SEATTLE Boeing s 787 battery test airplane went up for its second flight on Monday.
Co-pilots Captain MikeBryan and Captain Randy Neville reported an uneventful test flight.
Eleven flight test personel completed the first round of battery monitoring tests on the hour and a half flight.
The plane, also known as ZA005, went up on Saturday for a 2 hour and 21 minute flight that wound over unpopulated areas of eastern Washington and the Olympic Peninsula.
The FAA approved test flights last week.
Boeing says it s making the flights to figure out what could have caused two 787 batteries to fail last month. One caught fire after landing in Boston on January 7, and anoter smoked aboard a domestic flight in Japan on January 16.
The incidents prompted the grounding of the world wide fleet of 50 Dreamliner jets.