A preliminary report from the NTSB found that the bolts meant ... that four bolts were missing from a door plug that blew off an Alaska Airlines 737 Max 9, causing rapid decompression.

Boeing is redesigning the fuselage component that blew out of a nearly new 737 Max 9 aircraft ... so-called door plug from ...

United Airlines and Alaska Airlines found loose bolts and other ... Transportation Safety Board said if the door plug had broken from the Max 9 at cruising altitude of 36,000 feet, not 16,000 ...

Alaska Airline's Boeing 737 Max 9 plane was scheduled for a safety check on the day of window blowout incident after engineers had mounting concerns ...

Here's a short list of some of the quality-control headaches and public-relations crises Boeing has endured: 737 Max 9 blowout In January, a Max 9 door plug blew ... an airline found a bolt ...