How well do pilots sleep during long-haul flights?

Area of Science:

• Aviation Psychology
• Sleep Science
• Occupational Health

Background:

• Shift work in safety-critical industries necessitates adequate sleep for optimal performance.
• Long-haul airline pilots face challenges balancing sleep needs with flight schedules, often relying on in-flight sleep.
• Understanding the restorative value of in-flight sleep is crucial for pilot well-being and aviation safety.

Purpose of the Study:

• To quantify and compare the restorative effects of in-flight sleep versus traditional bed sleep for long-haul airline pilots.
• To assess the impact of in-flight sleep opportunities on pilot sleep/wake behavior during long-haul operations.

Main Methods:

• Utilized a mixed-methods approach combining self-report sleep diaries and wrist activity monitors.
• Monitored the sleep/wake patterns of 301 long-haul airline pilots over a minimum two-week period.
• Compared sleep duration and recovery metrics between in-flight sleep and duration-matched bed sleep.

Main Results:

• In-flight sleep opportunities provided a similar duration of sleep compared to bed sleep.
• However, in-flight sleep resulted in only 70% of the recovery achieved from duration-matched bed sleep.
• Pilot sleep/wake behavior data highlighted significant differences in sleep quality and restorative value.

Conclusions:

• In-flight sleep is less restorative than bed sleep for long-haul airline pilots, offering only 70% of the recovery.
• Airlines should consider interventions to enhance the quality and/or quantity of sleep obtained by pilots during flights.
• Improving in-flight sleep is essential for maintaining pilot alertness, performance, and overall aviation safety.