The best practice paper has been originally developed by the advisory board of the ECA Visual Inspection Group. Much rather than a strict requirement document, this paper is intended to be a reference for controversial issues. A regular update of the paper is intended to keep it up to date.
The third edition was reviewed - and is now replaced by version 3.1. Besides some editorial changes, this version now comprises a precision with regard to the minimum AQL level for batch release. Further, the requirement for "sum of defects" has been deleted.