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Boeing’s 787 could face a new inquiry

Japanese crew notices gas coming from battery cell

The Federal Aviation Administration and other authorities grounded all 787s for more than three months last year.

Franck Robichon/European Pressphoto Agency/File 2013

The Federal Aviation Administration and other authorities grounded all 787s for more than three months last year.

NEW YORK — Battery problems resurfaced on Boeing’s 787 on Tuesday, after gas was discovered coming out of a battery on a plane parked in Tokyo.

Boeing said the problem on a Japan Airlines 787 was discovered during scheduled maintenance. No passengers were on board. The company said it appears that a single battery cell ‘‘vented,’’ or released gas.

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The incident comes a year after a fire in a lithium-ion battery aboard a Japan Airlines 787 parked at Logan International Airport in Boston. That was followed nine days later by another battery incident that forced an emergency landing in Japan by an All Nippon Airways 787.

Those problems prompted the FAA and other authorities to ground all 787s for more than three months. The planes began flying again after Boeing changed the battery system, adding a tougher box to hold the battery and measures to contain any short-circuit or fire.

Boeing said those changes appear to have worked as designed in Tuesday’s battery incident. It said it’s working with Japan Airlines to get the plane flying again.

Because the incident happened in Japan and involved a Japanese airline, Japanese authorities would take the lead in any investigation. If the Japan Transport Safety Board opens an investigation, the National Transportation Safety Board ‘‘would certainly participate,’’ NTSB spokesman Peter Knudson said. The NTSB said the incident was reported to it as a ‘‘smoke event.’’

The NTSB expects to finish its investigation of the 787 fire in Boston by the end of March, and present findings at a public meeting this fall.

‘‘Anything we can learn about the [latest] battery failure would be helpful’’ to the ongoing investigation, Knudson said.

The Federal Aviation Administration said it is working with Boeing and with the Civil Aviation Bureau of Japan to investigate the latest malfunction.

United Airlines is the only operator of 787s in the United States. ‘‘Our 787s are operating normally, and we haven’t experienced any issues with the batteries,’’ spokeswoman Christen David said.

She declined to say whether United’s 787s were getting extra inspections, beyond the routine maintenance checks the airline gives all its planes.

Boeing shares fell 69 cents, or a half-percent, to close at $140.01.

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