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.

One of a team of 24 had opened a door-plug before, but he was on vacation — leading the NTSB to criticise Boeing's on-the-job training.

National Transportation Safety Board investigators on Tuesday made new safety recommendations following the Jan. 5, 2024, incident in which a door panel blew out on an Alaska flight.