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Performance specifications for aircraft instrumentation utilizing color CRT (Cathode Ray Tube) displays should be based upon recognized human factors and cockpit environmental requirements. The complexity of these requirements can result in the development of hardware with specifications derived from a deficient human factors data base. The consequences are potentially inadequate performance under demanding environmental conditions or increased cost and reduced life penalties resulting from deficient or overly conservative specifications. Dependence on this new technology for information critical to flight safety should be tempered with redundant conventional instrumentation until performance standardization is achieved.