London, Feb 5 (ANI): Boeing has sought the permission of the US Federal Aviation Administration (FAA) to conduct test flights of its 787 Dreamliner passenger plane, a report has said.
All 50 of Boeing's 787s were grounded last month because of an ongoing investigation into battery problems.
A battery on a Japan Airlines 787 caught fire, and a malfunction forced an All Nippon Airways flight to make an emergency landing.
Peter Conte, a spokesman for Boeing, said that the firm's application was "under evaluation" by the FAA, the BBC reports.
The incidents on the Japan Airlines (JAL) and All Nippon Airways (ANA) planes prompted authorities in both the US and Japan to launch inquiries to try to find out what caused the battery problems.
However, Japan's transport ministry said that safety inspectors had found no faults with the battery, the report said.
At the same time, Boeing, which launched its own investigation into the issue, also defended the battery being used on the plane, it added. (ANI)