A Study on Civil Aviation Pilots Sleep Status Change on Ultra-Long-Range Routes

Sleep status is the most intuitive factor that causes fatigue and causes unsafe events in civil aviation. This study uses scientific sleep monitoring tools HUAWEI Watch GT2 Pro ECG to collect and evaluate the pilot's sleep duration and sleep quality, and Karolinska Sleepiness Scale (KSS) to estimate subjective alertness. By using these tools on the real ultra-long-range routes and applying basic descriptive statistics method, it found that the flight crew can get enough sleep and better sleep quality three days before the flight, and sleep duration and quality were restored after landing in three days. In addition, flight crews are subjectively alert while on duty on ultra-long-haul flights.