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The Effect of Instrument Approach Procedure Chart Design on Pilot Search Speed and Response Accuracy - Flight Test Results

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English


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  • Edition:
    Final Report January 1994 - December 1994
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  • Abstract:
    Instrument approach procedure (IAP) charts can be densely packed with information. This high information density can ; make information difficult to find, particularly in a poorly lit cockpit during turbulence. The Voipe Center's Cockpit ; Hunan Factors Program conducted a series of evaluations to format IAP chart information to more closely conform to the ; way pilots actually use the information. All of this work has contributed to the evolution of the Voipe prototype IAP ; chart format. The prototype's major design features are the briefing strip and iconic missed approach procedure ; instructions. The briefing strip consists of three rows of tabularized information at the top of the chart. This feature ; is designed primarily for use in preparing for the approach. Each Information element is given in the order in which it ; will be used. The pilot no longer has to search through the entire chart to assemble this data. In the profile view, the ; "up and out" portion of the missed approach instructions is depicted in icons rather than text. This critical ; information is more easily located than if it were embedded in text. The objective of this study was to determine if the ; prototype IAP chart format would allow pilots to find information faster and more accurately during actual flight. Ten ; licensed pilots rated for instrument flight participated as subjects in this experiment. Each of the approaches were ; depicted in two chart formats: National Ocean Service (NOS) and the Voipe prototype. ; Pilots took advantage of the prototype's briefing strip to search for information to answer questions. They found ; Information faster on the prototype chart than on the NOS chart. No difference was found between the accuracy of the ; answers given when pilots used the prototype and when they used the H0S format. Pilots found information regarding the ; "up and out" portion of the missed approach instructions faster when they used the iconic missed approach instructions ; on the prototype chart than when they used text instructions on the H0S chart. All pilots preferred the prototype format ; for executing the missed approach because of the iconic instructions. Most pilots preferred the prototype format for ; studying for the approach. None of the pilots preferred the NOS format for executing any approach phase.
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    PDF
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    Filetype[PDF - 4.98 MB]
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    urn:sha-512:5ea906c70ceac9f5512f5a939f36a3d329330a5ecba236e484feec7b84303c884a6f37e97a3ed52b366401990b9e74bcd3351576bd64d0dcea1fe9222d07e11b
File Language:
English
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