Former NFL QB Robert Griffin III describes harrowing engine fire on United flight

Former Heisman-winning quarterback and NFL star Robert Griffin III was on a plane that had to make an emergency landing Friday, according to a social media video posted by the signal-caller.

Griffin, 36, posted the footage late Friday night, claiming that his United plane was flying out of Houston when the right engine "caught fire" after takeoff.

The footage depicts a United plane back at the terminal.

"We heard 15 straight loud bangs and immediately knew something was wrong," he said.