According to the 29th local time of the American "Wall Street**", on the 5th of this month, the Boeing passenger plane in the accident of Alaska Airlines may have lacked fixing bolts on its emergency hatch when it left the factory.
According to the report, Boeing insiders believe that workers on the company's production line may not have put the bolts back when they opened or removed the plane's emergency hatch and then reinstalled it. This is because there are no bolt mounting markings on the door of the aircraft. People familiar with the matter also noted that Boeing's Renton, Washington, plant had lapses in paperwork and processes related to the doors involved. The National Transportation Safety Board is expected to release an update on the investigation this week.
In addition, Boeing filed an application with the Federal Aviation Administration last year to request a safety standard waiver for the 737 Max 7 model, which is awaiting certification, so that the aircraft can enter service before making the necessary design changes. However, Boeing confirmed on the 29th that it had withdrawn the application.
The Federal Aviation Administration said on the 24th of this month that it would not agree to any request from Boeing to expand the production of the 737 MAX model and would not approve the addition of the 737 MAX production line until the quality control issues were properly resolved.
On January 5, an Alaska Airlines Boeing 737 MAX 9 was involved in an emergency hatch accident in the air. Investigators examined and found that four bolts that were supposed to hold the door plug in place were missing. The Federal Aviation Administration of the United States has since ordered the aircraft to be temporarily grounded. Alaska Airlines and United Airlines have both recently said they are disappointed by the quality of Boeing's aircraft and may consider other aircraft purchase options in the future.
*: CCTV news client).