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Japan Airlines jet leaks fuel in Boston

As a commuter plane lifts off, a Japan Airlines 787 is towed away from the runways at Logan Airport in Boston, Tuesday, Jan. 8, 2013. Officials say crews have contained a fuel leak from the outbound Japan Airlines flight to Tokyo in the second incident involving the airline at Logan in two days. (AP Photo/Charles Krupa)

BOSTON (AP) -- Officials at Boston's Logan International Airport say crews have contained a fuel leak from an outbound Japan Airlines flight to Tokyo, marking the second time in two days that JAL planes at Logan reported problems.

Massachusetts Port Authority spokesman Richard Walsh said the Boeing 787 was towed back to the gate Tuesday after about 40 gallons of fuel spilled. He said the plane had 178 passengers and 11 crew members on board. Walsh said the plane was evaluated and departed that afternoon.

A JAL spokeswoman said the crew had reported a "mechanical issue."

On Monday, a fire broke out in a battery pack in the belly of a different Japan Airlines Boeing 787, filling the cabin with smoke minutes after passengers disembarked. Federal transportation agencies are investigating the fire.