Japan Airlines explains Dreamliner fuel leak

Boeing 787 Dreamliner arrives from Boston at Narita airport in Japan on Jan. 9, 2013, after a fuel leak at Logan International Airport caused a delay. / Kyodo/AP
BOSTON Japan Airlines is giving more details about a fuel leak on one of its Boeing (BA) 787s that delayed a flight from Boston to Tokyo.
A spokeswoman said Wednesday one of four valves connecting the center and left main fuel tanks was open. That led to fuel flowing between those tanks to a surge tank near the wing tip and then out a vent, spilling about 40 gallons.
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She says that valve was deactivated and the flight was cleared to depart later Tuesday. A more detailed inspection was scheduled in Tokyo.
The leak Tuesday was the second problem in two days for Japan Airlines at Boston Logan. A fire broke out in a battery pack in the belly of a different Boeing 787 on Monday, after passengers had exited.
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