An engineering change notice is a form that communicates the details of an approved change to someone who needs to know about the change. It often authorizes a notice recipient to make a change to the design or process, which may include purchasing new materials.

All implemented engineering changes (ECN) and major process changes (PCN's) may increment the revision tracking digits within the barcode label as agreed to by Xplore.

An engineering change order (ECO) or an engineering change notice (ECN) is a document that begins the process for making adaptations or corrections during a product's lifecycle. It plays a critical role in engineering and product development.

Definition. At the basic level, an engineering change is a is a process used to implement changes to components or products. The requirement for engineering change arises from the necessity that designs that evolve over the lifetime of the product.

An Engineering Change Notice (ECN) is a document authorizing and recording design changes throughout the prototyping and life-cycle phases of a product. ECN documentation contains the justification for changes made to a component or system once the initial design is complete.

What is the purpose of an ECN? An Engineering Change Notice (ECN) is a document that authorizes and records design modifications made to a product during its prototype and lifecycle stages. After the basic design is complete, ECN documentation offers the reasoning for changes made to a component or system.

Engineering change request (ECR) — A change request listing proposed improvements or problems with components or assemblies. Manufacturing change request (MCR) — A change request specifying changes to the manufacturing process or equipment.