Video posted to social media showed passengers evacuating the aircraft using a slide as smoke and flames billowed from below the rear of the plane.

Fiery scenes unfolded on the tarmac at Denver International Airport on Saturday afternoon as an American Airlines passenger plane caught on fire. “Flight 3023, you got a lot of smoke,” air traffic control told the pilot, according to local NBC affiliate 9News. “You are actually on fire,” they added moments later.