Introduction

(Fatigue is estimated to play a causalrole in 1 in 5 Class A mishaps.

(Significant cause of assets and life lost.

FOUO

7

Aeromedical Causal FactorsReported in Mishaps & HAZREPs

,+35 0% 18A;<?* 2+64+.-,-2 ;8E8 =CB@ 1C% /B>A 49BEE* .7FD '))&-2011

0 20 40 60 80 100 120 140

Other

Barotrauma

Alcohol/Caffeine

Heat/Cold/Dehydration

Hypoxia

Diet/Nutrition

Visual Illusions

Loss of Consciousness

Meds/Illnesses

Fatigue

Spatial Disorientation

Class A

Class B

Class C

HAZREP

Effects on flight performance

(Withdrawn mood

& Loss of sense of humor

& Less likely to converse

& Less likely to perform low-demand tasks

Factors influencing sleepiness

(Sleep loss

(Circadian rhythms

(Age

(Medication

(Alcohol

(Environment and work task

Effects on flight performance

(Many skills resistant to fatigue

& T/O, landing, rendezvous, bombing, etc.

& You feel bad, but do better than you think

( Increased reaction time

& Brain activity reduced

& Timing errors in response sequences

Effects on flight performance

(Reduced attention& Microsleeps

& Preoccupation with single tasks

& Reduced audiovisual scan

& Increased Errors

(Diminished memory& Forget peripheral tasks

& =GWGSU UP \PMF] JCDKU QCUUGSOT

Exxon Valdez q 00:15Bhopal q 01:00

Chernobyl q 01:23Kuwait H-46 Mishap q 02:33

Roosevelt Leyte Gulf q 02:52Three Mile Island q 04:00

HSL-48 Mishap q 05:31

The midnight to 0600window is a very

dangerous place to dobusiness!

Fatigue Countermeasures

(Adequate Sleep

(Sleep hygiene

(Napping

(Exercise

(Mission Planning

(Caffeine

(Pharmaceuticals

Combat Nap

(Naps increase performance

(Want to avoid sleep inertia

Sleep and Performance

(Managing fatigue requires managingsleep.

& BPV ECOOPU \DCOL] TMGGQ

& \>MGGQ FGDU] KT EVNVMCUKWG

(Sleep is the ONLY countermeasurewhich restores all aspects of humancognitive performance.

6<#

www.asma.orgKris M. Belland

AsMA President Elect 2015-16

Aerospace Medical Association