ToplineThe problem that caused a door plug to blow off a Boeing 737 Max 9 plane during an Alaska Airlines flight last month could happen again, according to National Transportation Safety Board chair Jennifer Homendy, who added to recent criticism of Boeing by claiming the airplane manufacturer has a “quality control problem.”A preliminary report by the agency determined four key bolts were missing from the plane. Copyright 2024 The Associated Press. All rights reserved. Key FactsHomendy told CNN an inciden ...