Download or read book Crew Factors in Flight Operations 9 written by National Aeronautics and Space Adm Nasa and published by . This book was released on 2020-07 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study examined the effectiveness of a planned cockpit rest period to improve alertness and performance in long-haul flight operations. The Rest Group (12 crew members) was allowed a planned 40 minute rest period during the low workload, cruise portion of the flight, while the No-Rest Group (9 crew members) had a 40 minute planned control period when they maintained usual flight activities. Measures used in the study included continuous ambulatory recordings of brain wave and eye movement activity, a reaction time/vigilance task, a wrist activity monitor, in-flight fatigue and alertness ratings, a daily log for noting sleep periods, meals, exercise, flight and duty periods, and the NASA Background Questionnaire. The Rest Group pilots slept on 93 percent of the opportunities, falling asleep in 5.6 minutes and sleeping for 25.8 minutes. This nap was associated with improved physiological alertness and performance compared to the No-Rest Group. The benefits of the nap were observed through the critical descent and landing phases of flight. The nap did not affect layover sleep or the cumulative sleep debt. The nap procedures were implemented with minimal disruption to usual flight operations and there were no reported or identified concerns regarding safety. Rosekind, Mark R. and Graeber, R. Curtis and Dinges, David F. and Connell, Linda J. and Rountree, Michael S. and Spinweber, Cheryl L. and Gillen, Kelly A. Ames Research Center NASA-TM-108839, A-94134, NAS 1.15:108839, DOT/FAA/92/24 RTOP 505-64-53 ALERTNESS; AVIATION PSYCHOLOGY; FLIGHT CREWS; FLIGHT FATIGUE; FLIGHT OPERATIONS; PILOT PERFORMANCE; SLEEP; WORKLOADS (PSYCHOPHYSIOLOGY); AIRCRAFT LANDING; EYE MOVEMENTS; FLIGHT SAFETY; FLIGHT STRESS (BIOLOGY); PHYSICAL EXERCISE; PHYSIOLOGICAL TESTS