4.1.1. In order to validate production equipment and tooling, the items shall be built or installed and put through at least one trial operation; this usually means producing a part using the item or software, and then sending the resulting part to [QC or QA Preferred Term] for an inspection of the dimensions created or impacted by the hardware or software in question; this is typically through a first piece inspection, but could also be a full First Article. In some cases, multiple parts may be manufactured and inspected to ensure validation, or multiple production runs may be required at various settings or over a range of criteria.