Operational safety and customer satisfaction are of paramount importance to Airbus, driving the company’s unwavering commitment to product quality. Considering the current product demand and available new technologies, Airbus is constantly adapting to provide more and better products. This study aims to analyze the operational quality processes performed within the Horizontal Tail Plane (HTP) production lines across Airbus’s Single Aisle and Wide-body programs in order to propose effective improvement plans and optimize existing procedures. The approach begins with a top-down analysis, detailing all tasks across the different lines, considering not only regulatory standards but also the work performed by personnel on the shop floor.