Anbessie A. Yitbarek - Renton WA,
I-Li Lu - Issaquah WA,
Ranjan K. Paul - Sammamish WA,
Farshad Doulatshahi - Mercer Island WA,
Elizabeth A. Whalen - Seattle WA,
Shuying Zhu - Seattle WA,
Peter A. Fiddler - Seattle WA,
A computer implemented method, apparatus, and computer program product for identifying an interval for performing a maintenance task. The process retrieves scheduled maintenance data and un-scheduled in-service maintenance data for a given apparatus type. The process maps the un-scheduled in-service maintenance data to the scheduled maintenance data for the given apparatus type to form mapped maintenance data. The process performs a statistical analysis on the mapped maintenance data. The process identifies an optimal interval for performing the maintenance task based on a result of the statistical analysis to form a recommended maintenance interval.