A Dallas-bound flight was diverted to the Albuquerque International Sunport Sunday night after smoke filled the aircraft's cabin.
After the landing, the passengers were put on another aircraft to Dallas that arrived safely.
Mr Cox recalls "hitting the ground really hard" after jumping eight feet from the wing onto the tarmac and was left "shell-shocked" by the whole experience.
The Boeing 737 was en route to Dallas from Phoenix when it had to be diverted to Albuquerque, due to what could have been an electrical fire, according to NBC 4 NY. Five passengers "requested assessment by medical personnel", upon landing, the airlines said.
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He added: "It felt wrong when you're up there". "It was disorienting. (You think), 'Do I really just jump down?'" Fleck said. Passengers were told to brace as the plane landed.
The Federal Aviation Administration and the National Transportation Safety Board are investigating what caused the fire, reported KRQE. "It was dark, cold and rainy", he said.
According to the Albuquerque Fire Department, two people were taken to nearby hospital. No word on the extent of their injuries.
A Dallas police officer who was on the flight praised Southwest attendants following the incident on Twitter. In this photo, a Southwest Airlines jet passes two ATA Airlines jets sitting on the tarmac at Midway Airport in Chicago, Illinois, April 3, 2008.