The National Transportation Safety Board chairwoman says heroic actions by the crew aboard an Alaska Airlines flight ensured everyone survived last year when the door plug panel blew out of the plane.

The National Transportation Safety Board determined that "multiple system failures," including poor practices at Boeing and poor oversight by the Federal Aviation Association, caused the Alaska Airlines flight door plug blowout,

The blame for a horrifying mid-flight blowout of a door plug on an Alaska Airlines flight last year is shared by plane manufacturer Boeing, its supplier Spirit Aerosystems and the Federal Aviation Administration,