5.6.4                 Hardness assurance post-CDR

a.              For radiation margin issues still open or identified after CDR, an analysis shall be performed to evaluate:

1.              Potential solutions.

2.              The functioning of the part in the context of a worst-case analysis.

3.              The implications at sub-system and system level.

NOTE 1      Problems identified or remaining close to or after CDR can be expensive to rectify.

NOTE 2      The pass/fail criteria in testing can be unrelated, or not closely related, to functional failure. If a part’s parameter is out of spec after testing, it can be that the parameter is not important in the equipment worst-case analysis.