DENVER — The Federal Aviation Administration is investigating what caused part of an engine on a United Airlines plane to come loose after takeoff.
The Boeing 737 was scheduled to fly from Denver to Orlando, Florida, on Sunday, but returned and landed safely at Denver International Airport after the incident.
An FAA spokesman said Monday the plane had an issue with an engine panel.
Video recorded by passengers showed the engine covering flapping loosely while the plane was in flight.
Engines coming apart are dangerous because pieces can break off and become debris that strikes the plane.
United tweeted the plane returned to the terminal and customers were rebooked on different flights.