Accession Number:

ADA265826

Title:

Work/Rest Schedules and Performance of F/A-18 Aviators during Fleet Exercise 1992,

Descriptive Note:

Corporate Author:

NAVAL AEROSPACE MEDICAL RESEARCH LAB PENSACOLA FL

Personal Author(s):

Report Date:

1993-04-01

Pagination or Media Count:

29.0

Abstract:

As a continuation of our previous work during Operation Desert ShieldStorm, we examined the effect a fleet exercise has on the workrest patterns, fatigue, and cognitive performance of FA-18 aviators. For 10 days during Fleet Exercise 1992, 25 pilots from VFA-81 and VFA-83 completed daily workrest logs while performing their usual tasks. Subjective measure of fatigue, quality of rest, and sleep need were also collected. A subset of these FA-18 pilots completed a brief battery of cognitive tasks as soon before flying as possible and again after the flight debrief. As a group, the pilots were adequately rested with little or no problem sleeping, and they operated on a typical workrest schedule for deployed FA-18 aviators. However, in some instances during which late night missions were flown, sleep onset was delayed, coupled with shorter sleep periods and additional sleep problems. Several work rest and flight related parameters were related to subjective measures of aircrew combat readiness, including 1 flight quartile, 2 number and order of flights per day, 3 flight duration, 4 flight hours 72 h before a mission, 5 total work 24 h before a mission, 6 total sleep 12 h before a mission, and 7 total hours continuously awake before a mission. All seven variables significantly contributed to a multiple regression model derived using subjective strike delay, accounting for 51 percent of the variance. Moreover, statistically significant changes were observed from pre-to postflight on a fatigue-sensitive reaction time task. Circadian factors, Cognitive performance, Fatigue, Workrest cycles

Subject Categories:

  • Military Aircraft Operations
  • Medicine and Medical Research
  • Stress Physiology
  • Military Forces and Organizations

Distribution Statement:

APPROVED FOR PUBLIC RELEASE