London, Jan 31 (ANI): Japan's two top airlines said they had replaced a number of batteries in their Dreamliners over the past months.
All Nippon Airways said it changed batteries 10 times, and Japan Airlines (JAL) said it did so in a "few cases".
Earlier this month, a battery in a JAL 787 plane caught fire, while an All Nippon Airways flight was forced to make an emergency landing because of a battery malfunction.
The issues have resulted in the entire fleet of Boeing 787s being grounded, the BBC reports.
The incidents prompted authorities both in the US and Japan to launch inquiries to try to find out what caused the battery problems.
Japan's transport ministry had, however, said that safety inspectors had found no faults with the battery, leading to concerns that the planes might remain grounded for a while.
After the incidents involving the JAL and All Nippon Airways planes, the US Federal Aviation Administration (FAA) said both the batteries had leaked electrolyte fluid and there had been smoke damage to parts of the aircraft, the report said.
The FAA has said that the airlines must demonstrate battery safety before flights can resume, it added. (ANI)