Effects of In-Flight Countermeasures to Mitigate Fatigue Risks in Aviation

Fatigue is a frequent phenomenon for pilots doing shift work and working in changing time zones. Napping or increased cockpit lighting, so-called in-flight countermeasures, may help pilots mitigate the symptoms of acute fatigue. This study investigated the impact of napping on sleep quality and the effect of in-flight countermeasures on how often pilots notice fatigue symptoms when feeling tired. In total, 106 German-speaking pilots participated in an online survey. The results showed a medium correlation between napping and improved sleep quality (r = .32) and a low-to-medium correlation between a frequent usage of in-flight countermeasures and less acute physical fatigue symptoms (r = −.22). Officers indicate using napping more often than captains do (d = .70). Further research should investigate how cabin crew members can benefit from mitigating measures.