Aircraft
Source of 787 Battery Failures Remains Elusive
National Transportation Safety Board chairman Deborah Hersman presides over the investigative hearing into the 787 battery design and certification. (Photo: Bill Carey)
National Transportation Safety Board chairman Deborah Hersman presides over the investigative hearing into the 787 battery design and certification. (Photo: Bill Carey)

As Ethiopian Airlines and other Boeing 787 customers prepared to return their Dreamliners to service with battery system modification kits, the U.S. National Transportation Safety Board (NTSB) conducted an exhaustive, two-day investigative hearing into the design and certification of the lithium-ion batteries implicated in the airplane’s grounding. Sixteen witnesses testified and answered questions during the hearing on April 23 and 24 at the Board’s Washington, D.C., headquarters.

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