Following a second significant incident involving a Boeing 787 Dreamliner, investigators are focusing on the lithium-ion batteries used in the new airplanes.
"The battery was always going to be a focus of the investigation into what's happening with the Dreamliner," says Hans Weber, aviation consultant with Tecop International Inc. "This incident is only going to reinforce that."
Smoke in the Cockpit, Strange Smell in the Cabin
On Wednesday, an All Nippon Airways flight in Japan made an emergency landing after battery warning lights went off in the cockpit. According to the National Transportation Safety Board, the ANA crew "reported smoke in the cockpit and an odor in the cabin. The airplane subsequently landed, and passengers and crew evacuated via emergency slides."
(Read More: Japan: The Test Case for Boeing's Dreamliner Woes?)