Critical item
BS EN 9145 defines a critical item (CI) as: “Those items (e.g., functions, parts, software, characteristics, processes) having significant effect on the product realization and use of the product; including safety, performance, form, fit, function, producibility, service life, etc.; that require specific actions to ensure they are adequately managed.”
Ref “Aerospace series - Requirements for advanced product quality planning and production part approval process,” British Standards Institution, BS EN 9145, 2018.
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