United Airlines is finding loose fitting mounting bolts for the mid aft plug door 737-9 : r/boeing

United and Alaska find loose bolts during B737-9 MAX check- AeroTime

United Airlines finds loose bolts, other issues on a key part of grounded Boeing 737 Max 9 jetliners

United finds loose bolts on some 737 Max 9 door plugs

Here's The Difference Between 'Plug Doors' And 'Door Plugs' And How Both Keep You From Blowing Out Of A Plane - The Autopian

Here's The Difference Between 'Plug Doors' And 'Door Plugs' And How Both Keep You From Blowing Out Of A Plane - The Autopian

Boeing: United Airlines finds loose bolts on 737 Max doors

United Airlines says it found loose bolts while inspecting Boeing 737 Max 9 planes - The Verge

United finds loose bolts on plug doors during 737 Max 9 inspections - The Air Current

Alaska, United find loose hardware during inspection of 737 MAX 9s

United, Alaska Air find loose hardware on Boeing 737 Max 9s

Alaska Airlines 737-900 MAX loses a door in-flight out of PDX - Page 74 - PPRuNe Forums

Alaska Airlines 737-900 MAX loses a door in-flight out of PDX - Page 74 - PPRuNe Forums

United Airlines Finds Loose Bolts on Boeing 737 MAX 9 Door Plugs