PHILADELPHIA – An engine on a Dallas-bound Southwest Airlines flight with 149 people aboard apparently exploded on Tuesday, forcing an emergency landing in Philadelphia as one passenger was killed and another one was nearly sucked out a window of the plane, the airline and federal officials said.
The fatality on the flight from New York was the first in a U.S. commercial aviation accident since 2009, according to National Transportation Safety Board statistics.
After an engine on the plane's left side blew, it threw off shrapnel, shattering a window and causing cabin depressurization that nearly pulled out a female passenger, according to witness accounts and local news media reports.
"We have a part of the aircraft missing, so we're going to need to slow down a bit," the plane's captain, Tammy Jo Shults told air traffic controllers in audio released on NBC News.
Asked by a controller if the jet was on fire, Shults responds it was not but added, "They said there is a hole and someone went out."
"A woman was partially, was drawn out of the plane and pulled back in by other passengers," Todd Bauer, whose daughter was on the flight, told NBC's affiliate in Philadelphia.
NTSB Chairman Robert Sumwalt told a news briefing in Washington that one person had been killed, but declined to elaborate. The fatality was a passenger, according to Southwest Chairman and Chief Executive Officer Gary Kelly.
"The entire Southwest Airlines Family is devastated and extends its deepest, heartfelt sympathy to the customers, employees, family members and loved ones affected by this tragic event," Southwest said in a statement.
Flight 1380 had 144 passengers and five crew members, Sumwalt said.
One passenger was taken to the hospital in critical condition, and seven other people were treated for minor injuries at the scene, said Philadelphia Fire Department spokeswoman Kathy Matheson. Matheson could not confirm how the passenger in critical condition sustained her injuries.
Sumwalt said the NTSB believes parts came off of the engine but it has not determined if it was an "uncontained engine failure."
"There are protection rings around the engine to keep shrapnel from coming out. Even though we believe that there were parts coming out of this engine, it may not have been in that section of the engine that technically would qualify this as an uncontained engine failure," he said.
"We don't think there was a fire at all," he told the media briefing before departing for Philadelphia.
He said the NTSB sees about three or four uncontained engine failures a year, including non-U.S. carriers.
Flight 1380 was diverted to Philadelphia after crew members reported damage to an engine, the fuselage and at least one window, the Federal Aviation Administration said.
"Everybody was going crazy, and yelling and screaming," passenger Marty Martinez told CNN.
Martinez said objects flew out of the hole where the window had exploded, and "passengers right next to her were holding onto (the woman being pulled out). And meanwhile, there was blood all over this man's hands. He was tending to her."
Television images showed that most of the outer casing around the left engine of the Boeing 737-700 had ripped away and a window near the engine on the plane's left side was missing.
Southwest said the aircraft had been bound for Dallas Love Field in Texas from New York's LaGuardia Airport before it diverted to Philadelphia.
"All of a sudden, we heard this loud bang, rattling, it felt like one of the engines went out. The oxygen masks dropped," a passenger, Kristopher Johnson, told CNN. "It just shredded the left-side engine completely. … It was scary."
Southwest shares fell more than 3 percent after the NTSB reported the fatality, then cut losses to close down 1.1 percent at $54.27 a share on the New York Stock Exchange.
Boeing said on Twitter that it was aware of the incident and was "gathering more information."
The plane's engines are made by CFM International, a French-U.S. venture co-owned by Safran and General Electric, which was not immediately available for comment.
(Additional reporting by Tim Hepher in Paris, Andrew Hay in New Mexico, David Shepardson in Washington, Alana Wise and Peter Szekeley in New York)