Can avionic testability requirements be enforced?

Theoretically avionic testability can be specified, levied contractually, designed and integrated into hardware, and demonstrated. The intent of this paper is not to identify how we can achieve test ability but how we can hope to get the maximum testability that is practical by a methodology of enforcement and control from the time the avionics procurement is envisioned through the design, de velopment, and acceptance. The review and con currence in testability is accomplished through the data submittals from the avionics supplier. Enforcement is directly related to the type of data required, when it is required, the formats specified, and our ability to get exactly what was contractually required. The optimum method of achieving this end is to have support engineering personnel participate through the stages of data preparation, review, and resubmittal. The parti cipation is via concurrent reviews in conjunction with the avionics design review cycle, and by directing the contractor to include specific test ability requirements for each UUT on a case by case basis.