Yes. The door that fell off was part of a subcontracted fuselage assembly. Boeing inspectors found, on delivery, that it was not correctly installed. Apparently they very frequently found defects like this in delivered 737 fuselages. Rather than do something sensible such as shut down the fuselage plant until it could make defect-free assemblies, instead Boeing adopted a continuous re-work and re-inspect flow on the delivery side of the contracting relationship, with of course the cost borne by the subcontractor. This meant that Boeing staff essentially did the equivalent of filing bugs in the subcontractor's repo, but accepted the subcontractor's CI being green as proof the bug was fixed. Which in this case it was not.