U.S. air safety board urges more battery tests for Boeing 787

By Alwyn Scott SEATTLE (Reuters) – The U.S. agency that investigates air crashes on Thursday called for lithium-ion batteries on Boeing's 787 Dreamliners to undergo more testing to ensure they are safe. The National Transportation Safety Board urged the Federal Aviation Administration to develop better tests for the uncontrolled overheating that led to a battery fire on a Dreamliner in 2013, require the tests for future aircraft designs and check whether 787s and other planes that have the batteries need more testing. The NTSB stopped short of calling lithium-ion batteries or planes flying with them unsafe. The NTSB has not yet determined a root cause for the 787 fire in Boston in January 2013.