Prediction of Operator Performance for Sonar Maintenance

The effect of single or multiple faults on performance of operators operating in a realistic maintenance situation was investigated. The task was fault location in the display portion of a sonar system. Analysis of repair times shows that multiple task performance can be considered as a simple combination of single task performance regardless of the number of operators. Multiple operator performance is not exactly a simple combination of single operator performance, but the assumption is reasonable for model development.