In an unusual twist, Boeing (BA) is stepping up criticism of the NTSB's characterization of...

|About: The Boeing Company (BA)|By:, SA News Editor

In an unusual twist, Boeing (BA) is stepping up criticism of the NTSB's characterization of battery-fire dangers aboard the 787. Last month NTSB Chairman Deborah Hersman said the incidents with the 787's lithium-ion batteries posed "unprecedented" safety concerns, ending in a so-called thermal runaway. But for the second day in a row, a high-ranking BA executive disputed the NTSB's description, saying it didn't fit the aircraft builder's view or industry-wide definitions of a thermal runaway, which entails "extensive heat and an uncontrolled fire of the battery that basically consumes the entire battery."