Since a door plug blew out of a Boeing 737 Max during an Alaska Airlines flight in January, Boeing has lurched from crisis to crisis - and it stock has fallen by a quarter. While they investigate ...

United Airlines and Alaska Airlines found loose bolts ... Spirit makes the body for the 737 Max, including installing the door plugs on models configured not to use the optional emergency exits ...

The Federal Aviation Administration is now calling for airlines to "visually inspect mid-exit door plugs" of Boeing 737-900ER aircraft as it continues its review of grounded Boeing 737-9 MAX ...

That is apparently what caused the mistake that led to the Alaska Airlines accident: Bolts that were removed to open the door plug for maintenance workers were not replaced when the panel was ...