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

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

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

Gosh, The Boeing 737 MAX Is A Mess - One Mile at a Time

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

United Airlines finds loose bolts on door plugs in grounded 737 MAX 9 planes – KIRO 7 News Seattle

United Airlines finds loose bolts on Boeing 737 jet doors

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

Boeing, not Spirit, mis-installed piece that blew off Alaska MAX 9 jet, industry source says

Loose bolts found on door plugs of grounded United Airlines Boeing 737 Max 9 planes

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

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

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

United Airlines found loose bolts, other issues on grounded Boeing 737 Max 9 jets

United finds loose bolts on 737 Max 9 planes in wake of Alaska Airlines door plug incident - ABC News

Alaska Airlines 737-900 MAX loses a door in-flight out of PDX - Page 22 - PPRuNe Forums