The Boeing Co. (NYSE: BA) 787 Dreamliner may never be entirely certified for safety, at least no in the minds of the public. The latest headlines regard trouble with a Japan Air owned plane.

According to the AP:

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.

The report said the sensor problem did not endanger safety.

JAL offices were closed for the weekend, and officials were not immediately available for comment.

“Dreamliner” batteries overheated on planes that were in flight in Japan and parked in a Boston airport. The jets resumed commercial flights last month at JAL and All Nippon Airways.

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