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WorksheetsHuman Factors and Safety Quiz
Total questions: 80
Worksheet time: 40mins
What does ‘E’ stand for in the SHELL model?
Environment
Education
Experience
According to the document, human error in maintenance is responsible for what percentage of aircraft accidents?
70-80%
20-30%
10-40%
50db
Which of the following disciplines is concerned with matching machines to humans using size and reach?
Anthropometry
Cognitive Science
Organizational Science
MEDA
"Anything that can go wrong, will go wrong” refers to:
Murphy’s Law
Positive Stress
Negative Stress
Attention Deteriorates
What is the term for the eye’s ability to focus on objects at various distances?
Accommodation
Attention
Focus
Vision
At what decibel level is hearing protection legally required in many countries?
85 db
90 db
80 db
75 db
If there is an immediate reaction which eliminates the stress, you feel good.”I’ve done it!” We can call this type of stress as
Positive Stress
Negative Stress
Neutral Stress
Acute Stress
How people behave in relation to safety and risk when no one is watching is known as
Safety culture
Complacency
Behavior
Risk Management
Which one is not true regarding the effect of fatigue?
Fatigue increases your ability to solve problems.
Fatigue slows your reaction time.
Fatigue affects judgment.
Fatigue can lead to errors.
Human beings have lowest level of alertness around
between 1am and 3 am
early in the shift
during the middle of the shift
late in the shift
The sound wave which you cannot hear (<20Hz), but which can damage internal organs (e.g. kidneys) generated by engine is
Infra sonic wave
Ultrasonic wave
Sound wave
Noise
When working with complex systems,
always stick to the manufacturer‘s instructions, written procedures and reference materials
ignore the instructions
follow your intuition
ask for help
What is the best method to confirm a message has been understood correctly?
Nodding
Feedback
Clarification
Written communication is more difficult than verbal communication
Its hard to write all the details in one place
There is limited feedback between the transmitter and the receiver and there are no spoken words or body language to provide critical feedback.
Its time consuming to write
The holes in the Swiss cheese model represents
errors made by individuals or by the organization
the safety policies of the organization
the defence to prevent accident
Which best represents proactive safety behavior?
Waiting for investigations
Reporting hazards before incidents occur
Blaming others for the error
Maintenance was carried out when adversely affected by drugs or alcohol result in the
Revocation, suspension or limitation of the aircraft maintenance license
Warning to the employee for not repeating the same
Temporary suspension from the job
What is the main aim of error management systems like MEDA?
To analyze and prevent future errors through system improvements
To punish maintenance personnel after an incident
To identify who caused the error
While scheduling the tedious/boring tasks what time should be considered?
Resume from the last completed step
Ignore it and continue
Restart the task from the beginning
Which layer in the Swiss Cheese Model represents regulations and procedures?
Defense
Sharp arrow
Holes
What should be done when a distraction occurs during a task?
Ignore it and continue
Resume from the last completed step
Latent conditions
What component of the SHELL model includes manuals and procedures?
Software
Hardware
Lifeware
What is the main purpose of cognitive science in human factors?
Hearing enhancement
Understanding human thinking and decision making
Noise reduction
Hearing loss caused by damage to the inner ear is termed:
Sensorineural hearing loss
Conductive hearing loss
Accute hearing loss
Abnormal fear about the height is known as
Acrophobia
Agoraphobia
Claustrophobia
If the physical reaction finds no release, the stress ”messengers” are stored in the body, resulting in adverse
Negative Stress
Positive stress
Arousal
Average sleep required for human in 24 hour is
6-8 hours
4-6 hours
10-12 hours
Complete communication requires
a transmitter and a medium for communication
a transmitter and receiver only
a transmitter, a receiver and feedback
The chance of slip is more common in
Routine task
Unscheduled Task
Complex task
The Dirty Dozen includes
Distraction
Good housekeeping
Job satisfaction
Which is an example of a violation rather than an error?
Forgetting to torque a bolt
Misunderstanding a procedure
Intentionally skipping a checklist item
Effective shift handover should include:
Unwritten verbal messages
Clear, correct and complete documentation
Personal details
What is the best method to confirm a message has been understood correctly?
Nodding
Feed back
Guessing the meaning
A maintenance worker skipping steps due to overconfidence is an example of:
Lack of communication
Distraction
Complacency
“Latent conditions” in an organization are:
Immediate physical threats
Easily visible human mistakes
Defects in systems that lie dormant until triggered by active failures
Maintenance was carried out when adversely affected by drugs or alcohol result in the
Warning to the employee for not repeating the same.
Revocation, suspension or limitation of the aircraft maintenance license
Temporary suspension from the job
What should be the sequence of a shift work?
Early-Late-Night
Early-Night-Late
Night-Late-Early
What is the primary goal of studying Human Factors in aviation maintenance?
Reduce human error and improve safety
Improve engineering performance
Decrease maintenance cost
In the SHELL model, what does the first 'L' stand for?
Lifeware – individual human
Leadership
Lightware
Which of these is a correct example of “Dirty Dozen” in aviation?
Lack of assertiveness
Adequate Supervision
Scheduled break
Fatigue primarily affects:
Decision-making and attention
Visual acuity
Hand Strength
What does the MEDA acronym stand for?
Maintenance Error Decision Aid
Manual Equipment Diagnostic Assessment
Maintenance Error Detection Approach
An effective wat to reduce communication error is
Use of complex technical terms
Active listening and feedback
Avoiding written records
When is the risk of error the highest during a shift?
A. Start of the shift
B. After meals
C.
Toward the end of long shifts
Start of the shift
After meals
Conductive hearing loss typically results from:
Damage to optic nerve
Obstruction or infection in outer/middle ear
Exposure to low light
What define the Safet Management System
How the organization implement the norms to address the hazards
How the organaization take action against the employee,when an error happened
A systematic approach to managing safety, including the necessary organizational structures, accountabilities, policies, practices, and procedures.
When you know that you have mental distractions, how can you deal with that?
then ask a colleague to check on you
Skip the remaining part of the job
Finish the job without bothering others
When written communication is done on the logbook, what we need to consider
Write in a language that you can understand
Take your time, and complete the logbook with attention to detail
Make it as short as possible
One of the rules for speaking include
Consider the knowledge of your listeners and adapt your speech to it
Try to use all the technical terms
Always communicate in precise
Situation awareness can be divided into
perception and conclusion
understanding and action
perception, understanding and prediction
One of the quick ways to check whether the right tools are in place and none are missing is
follow the shadow board technique
every time count the tools
see the workplace and check manually
If you are taking a medicine for the first time, be sure to take it at least how much hours before you must report to work?
24
1
10
Peer checking is effective for:
Verifying critical steps
Avoiding accountability
Speeding up work
“Error chain” refers to:
A reporting method
A sequence of small mistakes leading to a major incident
A list of error types
One goal of safety promotion in human factors is to:
Add more manuals
Increase productivity
Reinforce safety attitudes and awareness
If a technician is unsure about a task, they should:
Call a supervisor or refer to manuals
Estimate and proceed
Skip the step
What role does documentation play in aviation safety?
Legal defense only
Ensures task traceability and repeatability
Is optional if memory is good
What is the benefit of reviewing incidents and near misses?
Identifying staff for termination
Learning and prevention of future errors
Increasing paperwork
The function of “double-checking” during inspections is to:
Improve efficiency
Avoid team conflict
Reduce human error
A sign of a poor safety culture is:
High reporting rates
Transparent investigations
Fear of disciplinary action for reporting
Which of the following is an environmental hazard in hangars?
Team conflict
Loud noise and poor ventilation
Documentation error
The process of building a “just culture” involves:
Rewarding violations
Punishing every mistake
Learning from incidents without blame
What is a risk of working under extreme time pressure?
Better task focus
Reduced error rate
Increased error likelihood
An effective team is built on:
Speed
Trust and communication
Hierarchy
What is the first step in the MEDA process?
Assign blame
Interview the technician
Identify the error
The most appropriate time to report a safety concern is:
At the end of the year
Immediately when noticed
During audit time
"Latent failure" means
Obvious error at the sharp end
Undetected system weakness
Technician’s mistake during work
Which error type involves misinterpreting instructions?
Violation
Rule-based error
Communication error
What reduces the likelihood of skipping steps in a maintenance task?
Multitasking
Job cards/checklists
Verbal memory
What is the “adaptation” of the eye most useful for?
Reading fast
Focusing in different temperatures
Adjusting to different light levels
Which of the following may help prevent stress overload?
Skipping breaks
Prioritizing tasks
Working extra hours
The Dirty Dozen factor associated with a person not speaking up when they see something wrong is:
Lack of assertiveness
Distraction
Pressure
Which communication technique is particularly important when dealing with multilingual teams?
Speaking quickly to save time
Avoiding written communication
Using simple language and confirmation
According to Human Factors training, effective supervision includes:
Guiding teams while promoting safety and compliance
Punishing mistakes immediately
Giving technicians full freedom with no monitoring
The term “Just Culture” in aviation refers to:
A workplace where all violations are punished equally
A culture that encourages error reporting without fear of blame
A system focused only on financial justice
What should be done when a shift handover occurs?
Avoid overlap between team
Use written logs and a verbal briefing
Rely on verbal instruction alone
One main reason for documenting maintenance actions is to:
Impress management
Ensure traceability and accountability
Fulfill legal requirements only
A common cause of failure in communication between shifts is:
Over-documentation
Use of standardized forms
Incomplete or missing information
A technician starts a job without the correct tools and decides to “make do.” This is an example of:
Violation
Procedural compliance
Innovation
Why is cross-checking by a second technician important?
It delays the task
It provides a safety net to catch potential errors
It ensures blame is shared
