[3][4] It is unclear whether this interpretation will be brought into general usage, but the underlying meaning remains the same.
The defects found during an electronic or electrical test, or during a physical (mechanical) inspection, are sometimes classified into three levels: critical, major and minor.
Critical defects are those that render the product unsafe or hazardous for the end user or that contravene mandatory regulations.
Major defects can result in the product's failure, reducing its marketability, usability or saleability.
In order to avoid argument, buyers and sellers agree on an AQL standard, chosen according to the level of risk each party assumes, which they use as a reference during pre-shipment inspection.