The nation's top safety investigators concluded there were multiple systemic failures that led to a midair blowout during the flight of an Alaska Airlines Boeing 737 Max jet last year.

The first six minutes of the flight to Southern California’s Ontario International Airport were routine. The Boeing 737 Max 9 was about halfway to its cruising altitude and traveling at more than 400 mph (640 kph) when passengers described a loud “boom” and wind so strong it ripped the shirt off someone’s back.

On January 4, 2024, a door plug blew out on a Boeing 737 Max at more than 16,000 feet in the air, leaving a gaping hole in the side. On Tuesday, the National Transportation Safety Board will hear all of the findings of the investigation and take a vote to determine what the probable cause of the incident was.