scope:

Use/relationship: A critical task is one requiring human performance which, if not accomplished in accordance with system requirements, will likely have adverse effects on cost, system reliability, efficiency, effectiveness, or safety. The Critical Task Analysis Report (CTAR) describes the results of analyses of critical tasks performed by the end user and provides a basis for identifying high risk tasks affecting human-system performance, mission accomplishment, system suitability, and safety. The analyses and results described support verification that human engineering technical risks have been identified, minimized, or mitigated and that human-system performance has been adequately addressed from early design development through test and evaluation of the system, equipment, or facility.

a. This data item description (DID) contains the format and content preparation instructions for the data product generated by the specific and discrete task requirement as delineated in the contract.

b. Terms are defined in accordance with MIL-HDBK-1908.

c. This DID supersedes DI-HFAC-81399A.