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Boeing 787 Dreamliner grounded in Japan inspected by US officials


The new Boeing Dreamliner 787 sits on the tarmac at Manchester Airport during it's tour of the world on April 24, 2012 in Manchester, England.


Christoper Furlong

The Boeing 787 Dreamliner that was grounded last week after a warning light went off on a Japan Airlines-operated plane has undergone an initial inspection by US experts, who arrived in Tokyo Friday morning.

The newest plane from Boeing has had a host of problems since its launch, ultimately causing regulators around the world to ground the 50 Dreamliners currently in service, Al Jazeera English reported

The panel of Federal Aviation Administration and US National Transportation Safety Board officials as well as experts from Boeing visiting Tokyo have said that the aircraft would undergo further inspections in Japan, which could take as long as a week, Reuters reported

The initial inspection, which is being led by the Japan Transport Safety Board, found potential problems with battery overheating, according to Reuters. Investigators released photos showing a burnt blue lithium-ion battery with visible liquid seepage.

The Dreamliner is the first Boeing plane to use rechargeable lithium-ion batteries for its central electric system, reported.  

"The impact of this incident on the aviation industry is great. That's why we feel the importance of swiftly producing a comprehensive report, free from bias," Hideyo Kosugi, a JTSB inspector, told reporters Friday. "We hope to produce a report as soon as possible ... within a week."

Meanwhile, Japan Airlines is losing roughly $1.1 million for each day their plane remains grounded, according to calculations by Mizuho Securities, Al Jazeera English reported. 

More from GlobalPost: What's wrong with the Boeing Dreamliner?