Japan's All Nippon Airways had 17 Boeing 787s in its fleet when the jet was grounded by aviation officials on Jan. 16. The grounding was lifted three months later after Boeing devised an updated battery system for the Dreamliner.
ANA outlined last month its own plan for returning the 787 to service. Aside from installing the new battery system, ANA planned to fly the 787s on more than 200 test flights to allow pilots to become familiar again with the jet.
"Our engineers have worked closely with Boeing to undertake the required improvements and we are fully satisfied with the safety of our 787 fleet,” Osamu Shinobe, president of ANA, said in a statement.
The airline also plans to add three new international routes -- Narita to Beijing and Shanghai and Haneda to Taipei -- with the 787 this summer.
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