Officials gauging possibility of 4 bolts missing before Alaska Air take-off
Federal investigators say a door panel slid up before flying off an Alaska Airlines jetliner last week, and they are looking at whether four bolts that were supposed to help hold the panel in place might have been missing when the plane took off.
The comments on Monday from the National Transportation Safety Board came shortly after Alaska and United Airlines reported separately that they found loose parts in the panels or door plugs of some other Boeing 737 Max 9 jets.
Since we began preliminary inspections on Saturday, we have found instances that appear to relate to installation issues in the door plug for example, bolts that needed additional tightening, Chicago-based United said.
