Supplier shall conduct control test examinations on this item or its sub-components in accordance with the requirements of the technical data package when a control test line item is included on this Purchase Order that requires the delivery of the final test certification. The absence of this line item indicates that no control test has been contracted or is required for this Purchase Order. Specific supplier instructions and requirements for control test (s) and reports are contained within the attached QCS-4A. Hardware shipment prior to control test approval is not allowed.