Boeing 787 'Dreamliner' jets grounded in Japan, US
A computer problem, a minor fuel leak and a cracked windscreen in a cockpit were also reported on a 787 in Japan this month.
Boeing has said that various technical problems are to be expected in the early days of any aircraft model.
GS Yuasa Corp., the Japanese company that supplies all the lithium ion batteries for the 787, had no comment as the investigation was still ongoing. Thales, which makes the battery charging system, had no immediate comment.
Much remains uncertain about the problems being experienced by the 787, said Masaharu Hirokane, analyst at Nomura Securities Co. in Tokyo.
‘‘You need to ensure safety 100 percent, and then you also have to get people to feel that the jet is 100 percent safe,’’ Hirokane said.
Associated Press writers Kelvin Chan in Hong Kong, Joan Lowy in Washington and Mari Yamaguchi in Tokyo contributed to this report.