Sustainability requirements: Boeing expects suppliers to uphold environmental responsibility by aligning their practices with Boeing's sustainability goals. Suppliers are encouraged to improve environmental performance throughout a product's lifecycle, from sourcing to end-of-life recycling. Boeing emphasizes collaboration with suppliers on high-priority environmental improvements and fosters broader idea-sharing through industry forums. Suppliers are also expected to adhere to specific environmental provisions in contracts, with environmental criteria increasingly integrated into Boeing's supplier evaluation and selection processes.