A Boeing 787 had to make an unscheduled landing at Sea-Tac International Airport Tuesday afternoon because of a problem with an oil filter.
United Flight 139 from Denver to Tokyo-Narita shortly after 4 p.m. The aircraft landed normally, and United was working to accommodate 210 passengers on board.
Passengers were asked to stay overnight in Seattle and take a 9 a.m. flight Wednesday morning. A passenger on the flight tweeted that the United pilot said the engine was "not operating optimally," and the plane started dumping fuel.
United started the Denver to Tokyo-Narita route on June 10. This story will be updated.