Factors associated with pilot fatality in work-related aircraft crashes, Alaska, 1990-1999

Abstract

Work-related aircraft crashes are the leading cause of occupational fatality in Alaska, with civilian pilots having the highest fatality rate (410/100,000/year). To identify factors affecting survivability, the authors examined work-related aircraft crashes that occurred in Alaska in the 1990s (1990-1999), comparing crashes with pilot fatalities to crashes in which the pilot survived. Using data from National Transportation Safety Board reports, the authors carried out logistic regression analysis with the following variables: age, flight experience, use of a shoulder restraint, weather conditions (visual flight vs. instrument flight), light conditions (daylight vs. darkness), type of aircraft (airplane vs. helicopter), postcrash fire, crash location (airport vs. elsewhere), and state of residence. In the main-effects model, significant associations were found between fatality and postcrash fire (adjusted odds ratio (AOR) = 6.43, 95% confidence interval (Cl): 2.38, 17.37), poor weather (AOR = 4.11, 95% Ch 2.15, 7.87), and non-Alaska resident status (AOR = 2.10, 95% Cl: 1.05, 4.20). Protective effects were seen for shoulder restraint use (AOR = 0.40, 95% Cl: 0.21, 0.77) and daylight versus darkness (AOR = 0.50, 95% Cl: 0.25, 0.99). The finding that state of residence was associated with survivability offers new information on pilot survivability in work-related aircraft crashes in Alaska. These results may be useful in targeting safety interventions for pilots who fly occupationally in Alaska or in similar environments.