“Something is wrong with our plane!” one passenger captioned a terrifying Facebook video. “It appears we are going down! Emergency landing!!”

One person died Tuesday when a Southwest Airlines flight made an emergency landing in Philadelphia after one of its engines failed.

Officials said Tuesday that one passenger had been transported to the hospital, but did not specify if that person was the fatality.

Fire officials said seven people were treated at the scene for minor injuries.

National Transportation Safety Board (NTSB) chairman Robert Sumwalt said that investigators were classifying what happened on the Southwest flight as an “engine failure.”

Classifying it as an “uncontained engine failure,” he said, depends on where, exactly, parts that left the engine originated.

The NTSB sees “three or four” uncontained engine failures a year, he said, noting that not all of those cases were on US carriers.

Sumwalt added that investigators would be looking for any possible relationship between the Tuesday incident and what happened over the Gulf of Mexico on a Southwest flight in 2016, when an engine fell apart mid-air.

“We want to look at this particular event and see what the factors are related to maybe they’re related to the previous event or maybe not,” he said.

The Dallas-bound flight on Tuesday landed at Philadelphia International Airport after taking off from New York City’s LaGuardia Airport. According to the airline, the Boeing 737-700 had 143 customers and five crew onboard.

The Federal Aviation Administration said in a statement that the airplane landed “after the crew reported damage to one of the aircraft’s engines, as well as the fuselage and at least one window.”

“We are in the process of transporting customers and crew into the terminal,” the airline said in an initial statement about the incident.