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Boeing 787 Dreamliner's failed battery was wired incorrectly, Japan says Boeing 787 Dreamliner's failed battery was wired incorrectly, Japan says
(7 months later)
The lithium-ion battery in an All Nippon Airways Boeing 787 Dreamliner was improperly wired, Japan's transport ministry said Wednesday.The lithium-ion battery in an All Nippon Airways Boeing 787 Dreamliner was improperly wired, Japan's transport ministry said Wednesday.
The news was a welcome development for Boeing which was forced to ground its Dreamliner fleet last month after two incidents involving the controversial batteries.The news was a welcome development for Boeing which was forced to ground its Dreamliner fleet last month after two incidents involving the controversial batteries.
Japan's transport safety board said in a report that the battery for the aircraft's auxiliary power unit was incorrectly connected to the main battery that overheated.Japan's transport safety board said in a report that the battery for the aircraft's auxiliary power unit was incorrectly connected to the main battery that overheated.
According to Reuters Boeing sources claim to have a fix to their battery problems that involves increasing the space between the lithium-ion battery cells.According to Reuters Boeing sources claim to have a fix to their battery problems that involves increasing the space between the lithium-ion battery cells.
"The gaps between cells will be bigger. I think that's why there was overheating," the source, who declined to be identified because the plans are private, told Reuters."The gaps between cells will be bigger. I think that's why there was overheating," the source, who declined to be identified because the plans are private, told Reuters.
In the US the National Transportation Safety Board (NTSB) is currently investigating what went wrong with a second battery that caught fire in a parked 787 in Boston.In the US the National Transportation Safety Board (NTSB) is currently investigating what went wrong with a second battery that caught fire in a parked 787 in Boston.
According to the NTSB's last update that fire was caused by the failure of a single cell in the battery which started multiple short circuits, triggering an uncontrolled chemical reaction, known as a "thermal runaway".According to the NTSB's last update that fire was caused by the failure of a single cell in the battery which started multiple short circuits, triggering an uncontrolled chemical reaction, known as a "thermal runaway".
Boeing will have to satisfy the Federal Aviation Administration (FAA) that its fix will prevent future issues before the Dreamliner can fly commercially again. Boeing is expected to present its fix to the FAA later this week. If approved it would begin testing the new design immediately with the hope of getting the 787 back off the ground as early as next month.Boeing will have to satisfy the Federal Aviation Administration (FAA) that its fix will prevent future issues before the Dreamliner can fly commercially again. Boeing is expected to present its fix to the FAA later this week. If approved it would begin testing the new design immediately with the hope of getting the 787 back off the ground as early as next month.
On Wednesday Air India became the latest airline to say Boeing had told it it is hopeful of getting the Dreamliner back in service soon. But previous reports of Boeing's confidence proved premature, coming ahead of a damning update from the NTSB that criticised the certification of the batteries.On Wednesday Air India became the latest airline to say Boeing had told it it is hopeful of getting the Dreamliner back in service soon. But previous reports of Boeing's confidence proved premature, coming ahead of a damning update from the NTSB that criticised the certification of the batteries.
Lithium-ion batteries have caused fires in cars, computers, mobiles and other devices. Airbus recently scrapped plans to use the power source in its A350 passenger jet.Lithium-ion batteries have caused fires in cars, computers, mobiles and other devices. Airbus recently scrapped plans to use the power source in its A350 passenger jet.
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