ERP

ISA‑95 is an international standard that defines a common model and terminology for integrating enterprise business systems (like ERP) with manufacturing and control systems (like MES and SCADA). It structures manufacturing activities into levels, helping reduce integration risk, ambiguity, and custom engineering when connecting IT and OT systems.

MES can contribute to lower safety stock, but only when underlying process stability, data quality, and planning integration are already strong. In many regulated, brownfield plants, MES initially exposes variability and data gaps that justify existing buffers. Stock reductions are gradual, validated changes, not an automatic outcome of MES deployment.

Extending a manufacturing KPI framework to tier-1 and tier-2 suppliers requires careful scoping, common definitions, contractual alignment, and pragmatic data integration. You typically cannot just push your internal dashboards outward. Instead, you need a staged model, clear data-sharing rules, validation of supplier data, and contingency plans for uneven system maturity across the supply base.

ERP is necessary in aerospace, but it is not sufficient on its own for execution, traceability, and compliance. Common gaps appear around detailed work execution control, digital travelers and work instructions, AS9100/AS9102 evidence, real-time quality and NCR workflows, configuration control, and robust as-built genealogy. These gaps are amplified in brownfield plants with mixed systems, legacy equipment, and strict validation and change-control requirements.