A United Airlines flight headed for Berlin had to return to Newark, New Jersey Saturday after a problem with one of the aircraft's engines, officials said.
Crew aboard United Flight 96 from Newark Liberty International Airport initially reported an issue with the left engine, Federal Aviation Administration spokeswoman Kathleen Bergen told AFP.
Although the engine was operating normally soon afterward, "as a precaution, the flight returned to Newark," she added.
The Boeing 757 plane, which carried 173 passengers and crew, landed safely shortly after 8:00 pm (0000 GMT Sunday), about two hours after takeoff.
Bergen could not confirm a CNN report that a tire had blown during takeoff and flew into an engine, causing a fire.
The FBI did not immediately respond to requests for comment.
CNN cited several witnesses as saying they had seen flames coming out of the engine.
Dennis Ostolaza told the television network he heard a "propeller sound" like a military helicopter as the plane lifted off, with "black smoke and fire spitting out of the engine."
by Jean-Marc Mojon Â© 2012 AFP
Date: Aug 19, 2012