The National Transportation Safety Board found Boeing and the FAA responsible for "multiple system failures," leading to Alaska Airlines' door blowing off mid-flight last year near Portland, Oregon.

Boeing will be back in the hot seat Tuesday as the National Transportation Safety Board holds a hearing to present its findings from an investigation into the terrifying incident in which a door plug blew out of an Alaska Airlines 737 Max.

The National Transportation Safety Board said Boeing and the Federal Aviation Administration could have done more to ensure the safety of the Boeing 737 Max.