AvSM Lesson 6 Flashcards
the amount of work to be done by someone or something.
WORKLOAD
are necessary for us to achieve our optimum performance,
arousal and alertness
demonstrates that our performance is directly related to the level of
arousal.
The Yerkes Dodson curve
Workload is a relatively subjective measure (experienced differently by different
people) and is affected by:
The nature of the task
The circumstances under which the task is performed
The individual and their situation
such as its physical and mental demands
the nature of the task
the standard of performance required, the time available to accomplish the task, and the prevailing environmental factors
The circumstances under which the task is performed
their skills both physical and mental; their experience, familiarity with the task; their health and fitness levels; and their emotional state.
The individual and their situation
occurs when there is a lot of work to be done.
WORK OVERLOAD
CAUSES OF HIGH WORKLOAD
Poor task planning;
Unexpected events;
Inadequate manning/high tempo
Changing task requirements;
System design/access problems;
System/task complexity
Ignoring some signals or responsibilities that are not seen as immediately relevant or necessary
Omission and Filtering
Limited Capability for the consideration of other possibilities, or to process information correctly
Reduced ability to think logically
delaying required actions in the hope you will be able to catch up as the task progresses
queuing
The tendency to automatically confirm a decision made, ignoring other information to the contrary
Confirmation bias
Near enough becomes good enough
Approximation
Referring to a previously well-learned procedure or action which may or may not be appropriate for the current task
Regression
result from simple or very
boring, repetitive tasks, or
indeed from a lack of tasks to do.
WORK UNDERLOAD
organize and execute work plans relating to all technical aspects of aircraft maintenance. Their goal would be to ensure minimum aircraft downtime and optimum use of facilities and
human resources.
maintenance planning
is the state of feeling very tired, weary or sleepy resulting from
insufficient sleep, prolonged mental or physical work, or extended periods of stress or anxiety.
Fatigue
two types of sleep related fatigue
aCUTE AND cHRONIC
this is generally only short-term and can be remedied
with a good night’s sleep
Acute
a longer-term problem, as there is usually a buildup of
sleep deprivation.
Chronic
is a brief moment sleep (generally between 2-30
seconds)
Micro sleep
Two common types of fatigue related errors in
maintenance are:
Memory failures
Failures to notice defects or problems
difficulty detecting defects during inspections, and may be less likely to
notice problems as a result of inattention or poor concentration.
Failures to notice defects or problems
Fatigued AMTs are more likely to forget to perform routine actions, such as replacing oil caps, and are more susceptible to distraction and resulting memory lapses.
Memory failures
Fatigue is caused by a combination of two processes—
sleep debt
circadian rhythms.
Amount of sleep you should be getting versus the amount of sleep you actually get
sleep debt
Medical conditions that can cause sleep disruption include the following
Insomnia
Restless legs syndrome (RLS)
Periodic Limb movements (PLM)
Sleep apnea
An inability to get to sleep, or a difficulty staying
asleep.
Insomnia
A disorder that causes a strong urge to move
your legs.
Restless legs syndrome (RLS)
This urge to move often occurs with strange
and unpleasant feelings such as creeping,
tingling, or burning.
Restless legs syndrome (RLS)
Involuntary leg movements while
asleep. The movements often
disrupt sleep and may cause the
person to wake up
Periodic limb movements (PLM)
A disorder in which breathing pauses or
becomes shallow during sleep
Sleep apnea
24 hour rhythms in
our body’s physiology, biochemistry and behavior.
CIRCADIAN RHYTHMS
The period from around 2am–5am when we would normally be asleep
A time when mental functioning is generally at its worst.
increase the odds of errors, particularly absentminded slips and memory lapses.
Even people without a sleep debt find that their work performance is affected by
fatigue during the WOCL, but a sleep debt will intensify the negative effects of the
WOCL.
Window of Circadian Low (WOCL),
experience a brief period of confusion, poor
memory and grogginess. This effect, which can
last up to 15 minutes
SLEEP INERTIA (AKA “SLEEP DRUNKENNESS”)
STRATEGIES TO DEAL WITH FATIGUE
GET MORE SLEEP!
describes a series of organic
chemicals, but only one type, ethyl alcohol or ethanol, is found in drinks intended for human consumption.
ALCOHOL
is any substance (solid, liquid or gas) that
brings about physical and/or psychological
changes.
DRUGS
slows down the functions of the central nervous system.
can cause the user to feel more relaxed and less inhibited. In larger
quantities they can cause unconsciousness, vomiting, and even death
Depressants
Depressants
Cannabis
Some solvents and inhalants, many of
which are common household products.
Opiates and opioids, including heroin,
morphine, codeine, and methadone
act on the central nervous system to speed up the messages to and from the brain.
They can make the user feel more awake, alert, or confident. _________- increase heart
rate, body temperature, and blood pressure.
effects include reduced appetite, dilated pupils, talkativeness, agitation, and sleep
disturbance.
Stimulants
Stimulants
Methamphetamines
Cocaine
Ecstasy
People who have taken them may believe they see or hear things
that aren’t really there, or what they do see may be distorted in
some way
increased activity, talking or laughing, jaw clenching, sweating,
panic, paranoia, loss of contact with reality, irrational or bizarre
behavior, stomach cramps, and nausea.
Hallucinogens
Hallucinogens
Datura
Magic mushrooms
Cannabis
Ecstasy .
