(3) To Reduce Detection (D) Ranking: The preferred method is the use of error/mistake proofing. An increase in design validation/verification actions should result in a reduction of detection ranking only. In some cases, a design change to a specific part may be required to increase the likelihood of detection (i.e., reduce the detection ranking). Additionally, the following should be considered:
• Design of Experiments (particularly when multiple or interactive causes of a failure mode are present)
• Revised test plan