Glossary Term: Engineering Change Order (ECO)

The Engineering Change Order (ECO) is the documentation outlining the proposed change to the design, lists the product or parts affected and requests review and approval from the manufacturers. The ECO is used to make modifications to material, assemblies and subassemblies and other types of product information.

An engineering change order is also known as an engineering change notice, the document outlining the changes in production and product specifications to be used in the manufacturing process.

An ECO is issued when an error is found and corrective action is taken. It is also common for an ECO to be issued in technology manufacturing when an electronic component becomes obsolete or reaches the end of its life cycle.

An ECO may also be issued to reduce production costs when more affordable materials or components become available to be used in manufacturing after the initial production cycle.

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