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The purpose of this study was to identify the circumstances associated with encounters with adverse weather by general aviation pilots. Self-report data were analyzed for 224 pilots who completed an internet-based questionnaire, and who reported their principal residence as North America. Three groups were identified on the basis of their weather encounters: No-Weather, Near-Weather, and In-Weather. The data provide a description of the demographic characteristics of the pilots, along with details of the events and conditions that existed prior to and immediately following their in-flight weather encounters. Analyses were also conducted comparing the demographic and other characteristics of the three pilot groups. The descriptive data were found to be informative and of potential application in intervention development. Comparisons of the three groups, however, revealed very few statistically significant differences.