Glossary

Finished goods ratio

Finished goods ratio is an inventory KPI showing the share of inventory held as completed finished goods.

Core Aerospace Operations Execution Aerospace MES, Inventory Accuracy, and AOG Risk Reduction

Finished goods ratio is an inventory KPI that expresses finished goods inventory as a proportion of a defined inventory base, most commonly total inventory. It shows how much inventory is held as completed product rather than as raw material, components, or work in process.

A common form is finished goods inventory divided by total inventory, expressed as a percentage. The calculation may use value, quantity, weight, or another consistent measure, so the basis should be defined before comparing sites, periods, or systems.

In manufacturing systems, the finished goods ratio is used in production planning, inventory management, ERP reporting, and KPI frameworks such as ISO 22400-related operations metrics. It can help indicate inventory mix, demand imbalance, excess stock, or classification issues. It does not directly measure inventory accuracy; accuracy still depends on correct transactions, cycle counts, lot or serial control, and consistent status management across ERP, MES, and WMS records.

Finished goods should not be confused with physically complete items that are still on hold, under inspection, rejected, quarantined, or otherwise not available under the site’s inventory rules. Those status distinctions matter when the ratio is used for operational or quality-sensitive reporting.

Effective serialized part scanning and labeling in regulated plants depends on clear data ownership, robust label design, validated scanners, and disciplined procedures. Barcode or RFID technology alone is not sufficient; success hinges on integration quality with MES/ERP/QMS, practical human factors on the line, good rework/relabelling controls, and traceable change management.

What master data needs to be aligned before integrating MES and ERP?

Before integrating MES and ERP in a regulated, brownfield environment, you need alignment on core master data such as materials, BOMs, routings, resources, work centers, locations, customers, suppliers, units of measure, and status codes. Gaps, duplicates, and conflicting definitions must be resolved and governed, or the integration will propagate errors at scale and undermine traceability and validation.

What are typical integration methods between MES and ERP?

Typical MES–ERP integration uses a mix of file-based transfers, database views, web services/APIs, and message queues, often mediated by an ESB or iPaaS. In regulated plants, choices are constrained by validation burden, legacy systems, and downtime limits, so hybrid approaches and staged upgrades are more realistic than a clean, single pattern.

How can MES data help predict potential AOG events before they occur?

MES data can contribute to predicting potential AOG events by exposing patterns in production, repair, and configuration history that correlate with in‑service risk. However, this only works when MES is rigorously integrated with maintenance and reliability data, governed for data quality, and supported by validated analytics. It highlights risk; it does not guarantee AOG prevention.

Related Glossary

AOG Risk

The probability and impact that an aircraft-on-ground (AOG) event will occur due to failures, delays, or shortages in operations or supply.