The NTSB on Thursday released its final report on a midair door plug blowout on an Alaska flight last year and assigned ultimate responsibility to Boeing.

The NTSB investigation over the past 17 months found that four bolts securing what is known as the door plug panel were removed and never replaced during a repair as the Boeing 737 Max 9 aircraft was ...

The NTSB is set to unveil its findings about what caused a door plug to blow out of a Boeing 737 MAX jet in midair last year.

The investigation has already revealed that bolts were never replaced after the door plug was removed during a repair. The NTSB is expected to approve several recommendations at Tuesday's meeting ...

NTSB staff also told the board that Boeing didn't have strong enough safety practices in place to ensure the door plug was properly reinstalled, and the FAA inspection system did not do a good job ...

NTSB staff also told the board that Boeing didn't have strong enough safety practices in place to ensure the door plug was properly reinstalled, and the FAA inspection system did not do a good job ...

NTSB staff also told the board that Boeing didn't have strong enough safety practices in place to ensure the door plug was properly reinstalled, and the FAA inspection system did not do a good job ...

NTSB staff also told the board that Boeing didn't have strong enough safety practices in place to ensure the door plug was properly reinstalled, and the FAA inspection system did not do a good job ...

NTSB staff also told the board that Boeing didn't have strong enough safety practices in place to ensure the door plug was properly reinstalled, and the FAA inspection system did not do a good job ...

NTSB staff also told the board that Boeing didn't have strong enough safety practices in place to ensure the door plug was properly reinstalled, and the FAA inspection system did not do a good job ...

NTSB staff also told the board that Boeing didn't have strong enough safety practices in place to ensure the door plug was properly reinstalled, and the FAA inspection system did not do a good job ...

NTSB staff also told the board that Boeing didn't have strong enough safety practices in place to ensure the door plug was properly reinstalled, and the FAA inspection system did not do a good job ...