Video shows flames emerging from Frontier Airlines flight after emergency landing

A trail of flames can be seen in video footage beneath a Frontier Airlines plane as it lands on a runway in Las Vegas. This is an incident that is being investigated by federal officials.

Flight 1326 from San Diego landed hard at Harry Reid International Airport on Oct. 5 after “pilots encountered smoke and declared an emergency,” Frontier said in a statement to NBC News.

A cell phone video showed fire and black smoke rising from under the Airbus 321. According to the Federal Aviation Administration, investigators said the flight crew made a hard emergency landing after reporting smoke in the cockpit.

Passengers Lucas Shook and Alondra Soto told NBC News correspondent Maggie Vespa on TODAY Monday that they felt severe turbulence as the plane plunged like a roller coaster several times as it approached the runway. Then, as they landed, they saw smoke outside their windows and said all four of the plane's tires had burst.

“It's like if you just sit in a chair and drop three feet and feel it,” Shook said. “Both of our backs are a little sore.”

“And we landed and it was so hard,” he continued. “I felt it through my body, and she felt it too.”

“I was very scared,” Soto said.

Radio traffic indicates that the crew was silent on approach to the runway.

“Red Dog 40, we have no communication with the pilot at all,” air traffic controllers can be heard saying. “His radios failed. We have no communication with the pilot.”

Passengers and crew were evacuated by firefighters via stairs after the plane landed safely. They were then taken to the terminal by bus. No injuries were reported, airline and airport officials said.

The FAA and the National Transportation Safety Board are investigating the cause of the incident.

““This is a very serious situation,” NBC News aviation analyst Jeff Guzzetti, a former FAA accident investigator, told TODAY on Oct. 7.

“This crew experienced a very serious emergency with smoke in the cockpit, which affected their ability to communicate with air traffic control.”

Soto and Shook told Vespa that Frontier offered them a $200 voucher to redeem within three months, which frustrated them.

However, Frontier told NBC News that all customers also received a refund for their flight.