CHICAGO (AP) -- United Airlines is delaying its new Denver-Tokyo service — again — because its new Boeing 787 jets remain grounded.
United said Friday that service between Denver and Tokyo's Narita Airport will begin June 10. The airline had already pushed back the original March 31 start to at least May 12.
The 787, which Boeing calls the Dreamliner, promises a more comfortable ride for passengers and significant fuel savings for airline customers. But all 50 of the planes in airline fleets are still grounded because of incidents involving smoldering batteries in January.
Boeing is currently testing a redesign of the battery system. It conducted one test flight this week and hopes to convince aviation regulators to let airlines resume flights with their 787s soon.