ROBERT SIEGEL, HOST:
Boeing's flagship jetliner, the 787, has been stuck on the ground lately. The FAA and safety authorities around the world grounded the fleet after battery problems. And today we have an update on the investigation of the battery fire onboard a Japan Airlines 787 this month in Boston.
NPR's Wendy Kaufman has been following this story and joins us now for an update. And, Wendy, what did the National Transportation Safety Board have to say today?