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Evidence from Resource 1 piece of evidence from this resource.

Speyer, J.J., Fort, A., Fouillot, J.P., & Blomberg, R.D. (1987). Assessing pilot workload for minimum crew certification. The Practical Assessment of Pilot Workload, 90-115. AGARDograph No. 282. London: North Atlantic Treaty Organization Advisory Group for Aerospace Research and Development.

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  2. Evidence Type: Excerpt from Experiment
    Evidence: "It appears from ... [the] graphic plots that the results of each aircraft under certification were generally indicating decreased taskload burden for each crewmember when compared to their referenced aircraft. Burden figures for CM2 are always much higher than for CM1 as the former s carrying out the bulk of the system management work. With regard to the weighted average taskload the individual crewmember figures for the aircraft under certification were generally equivalent to their reference aircraft. More important, however, was the fact that they stay well inside the satisfactory range of the static taskload scale. It is concluded that there are less tasks on the new aircraft and that they are easy to execute. Several other ways exist to graphically represent the results of the Static Taskload Analysis one of which being Normalized Principal Components Analysis of the taskload matrices. ... The objective of normalized principal components analysis is to provide a synthetic representation of the information contained in a matrix of p continuous variables and n observations. ... In this particular way of representation we used procedure matrices whose observation points corresponded with the burden data for normal, abnormal and emergency procedures of both aircraft to be compared. The variable corresponded with the 6 elementary activities in a task. Differentiation of the two aircraft to be compared (the DC-9 and the A300 FF) was done by attributing different codes to the projected observation points. ... One can get an idea of the homogeneity of procedures or of the homogeneity of action burden data associated with the procedures whether the subclouds are clustered or dispersed. In essence this method indicated that as a whole the elementary activities normal procedures and 10 abnormal/emergency procedures. ... Task analyses of system management activities were performed for each crew member of each aircraft with a task breakdown into basic actions (look, observe, monitor, reach, operate and monitor) on the A300 FF are more homogenously grouped and centered and therefore less demanding that on the DC-9." (page 475, 478)
    Issue: automation may adversely affect pilot workload (Issue #79) See Issue details
    Strength: -1
    Aircraft: A300FF
    Equipment: automation
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