All Nippon Airways Co. will resume flights of the troubled 787 Dreamliner this month, slightly earlier than scheduled, sources said Thursday.
ANA, which initially wanted the advanced Boeing Co. plane to return to action on June 1, is planning to use it for provisional flights departing Haneda airport in Tokyo because it has already finished installing an improved battery system in its fleet of 17 787s and found no problems during test flights, the sources said.
ANA and Japan Airlines Co. — the two largest users of the 787 — reported the results of their test flights to the transport ministry Thursday.
Regulators worldwide grounded the advanced jet after one run by ANA made an emergency landing on Jan. 16 after a battery-related defect developed.
On April 26, U.S. and Japanese aviation authorities gave the green light to put the 787 back in service, following Boeing's measures to improve its battery system.