FAA head - No answers yet, no timetable on Boeing 787 review

WASHINGTON Wed Jan 23, 2013 2:14pm EST

WASHINGTON Jan 23 (Reuters) - The U.S. Federal Aviation Administration does not know yet what caused battery problems on Boeing Co's 787 Dreamliner and cannot speculate when a comprehensive review of the plane will end, FAA Administrator Michael Huerta said on Wednesday.

The FAA and other regulators grounded the 787 last week after a series of incidents, including one battery-related event that required an emergency landing.