<![CDATA[PT XYZ operates in the manufacturing industry with a focus on producing wind musical instruments. The Incoming Quality Assurance (IQA) inspection process at PT XYZ faces challenges related to the effectiveness and efficiency of quality control, as indicated by the high number of material defects recorded in April 2025, totaling 8,583 defective items. The incomplete implementation of the Acceptable Quality Level (AQL) method at PT XYZ has resulted in some inspection processes still being conducted through 100% inspection, leading to inefficiencies in inspection time, particularly given the limited number of available inspectors. This study aims to evaluate the application of the AQL method based on the ANSI/ASQ Z1.4 standard and to analyze sample performance as an effort to improve inspection efficiency. The methods applied in this study include the use of the Seven Tools approach to identify types of defects, the application of the AQL method in the sampling process and lot acceptance decision-making, and the measurement of sample performance. The Seven Tools analysis identified scratch defects as the most dominant type, accounting for 35% of the total defects. The implementation of the AQL method resulted in an AQL value of 2.5 under the normal inspection category, with a sample size of 20 units and acceptance and rejection numbers of 1 and 2, respectively. The sample performance evaluation showed an Operating Characteristic (OC) curve value of 0.9198, an Average Outgoing Quality (AOQ) of 1.916%, and an Average Total Inspection (ATI) of 29.7 units. These findings demonstrate that the application of the AQL method is effective in reducing defect rates while improving the efficiency of the IQA process without the need for 100% inspection.]]>
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