Inheritance Review of the Mars Phoenix Flight System

Despite the unusually large percentage of the Phoenix design and hardware that was inherited from previous Mars spaceflight projects, the format used for Phoenix project system and subsystem Inheritance Reviews (IRs) proved adequate to mitigate the risk within technical and programmatic constraints. A mission assurance checklist provided acceptance criteria to validate the flight worthiness of each subsystem. Consider using the Phoenix Inheritance Review format as a model for future missions that feature substantial inheritance. Plan carefully for the collection, analysis, and eventual archiving of records documenting the system and subsystem pedigree.

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