Boeing 787 tests more than half done

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Boeing said it has finished more than half of the testing on its proposed battery fix for the 787, with the rest of the ground and flight tests coming in the next several days.

The test results so far have been in line with the testing Boeing did when it was developing the fix, spokesman Marc Birtel said on Wednesday.

Smoldering batteries — including one fire on the ground — prompted air safety authorities to ground the world’s 787s in mid-January. Boeing has developed what it believes is a permanent fix, including more heat insulation and a system for venting battery gases outside of the plane.

The tests under way now are aimed at demonstrating that the fix worked. Ultimately, the Federal Aviation Administration will have to certify the changes before the planes fly again.

Ground testing is continuing at Boeing labs in Seattle. Boeing is giving results to the FAA as they are finished.

Boeing said a 787 test flight on Wednesday was unrelated to testing its battery fix. The flight was a “routine test flight designed to address some of the component reliability projects” it has been working on, the company said. A demonstration flight for the battery fix “will take place in the coming days,” Boeing said.

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