Boeing 737 Max 9 door came loose mid-flight on January 5. No one was seriously injured, but the 737 MAX 9 had to make an emergency landing.
Images of terrified passengers sitting next to the gaping hole went viral around the world. Several bolts supposed to secure the cap holder were missing, according to the American Transportation Safety Agency (NTSB) The aircraft manufacturer was particularly criticized for the slowness of its cooperation with the authorities. In early March, the NTSB explained that it had not received certain important documents, and that the company had still not provided the names of employees who worked on the part in question.