Survey of pilots' attitudes and opinions about drinking and flying.

A mailed questionnaire was used to obtain biographic, attitude, and reported behavioral data from pilots with regard to consumption of alcoholic beverages and flying. A 40.8% return of 835 mailings was obtained. Only 12 pilots reported having flown after drinking. Approximately 50% of the respondents indicated it would be safe to fly within 4 h after drinking some amount of alcoholic beverage. Based upon alcohol absorption and oxidation rates, it was estimated that 27-32% of the respondents considered flying after drinking, within a time period which would result in a 15mg% BAC or higher, to be safe behavior. Discriminant analysis showed liquor consumption and opinions regarding number of mixed drinks which could safely be consumed within 1 h before flying would correctly classify 67.5% of the respondents in terms of attitude toward drinking and flying.