Japanese and U.S. aviation authorities Tuesday continued their probe into GS Yuasa Corp., the maker of lithium-ion batteries used in Boeing Co.'s 787 Dreamliner jets grounded after a series of recent mishaps.
They are looking into whether the batteries were designed in line with Boeing's order by checking documents at the Kyoto-based manufacturer and the maker's quality control for the batteries, according to the transport ministry.
The probe is being conducted following an emergency landing last week involving a Dreamliner operated by All Nippon Airways Co. at Takamatsu Airport in Kagawa Prefecture after smoke appeared inside the aircraft.
Transport minister Akihiro Ota told reporters the Japan Transport Safety Board planned to conduct a computed tomography scan of the aircraft's charred battery at a Tokyo facility of the Japan Aerospace Exploration Agency on Tuesday afternoon.
The battery analysis will be observed by a U.S. National Transportation Safety Board official, who is visiting Japan for as part of the NTSB investigation into an electrical fire aboard a parked JAL 787 at Boston's Logan Airport earlier this month.
Separately, transport ministry officials were sent Tuesday to the British maker of a fuel cap valve linked to fuel leaks on a JAL 787, first at Boston, then at Narita International Airport on Jan. 13.