An early morning flight to Detroit returned to the gate shortly after pushing back when flames were seen shooting from the back of the plane, the Dallas Morning News reports.
Flight 294 was taxiing just before 7:30 a.m. when the pilot of another plane saw flames and called for fire trucks. Emergency vehicles surrounded the plane. An immediate fire was not found, but the runway was briefly closed.
An official with the Federal Aviation Association says a fuel leak may have resulted in a ball of flames shooting out the back of the plane when it was pushed into throttle for takeoff.
It was unclear how long the flight would be delayed or if passengers were placed on other flights. All runways are open and outbound flights are onetime, the Dallas Morning News reports.