This book was written based on the doctorate dissertation ÒExamining the Duplication of Flight Test Data Center ©Ó of this author which studied the cost of post-flight data system duplication. Studied was why aerospace companies continue to duplicate PFP data centers, comparison to non-aerospace companies, the cost involved in equipment, and multiple relocations affecting FTEs. The research was performed from 2008 to 2011 and is applicable today.