Product designers must integrate all information about processes,
tools, machines, tasks, and human operators to generate a
design that is acceptable to all parties involved. Maintainability
design is a major concern in the product design process. Welldesigned
maintainability can ensure service dependability, reduce
the life cycle cost of the product, and improve comfort during
maintenance. As most maintenance activities are performed by
maintainers, issues related to human factors/ergonomics (HFE)
should be considered in the maintainability design. However, while
completing the design task, maintainability designers often have
difficulty incorporating ergonomics information about human operators
into their designs