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US widens Dreamliner safety probe after battery finding US widens Dreamliner safety probe after battery finding
(about 1 hour later)
US safety officials have widened their probe into a Japan Airlines-operated Boeing 787 Dreamliner, after deciding that overheating was not the cause of a battery fire. US safety officials have widened their probe into a Japan Airlines-operated Boeing 787 Dreamliner, after deciding that overcharging was not the cause of a battery fire.
The focus is now on the battery charger and the plane's auxiliary power unit.The focus is now on the battery charger and the plane's auxiliary power unit.
Shares of the battery maker GS Yuasa were higher on the news.Shares of the battery maker GS Yuasa were higher on the news.
Last week, regulators grounded all of the Boeing 787 Dreamliners in operation after an All Nippon Airways flight had to make an emergency landing.Last week, regulators grounded all of the Boeing 787 Dreamliners in operation after an All Nippon Airways flight had to make an emergency landing.
The aeroplane landed after a warning light came on in the cockpit, saying there was a problem with one of the 787s batteries.The aeroplane landed after a warning light came on in the cockpit, saying there was a problem with one of the 787s batteries.
Japanese investigators probing the cause of the lithium-ion battery malfunction on the All Nippon Airways flight indicated that an overheated battery may have been the cause. Japanese investigators probing the cause of the lithium-ion battery malfunction on the All Nippon Airways flight indicated that an overcharged battery may have been the cause.
However, the National Transportation Safety Board (NTSB) said overheating was not the case in the Japan Airlines incident on 7 January at Logan International Airport in Boston. However, the National Transportation Safety Board (NTSB) said overcharging was not the case in the Japan Airlines incident on 7 January at Logan International Airport in Boston.
"Examination of the flight recorder data from the JAL B-787 airplane indicates that the APU (auxiliary power unit) battery did not exceed its designed voltage of 32 volts," the NTSB said in a statement on Sunday."Examination of the flight recorder data from the JAL B-787 airplane indicates that the APU (auxiliary power unit) battery did not exceed its designed voltage of 32 volts," the NTSB said in a statement on Sunday.
Last week, the Federal Aviation Administration said both batteries had leaked electrolyte fluid and there had been smoke damage to parts of the aircraft. Smoke damage
Last week, the Federal Aviation Administration (FAA) said both batteries had leaked electrolyte fluid and there had been smoke damage to parts of the aircraft.
The NTSB said a group of experts would meet in Arizona this week where the battery charger is manufactured by Securaplane Technologies to test and examine the part.The NTSB said a group of experts would meet in Arizona this week where the battery charger is manufactured by Securaplane Technologies to test and examine the part.
The battery charger maker, a unit of Britain's Meggitt, said it would fully support the US investigation. United Technologies, which builds the aircraft's auxiliary power unit, said it would also cooperate.
On Friday, Boeing said it would put deliveries of the 787 on hold until the FAA approved its plan to ensure the safety of the batteries.
It said it would, however, continue building the light-weight fuel-efficient plane.
Japan is the biggest buyer of the aircraft with ANA and JAL operating 24 of the 50 Dreamliners currently in operation.
Boeing has orders for more than 800 Dreamliners.