The plug is referred to as an MED plug in the agency's report. ...

Investigators found four bolts missing in the door plug, that weren`t replaced after a repair job on the door. Leadership from Boeing and Sprit Aerosystems will testify before federal regulators ...

Perhaps the most inflammatory action was Boeing’s framing of the ongoing investigation to identify how and why four bolts which would have prevented the door plug from coming loose were not ...

and investigators quickly identified it had been missing bolts to keep it in place. A preliminary NTSB report found evidence suggesting the door plug was removed prior to leaving the facility to ...