A "defect" is any nonconformance of unit of product against the specified requirements. A "defective" is a unit of product which contains one or more defects. Below are the different defect level definitions:
A "Critical" defect is on one's judgment and experience indicates is likely to: (1) Result in hazardous or unsafe use, operation, or maintenance of the product, or (2) Prevent performance of tactical function of a major end item.
A "Major" defect is one other than critical. That is likely to result in the failure or to reduce materially the usability of the unit of product for its intended purpose.
A "Minor" defect is one that is not likely to reduce materially the usability of the unit of product for its intended purpose or is a departure from established standards having little bearing on the effective use or operation of the unit of product.
Defects detected during visual inspections are classified into three categories as follows:
corresponds to a defect likely to be unsafe for consumers. Our default Critical Defect AQL is Not Allowed.
results in function failures or reduction of product usability or obvious appearance faults which may affect the salability of the product. Our default Major Defect AQL is 2.5.
doesn't reduce the usability or function of the product, but is beyond the defined quality standard and may reduce the salability of the product. Our default Minor Defect AQL is 4.0.
Clients can also specify what points are Minor, Major or Critical in their own checklists.