The National Transportation Safety Board (NTSB) has identified systemic failures at Boeing and the Federal Aviation Administration (FAA) as the primary causes of a door plug blowout incident aboard an Alaska Airlines flight. Investigations revealed inadequate training and oversight from Boeing, contributing to multiple system failures that ultimately led to the mid-air emergency. The NTSB has criticized both companies for their roles in this preventable incident and highlighted the need for a redesign of the 737 MAX door plugs. Ongoing discussions aim to address these safety concerns and prevent future occurrences.