Transcript for Takeoff Aborted After Malfunction
And tonight the FAA is investigating a passenger jet scare last week. An allegiant arms flight from Vegas speeding down the runway, then the nose suddenly pulls up. Quick action from the pilot prevented disaster but this close call is raising new questions about safety in the air. Reporter: Allegiant air flight 436 was on its way from Las Vegas to Peoria, Illinois when the pilots reported a mechanical failure so severe, they were fighting against the plane's controls and had to abruptly abort their takeoff. According to the airline, "It was discovered that the left elevator boost actuator had become disconnected." That's the part of the plane helps the aircraft climb and descend. Translation, the md-83's nose reportedly started rising off the ground, before the plane was going fast enough to fly, and despite the crew's attempts to bring the nose back down. So they abruptly aborted takeoff at 138 miles per hour in order to keep the jet on the ground and under control. This was not a minor incident. This was an airplane that the crew didn't want it to do and could have resulted in a crash. Reporter: Tonight allegiant air says it has conducted a fleed-wide inspection and says all of its planes are safe. The FAA is investigating. From Wall Street tonight,
This transcript has been automatically generated and may not be 100% accurate.