Boeing Takes Responsibility for Missing Bolts Incident on 737 Max 9

The company is implementing quality measures following the NTSB's report on the January 5 panel detachment incident.

The National Transportation Safety Board (NTSB) issued a preliminary report stating that four bolts designed to secure a panel on a Boeing 737 Max 9 were missing before the panel detached midflight on January 5.
Boeing has acknowledged responsibility for the incident and is taking immediate actions to strengthen quality, including ensuring all mid-exit door plugs on 737-9s are installed properly.
The Federal Aviation Administration (FAA) grounded 171 Boeing 737 Max 9 planes following the incident, but those planes have since been cleared to return to service.
The FAA is conducting an audit of Boeing's manufacturing processes and has increased oversight, including moving inspectors into facilities.
The incident has raised concerns about manufacturing quality at Boeing, adding to questions that began with the deadly crashes of two Max 8 jets in 2018 and 2019.