4:30 PM PT -- The one fatality is the woman who was sucked out of the window, TMZ has learned. Passengers said Jennifer Riordan's entire upper body was outside and she was bleeding profusely before others were able to pull her back inside the cabin. They performed CPR on her for up to 20 minutes.
1:18 PM PT -- One person is confirmed dead, according to a rep for the National Transportation Safety Board.
Southwest Airlines passengers were remarkably calm moments after one of the plane's engines was shredded by something -- despite the fact one of them was almost sucked out of the cabin.
The images from the Tuesday morning flight -- which made an emergency landing in Philadelphia -- are pretty terrifying. Shrapnel from the left wing turbine apparently flew back and shattered a cabin window, and witnesses say, if not for the aid of her fellow passengers ... one woman would have been sucked through the opening.
Eyewitness video shows the Southwest Flight 1380 emergency landing from a passenger perspective. At least one person was rushed to the hospital with unknown injuries https://t.co/FdMymlzMMg pic.twitter.com/ecUMzEEl7f
Video shot by one of the passengers shows the oxygen masks deployed, but the cabin is eerily quiet, other than a rush of wind.
The plane, which was on its way from NYC to Dallas, managed to touch down relatively safely in Philly. Only one passenger was taken to the hospital.
According to one witness ... a passenger suffered a heart attack, but that hasn't been confirmed. Southwest and the NTSB are investigating what caused the engine damage.