The Boeing 787, from Washington, D.C., to Munich, had to make hasty return to the airport "to address a mechanical issue," the carrier said.

United Flight 108 had just departed for an hours-long flight to Germany, when one of its engines malfunctioned.

A United Airlines flight was diverted shortly after departing Washington Dulles International Airport on Friday, July 25, when an engine failure caused the pilot to make a mayday call. United Flight 108 had just taken off for its journey to Munich at around 6 p.