United States Department of Transportation
i
Human Factors Experiments for Data Link: Interim Report No. 6.: An Evaluation of Data Link Input/Output Devices Using Airline Flight Simulators
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1975-11-01
[PDF-8.83 MB]
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Abstract:An evaluation of candidate cockpit Data Link input/output (I/O) devices using airline flight simulators was conducted. The opinions of airline pilots regarding Air Traffic Control by Data Link were obtained. Three full complements of I/O devices were evaluated. The complements were differentiated by the presence of (1) a visual short message ATC (SMATC) display, (2) a voice synthesizer (Vosyn), and (3) a combination of SMATC and Vosyn. An experimental design was developed to evaluate these complements by means of three scenarios in both DC-9 and B-727 airline flight simulators. The experimental setup provided for the collection of quantitative data in the form of message response times and communications events. Qualitative data consisting of questionnaire responses and comments were obtained. The visual SMATC display was more desirable than the Vosyn, the Vosyn/SMATC combination, or conventional voice during ground, low en route, and high en route flight. Conventional voice was favored during local control and was ranked equally with the SMATC during arrival and departure. The SMATC provided the fastest comprehension. No major differences in Data Link were found between two and three crew member simulators. The loss of essential other aircraft, weather advisory, and terminal routing information caused by the presumed selective address capability will necessitate a compensating ATC improvement or alternative before an ATC system based solely on Data Link will receive wide acceptance by airline pilots.
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