A Subjective Rating Scale for Assessing Pilot Workload in Flight: A decade of Practical Use

Abstract

Despite the many techniques developed for evaluating pilot workload in flight, subjective assessment by experienced pilots is still the most reliable method by far. This report describes the design and development - with the help of practicing test pilots - of a ten-point rating scale. The scale uses a decision tree similar to that used by the Cooper-Harper Handling Qualities scale, and is based on the concept of spare capacity. Examples are given of its use by a large number of pilots in various flight trails and workload studies. Keywords: Test construction; Workload; Pilots; Flight; Decision making; Decision aids; ratings.

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