Kyoto, Japan-based GS Yuasa Corp. said it began working Thursday with investigators probing the cause of recent problems with the 787.
A leaking battery prompted an All Nippon Airways jet to make an emergency landing Wednesday.
A spokesman for GS Yuasa, Yasushi Yamamoto, said it was unclear if the batteries were the cause of the problems that led aviation regulators in Japan, the U.S., India, Europe and the Middle East to ground the 787s.
The 787 relies far more than older aircraft on electrical systems, and troubles with the batteries could pose a challenge to GS Yuasa's aerospace aspirations.
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