According to insiders on January 12th, Boeing typically does not make adjustments to the panel types involved in the 737 MAX 9 explosion unless factory testing reveals issues. According to insiders, last week Boeing supplier Spirit AeroSystems sent a semi-finished fuselage to Boeing from its factory, which was equipped with a special panel to replace the optional emergency exit, but it has not yet been completed. Boeing workers typically remove panels, install cabin equipment through gaps, and then replace panels to complete installation. But according to insiders, according to Boeing's standard factory procedures, Boeing will only remove or adjust panels when there are signs of installation errors. Insiders also said that Boeing does conduct certain inspections and pressure tests before delivering the aircraft.
On the 5th of this month, the cockpit panel of a Boeing 737 MAX 9 aircraft operated by Alaska Airlines fell off during flight, causing the aircraft to make an emergency landing. The Federal Aviation Administration of the United States subsequently ordered the grounding and inspection of 171 Boeing 737 MAX 9 aircraft worldwide. The Federal Aviation Administration (FAA) announced on the 12th that it will vigorously strengthen supervision of Boeing's production and manufacturing, and will conduct new audits of the Boeing 737 MAX 9 production line and its suppliers. Federal Aviation Administration Director Mike Whittaker stated that he believes the issue with the Boeing 737 MAX 9 is a manufacturing issue, not a design issue. (Reuters)