A single passenger was killed in the plane when a fan blade broke and caused part of the engine's cover to hit the side of the jet. It broke one of the windows, and the cabin quickly became pressureless. The crew was able to land the plane, but the woman sitting next to the window was killed.
The National Transportation Safety Board, which investigated the accident, recommended Tuesday that Boeing redesign part of the aircraft's jet engine surface to prevent it from flying into the plane should a fan blade go off in a future flight. It said that all Boeing 737 Next Generation series would be rebuilt with which fix Boeing comes with.
Boeing has delivered about 6,700 of the 737 NG jets to airlines around the world, but it has stopped taking new orders for them when it switched to 737 Max. It has fewer than 100 of the NG plan yet to build and deliver.
Boeing 737 NG planes have not been affected by the foundation of 737 Max in the wake of two fatalities. But 737 NG had other security issues, including the discovery of cracks on some of the older planes on a part used to hold the wings in place. These cracks have founded a handful of the 737 NGs.
The final decision on any corrections is up to the Federal Aviation Administration, not the NTSB, whose job is to investigate the causes of accidents. But Boeing (BA) said that it is already working on improvements to the engine design to handle NTSB's recommendations. And it was said until the fix is in place inspections of the fan blades will allow the aircraft to operate safely.
"Our common goal is to help prevent similar events from happening in the future," it said.
The NTSB did not accuse either Boeing (BA) nor Southwest (LUV)and says that the crack in the fan blade could not be detected and that the risk of the engine cover breaking would be unknown before this incident.
But Boeing shares fell as much as 2% immediately after the report was released, though the latter recovered much of this loss.
– CNN's Rene Marsh contributed to this report