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The rules, procedures, written documents etc., which are part of the standard operating procedures
Software
Machines, tools, test equipment, the physical structure of aircraft
Hardware
Situation in which the L-H-S system must function, the social and economic climate as well as the natural environment.
Environment
The human beings - the controller with other controllers, flight crews, engineers and maintenance personnel, management and administration people - within in the system.
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Failure to transmit, receive, or provide enough information to complete a task. Assumes that the work has been completed.
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When maintenance personnel gain experience from repeated tasks, a feeling of self-satisfaction and false confidence arises. Repeating tasks such as inspections can be ignored or skipped because maintenance personnel has performed the task several times without ever finding fault.
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Shortage of training, information, and/or ability to perform successfully.
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Anything that draws your attention away from the task at hand. They are the number one cause of forgetting things, including what has or has not been done during the maintenance procedures.
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Failure to work together to accomplish a shared goal.
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Major human factor that has contributed to many maintenance errors as a result of accidents.
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Includes not having enough manpower, equipment, documentation, time, parts, etc., to complete a task.
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Makes you to do things in a hurry.
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Occurs when a person is not self-confident enough to speak up for their rights and ideas. Failure to speak up or document concerns about instructions, orders, or the actions of others.
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A physical, chemical, or emotional factor that causes physical or mental tension.
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Failure to recognize a situation, understand what it is, and predict the possible results. It is a failure to recognize all the consequences of an action or lack of foresight.
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They are unwritten rules that are followed or tolerated by most of the organization.
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what are the additional human factors aside from Dirty Dozen that makes the Filthy Fifteen.
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Study Notes
Human Factors in Maintenance
- Human factors are the rules, procedures, written documents, machines, tools, test equipment, and physical structure of aircraft that make up the standard operating procedures.
The L-H-S System
- The L-H-S system must function in a situation that includes the social and economic climate, natural environment, and human beings such as controllers, flight crews, engineers, maintenance personnel, management, and administration people.
The Dirty Dozen
- The Dirty Dozen are 12 human factors that contribute to maintenance errors:
- Lack of communication (failure to transmit, receive, or provide enough information)
- Complacency (assumes that the work has been completed, feeling of self-satisfaction and false confidence)
- Distraction (anything that draws your attention away from the task at hand)
- Lack of teamwork (failure to work together to accomplish a shared goal)
- Pressure (makes you do things in a hurry)
- Lack of assertiveness (failure to speak up or document concerns about instructions, orders, or the actions of others)
- Stress (physical, chemical, or emotional factor that causes physical or mental tension)
- Lack of awareness (failure to recognize a situation, understand what it is, and predict the possible results)
- Lack of foresight (failure to recognize all the consequences of an action or lack of foresight)
- Norms (unwritten rules that are followed or tolerated by most of the organization)
- Resource constraints (not having enough manpower, equipment, documentation, time, parts, etc. to complete a task)
- Lack of knowledge (shortage of training, information, and/or ability to perform successfully)
The Filthy Fifteen
- The Filthy Fifteen are additional human factors that contribute to maintenance errors, aside from the Dirty Dozen.
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Description
SHELL model to Dirty Dozen to Filthy Fifteen
