This report summarizes what is already known about general aviation accidents in those two years: total numbers of accidents, fatal accidents, and fatalities, and tabulations of the categories and classes of aircraft involved, pilot qualifications, purposes of the accident flights, and light and weather conditions. It is intended to provide a more timely snapshot of recent GA safety while the National Transportation Safety Board completes its investigations. A detailed analysis of 2011’s accidents will be provided in the ASI’s 23rd Joseph T. Nall Report, with publication anticipated in the first quarter of 2014.
Slightly fewer accidents despite a modest increase in flight time reduced the accident rate for non-commercial fixed-wing flights from 6.60 per 100,000 hours in 2009 to 6.30 in 2010, a decrease of almost 5 percent. The non-commercial helicopter accident rate dropped nearly 30 percent thanks to a 22 percent reduction in the number of accidents and a 7 percent increase in flight time. Both their total rate of 5.29 accidents per 100,000 hours and their fatal rate of 1.07 fell below the comparable fixed-wing rates for the first time. Accident rates on commercial flights, both rotorcraft and fixed-wing, remained almost unchanged. However, the safety record of amateur-built and experimental light sport aircraft improved dramatically, with one-third fewer fatal accidents and 20 fewer accidents of all kinds than the year before.
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