the plane’s high tech batteries and electrical system. Meanwhile, it was 70 years ago this coming week that an earlier Boeing plane caught fire over Seattle during a test flight, causing one of the worst air disasters in the city’s history.
The Boeing 787’s lithium-ion batteries are now the subject of intense scrutiny. The Federal Aviation Administration has grounded the entire 787 fleet in the US until it can get to the root cause of a fire hazard involving the batteries.