scope:

Use/Relationship: The Human Engineering Design Approach Document-Maintainer (HEDADM) describes the equipment and software that interface with maintainers, excluding depot-level maintenance. It also describes the maintainer-related software used by maintainers. This data item description (DID) provides a source of data to evaluate the extent to which equipment and software interfacing with maintainers meets human performance requirements and human engineering criteria; it may also serve as source data for the development of technical publications, maintenance training, and supportability engineering. The Maintainer Interface Matrix provides summary information regarding incorporation of human engineering features into system design in support of contract milestones (e.g., Preliminary Design Review, Critical Design Review).

a. For the purposes of this DID, "maintainer" is a general term which includes any person that performs a maintenance task (e.g., a driver changing a flat tire, a crewmember filling fluid levels).

b. This DID contains the format, content, and intended use information for the data deliverable resulting from the work described in MIL-STD-46855 and applicable tasks delineated in the solicitation.

c. This DID supersedes DI-HFAC-80747B.