AS9100 Quality Systems - Aerospace - Model for Quality Assurance in Design, Development, Production, Installation and Servicing.   AS9100 focuses on key areas that have a direct impact on product safety and reliability, including:     CONFIGURATION MANAGEMENT - requires that a management discipline is applied over the life cycle of a product to provide visibility and control of its functional and physical characteristics. DESIGN - to ensure that design responsible organizations have a design process robust enough to meet the safety and reliability requirements demanded by the aerospace industry. PURCHASING - requires that there are suitable controls over the organization's entire supply chain. PRODUCT REALISATION - to ensure that each phase of product realization, from planning to shipment, is tightly controlled to ensure the delivery of conforming product. PRODUCT MONITORING / MEASUREMENT - defines the requirements for product validation prior to shipment.       AS9110 - Requirements for Maintenance Organizations This standard is focused on the control of repair schemes and maintenance plans, configuration management, and the skills and qualifications necessary to perform tasks within the aerospace community. AS9120 - Aerospace Requirements for Stockist Distributors This standard addresses chain of custody, traceability and the control and availability of records.