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Updated: Dec 11, 2025

Collecting Sleep, Circadian, Fatigue, and Performance Data in Complex Operational Environments
Published on: August 8, 2019
The relationship between workload, performance and fatigue in a short-haul airline
Lucia Arsintescu1, Ravi Chachad1, Kevin B Gregory2
1Fatigue Countermeasures Laboratory, San Jose State University Research Foundation, Moffett Field, CA, USA.
Abstract:
The aim of this study was to determine the relationship between pilot workload, performance, subjective fatigue, sleep duration, number of sectors and flight duration during short-haul operations. Ninety pilots completed a NASA Task Load Index, Psychomotor Vigilance Task and a Samn-Perelli fatigue scale on top-of-descent of each flight and wore an activity monitor throughout the study. Weak, but significant, correlations were revealed between workload and all factors. Subjective fatigue, number of sectors and lapses were significant predictors of workload. Pilots reported higher workload when fatigue increased, the number of sectors were higher, and objective performance was worse.
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