United Airlines discovers loose fasteners on Boeing 737 Max 9

United Airlines recently discovered that some bolts on its 737 Max 9 aircraft required tightening during inspections. This revelation came after a door plug fell off from an Alaska Airlines plane. More information on this story will be provided shortly, so please refresh the page for the complete version. To stay updated, Breaking News can be received on smartphones or tablets through the BBC News App, or by following @BBCBreaking on Twitter.