United Airlines plans to resume 787 service in May

WASHINGTON (CNN) -- United Airlines plans to resume flying the 787 Dreamliner in May, the carrier told CNN in anticipation of regulatory approval of Boeing's remedy for battery problems that forced the jetliner's worldwide grounding.

United, the only U.S. airline that flies the 787, said it was in the process of formulating its plans to resume Dreamliner service. It will fly the plane on both domestic and international routes.

Boeing modified the 787's lithium-ion battery system after fires in Boston and in Japan prompted aviation authorities globally to ground it in January. The Federal Aviation Administration must sign off on the redesign.