5-3 Concept & Requirements Definition
            
    
                        Human Factors in the FAA Acquisition Ma...
                             5. Concepts & Requirements Definition (...
                        
    Conduct HF Assessments to Support Refinement of Concepts. As indicated in crdguidelines.pdf (faa.gov): “The alternatives developed during the CRD phase will be high-level concepts, and thus referred to as preliminary alternative descriptions.”
These alternati...