How to reuse certification evidence in a MOSAIC program

The decision behind this topic

For established aircraft manufacturers, the useful question is not simply what MOSAIC says. The work is capturing reuse savings while protecting technical validity. The management decision is which evidence remains applicable to the requirement, configuration, and standards baseline. That requires an aircraft-specific record, not a generic interpretation copied into a schedule.

A credible program distinguishes confirmed requirements from assumptions, ties each conclusion to the configuration it covers, and gives unresolved items an owner and a decision date. This is especially important when prior certification work, supplier evidence, or commercial forecasts are being reused in a new U.S. context.

Evidence to put on the table

A practical way to proceed

1. 1

   score evidence for direct, conditional, or no reuse

2. 2

   document bridging analyses and limitations

3. 3

   retest when applicability cannot be defended

The output should be a traceable recommendation with conditions, not an unsupported yes or no. Where evidence is incomplete, show the closure method, cost and schedule exposure, and the event that will change the decision.