Quality audit is an appraisal of the whole quality control. It is not so much concerned with the quality of the product as with the quality of the product as with the adequacy and effectiveness of the quality control system. Quality audit may be conducted periodically or only when occasion demands due to existence of quality problems. Quality audit includes the examination of the following aspects.

a. Completeness and clarity of the manufacturing drawings and specifications and procedure for their updating.

b. Process capability of manufacturing equipment and adequacy of process controls.

c. Quality control of incoming materials and procedure of vendor capacity certification.

d. Adequacy and accuracy of gauges and test equipment and procedure for their calibration.

e. Quality organization and quality control procedures.

f. Reject rate of the product as revealed by in process and final inspection results.