ABSTRACT : The global textile industry faces numerous challenges, including changing fashion trends, increasing consumer demand for sustainability and quality, and intense competition. PT Logachan Tekstil, an Indonesian textile manufacturer, is aiming to improve quality control through the Lean Six Sigma DMAIC methodology. The study identifies the root causes of defects in polyester yarn production, affecting customer satisfaction and sales. Tools like Fishbone Diagrams, Pareto Charts, and FMEA are used to analyze the process. Key findings reveal issues like inadequate training, inconsistent quality control practices, and equipment maintenance lapses. Solutions include comprehensive training, standardized inspection processes, advanced data analytics, and improved team communication. The study integrates Lean Six Sigma with real- time data analysis to enhance product quality and operational efficiency. Continuous improvement programs, customer feedback mechanisms, and regular audits are recommended to ensure sustained quality and competitiveness.

KEYWORDS – Textile Industry, FMEA, DMAIC, Lean Six Sigma