Passengers aboard an American Airlines flight faced a sudden emergency moments before takeoff at Denver International Airport in the United States.
Flight 3023 was preparing to depart when a landing gear problem forced the crew to abort takeoff.
Smoke and fire then appeared beneath the Boeing 737 MAX 8, prompting an emergency evacuation on the runway.

According to the Federal Aviation Administration, the crew reported a possible landing gear incident during departure.
American Airlines said a braking during the aborted takeoff led to an isolated brake fire.
Emergency slides were deployed as passengers quickly left the aircraft.
The flight was carrying 173 passengers and six crew members at the time and it is said that all passengers safely left the plane,