A Japanese broadcaster is reporting that a sensor problem was found in one of the exchanged batteries for a Japan Airlines Boeing 787 jet. The Boeing Co. jets had been grounded for four months until their safety could be reconfirmed.
NHK TV says the problem emerged Sunday in a sensor that detects overheating in the modified version of the lithium-ion batteries used in the aircraft. The batteries were encased to prevent overheating from spreading.
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