Alaska Airlines Plane Appears To Have Left Boeing Factory Without Critical Bolts
Published on January 30, 2024 at 01:31AM
Regulators put limits on Boeing 737 MAX production; grounded MAX 9 jets have resumed flying after required inspections. From a report: Bolts needed to secure part of an Alaska Airlines jet that blew off in midair appear to have been missing when the plane left Boeing's factory. Boeing and other industry officials increasingly believe the plane maker's employees failed to put back the bolts when they reinstalled a 737 MAX 9 plug door after opening or removing it during production, according to people familiar with the matter. The increasingly likely scenario, according to some of these people, is based partly on an apparent absence of markings on the Alaska door plug itself that would suggest bolts were in place when it blew off the jet around 16,000 feet over Oregon on Jan. 5. They also pointed to paperwork and process lapses at Boeing's Renton, Wash., factory related to the company's work on the plug door. The National Transportation Safety Board has been conducting metallurgical analysis of the plug door but hasn't released the results of the testing. Laboratory tests might show whether the bolts were in place or not there at all. An update in the NTSB probe is expected as soon as this week. New evidence could later emerge before accident investigators reach final conclusions. It couldn't be determined how many people were involved with work on the plug door at Boeing's 737 factory. Supplier Spirit AeroSystems delivered the 737 fuselage to Boeing's factory with the door plug installed. The plug door itself was constructed in Spirit's Malaysian factory, while the fuselage was assembled in Wichita, Kan. Boeing opened or removed the door plug after the 737 MAX 9 jet's fuselage arrived at the plane maker's Renton, Wash., factory for final assembly, The Wall Street Journal and other news outlets have reported.
Published on January 30, 2024 at 01:31AM
Regulators put limits on Boeing 737 MAX production; grounded MAX 9 jets have resumed flying after required inspections. From a report: Bolts needed to secure part of an Alaska Airlines jet that blew off in midair appear to have been missing when the plane left Boeing's factory. Boeing and other industry officials increasingly believe the plane maker's employees failed to put back the bolts when they reinstalled a 737 MAX 9 plug door after opening or removing it during production, according to people familiar with the matter. The increasingly likely scenario, according to some of these people, is based partly on an apparent absence of markings on the Alaska door plug itself that would suggest bolts were in place when it blew off the jet around 16,000 feet over Oregon on Jan. 5. They also pointed to paperwork and process lapses at Boeing's Renton, Wash., factory related to the company's work on the plug door. The National Transportation Safety Board has been conducting metallurgical analysis of the plug door but hasn't released the results of the testing. Laboratory tests might show whether the bolts were in place or not there at all. An update in the NTSB probe is expected as soon as this week. New evidence could later emerge before accident investigators reach final conclusions. It couldn't be determined how many people were involved with work on the plug door at Boeing's 737 factory. Supplier Spirit AeroSystems delivered the 737 fuselage to Boeing's factory with the door plug installed. The plug door itself was constructed in Spirit's Malaysian factory, while the fuselage was assembled in Wichita, Kan. Boeing opened or removed the door plug after the 737 MAX 9 jet's fuselage arrived at the plane maker's Renton, Wash., factory for final assembly, The Wall Street Journal and other news outlets have reported.
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