Article: Was the Boeing 737 Door Blow-out the Starting Line For a Race to Destruction?
Article: Was the Boeing 737 Door Blow-out the Starting Line For a Race to Destruction? - Structures, like door components of the Boeing 737-9, may fail in a process known as fatigue, and fatigue failures start with a single failure, followed by many subsequent failures. When jets take off, the fuselage expands, and a new force is slammed against the fuselage during every takeoff. These conditions were in place when the door stop blew off of a Boeing jet. The NTSB investigation team has a credibility problem.
Source: opednews.com