A Japan Airlines flight to Tokyo has returned to the US amid a suspected fuel pump issue on the Boeing 787 aircraft.
It is the latest setback for Chicago-based Boeing's new Dreamliner plane after a lithium ion battery problem grounded the fleet in January and a fire on an Ethiopian Airlines plane last week.
Japan Airlines spokeswoman Carol Anderson said Flight 007 returned to Boston's Logan Airport on Thursday night "as a standard precautionary measure" to check a maintenance message indicator showing the possible fuel pump problem.
Federal Aviation Administration spokeswoman Arlene Sarlac said the pilot did not declare an emergency and the aircraft burned off fuel before landing.
The plane left for Narita Airport, Tokyo just before 1pm local time yesterday for a flight of nearly 14 hours. It returned shortly after 6pm.
Meanwhile, a United Airlines Boeing 777 jet heading to Amsterdam returned to Texas shortly after take-off after problems were reported with one of its two engines.
United Flight 58 left Houston Bush Intercontinental Airport on Thursday afternoon local time. A statement from the airline said the plane landed safely. None of the 223 passengers and 15 crew members was injured.
United said passengers would be be booked on another airline while maintenance workers examined the aircraft.
A Boeing 777 was involved in the July 6 crash in San Francisco of an Asiana flight from Seoul, South Korea, in which three people were killed. The National Transportation Safety Board says it has found no mechanical or computer problems with the plane.