Japan's Transport Ministry: Dreamliner Battery Not to Blame For Faults
Entire fleet still grounded
Airline safety inspectors have found no faults with the battery used on Boeing's 787 Dreamliner, Japan's transport ministry has said.
The battery was initially considered the likely source of problems on 787s owned by two Japanese airlines.
The world's entire fleet of 50 787s has been grounded while inspections are carried out.