Safety
Australian Study Examines Pilot Incapacitation
Smaller airline and general aviation operations had fewer events, but a wider variety of causes was behind the incapacitations.

Between 2010 and 2014, there were on average 23 cases of pilot incapacitation involving VH-registered airplanes worldwide, according to a study by the Australian Transportation Safety Board. Nearly three-quarters of the events happened in major airline operations—about one in every 34,000 flights—and the main cause was gastrointestinal illness; laser strikes were the next most common. The events usually had minimal effect on these multi-crew flights.