Stores the tasks, task groups, and associated repair times to use when performing a maintainability prediction. A Maintainability Task Library file is the only Maintainability support file required by all three MIL-HDBK-472 procedures. For more information, see Maintainability Task Library Files.

Stores FD&I (fault detection and isolation) outputs to use if they are selected for repair definitions instead of tasks. Each output is associated with the tasks or task groups to perform when that output occurs. For more information, see Maintainability FD&I Library Files.

Stores the maintainability groups to use when performing MIL-HDBK-472 5A calculations. For more information, see Maintainability Groups File.