Joint Forces Memorandum

The Joint Forces Memorandum of Agreement on Operational Suitability Terminology and Definitions to be Used in Operational Test and Evaluation (O & E) defines several Operational Suitability metrics that are supplied (under different names) within eXpress. The following table lists the applicable metrics in this document and their eXpress equivalents.

Metrics	Services	eXpress Equivalent	eXpress Report
Mean Time Between Failures	Air Force	Mean Time Between Failures	Detection Order Report
Percent BIT Fault Detection	Air Force	Total Probability Detected	Detection Order Report
Percent Fault Isolation	Air Force	Pctg. (%) column in Isolation Probabilities Using Testing Only	Fault Isolation Report
Mean Corrective Maintenance Time	Marine Corp	Expected Time to Repair	Fault Isolation Report
Mean Time to Repair	Army, Air Force	Expected Time to Repair	Fault Isolation Report
Mean Repair Time	Air Force	Expected Time to Repair	Fault Isolation Report
Maximum Corrective Maintenance Time	Marine Corp	Maximum Time to Repair	Fault Isolation Report
Maximum Time to Repair	Army	Maximum Time to Repair	Fault Isolation Report
Mean Time to Fault Locate	Marine Corp	Expected Time to Isolate	Fault Isolation Report
Mean Time to Troubleshoot	Air Force	Expected Time to Isolate	Fault Isolation Report
Maintenance Ratio	Army, Navy, Marine Corp	Maintenance Ratio	Fault Isolation Report
Inherent Availability	Marine Corp	Inherent Availability	Fault Isolation Report

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Joint Forces Memorandum