Aviation Maintenance Human Error
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Questions and Answers

What is considered a latent error in aviation maintenance?

  • A mechanic cannot get a new locking device because the parts room is closed. (correct)
  • A mechanic slips while using a wrench.
  • A mechanic relies on memory instead of using a job card.
  • A mechanic misreads a torque value.

    • What does a 'slip' refer to in the context of errors?

  • A good plan that was executed poorly. (correct)
  • Deviating from regulations intentionally.
  • An incorrectly selected work card for a job.
  • A failure to follow standard procedures.

    • Which of the following statements about violations is true?

  • It involves a direct deviation from safe practices. (correct)
  • It indicates a good plan was followed poorly.
  • It refers to a technical difficulty causing an error.
  • It is a minor error that occurs inadvertently.

    • What is an example of an active error?

    <p>A mechanic falls from a ladder while fixing an airplane.</p> Signup and view all the answers

    How many combinations exist for reassembling the given nut and bolt assembly?

    <p>40,000 combinations</p> Signup and view all the answers

    What is the 'Dirty Dozen' in the context of human factors training?

    <p>A collection of human error causes in maintenance.</p> Signup and view all the answers

    Which of the following best describes a mistake in aviation maintenance?

    <p>Following the incorrect procedure or card.</p> Signup and view all the answers

    What best defines 'error' in the context of aviation maintenance?

    <p>An unsafe act unintentionally committed.</p> Signup and view all the answers

    What is the impact of fatigue on aviation safety?

    <p>It impairs physical strength and mental ability.</p> Signup and view all the answers

    What does acute stress refer to?

    <p>Stress caused by short-term situations.</p> Signup and view all the answers

    What does the 'Iceberg Model' represent in understanding human error?

    <p>The large base indicates minor errors below the surface.</p> Signup and view all the answers

    What is the primary purpose of the Maintenance Error Decision Aid (MEDA)?

    <p>To document and minimize human errors.</p> Signup and view all the answers

    Which of the following best describes chronic stress?

    <p>A constant state due to ongoing issues.</p> Signup and view all the answers

    What usually happens when someone is fatigued?

    <p>They may forget to complete a task.</p> Signup and view all the answers

    How can stress affect an individual's work performance?

    <p>It can lead to reduced efficiency and errors.</p> Signup and view all the answers

    What are contributing factors in the context of event investigation?

    <p>They are reasons that can lead to human error.</p> Signup and view all the answers

    What does the process of event investigation mainly focus on?

    <p>Understanding and minimizing human error.</p> Signup and view all the answers

    Which statement is true regarding the relationship between airlines and transportation safety?

    <p>Airlines are known for their high safety record.</p> Signup and view all the answers

    What is one of the main goals of identifying the Dirty Dozen causes of error?

    <p>To reduce maintenance-related events</p> Signup and view all the answers

    Which of the following is NOT part of the Dirty Dozen?

    <p>Training</p> Signup and view all the answers

    What does a lack of teamwork primarily lead to in a maintenance environment?

    <p>Increased communication challenges</p> Signup and view all the answers

    What is a common source of pressure in maintenance organizations?

    <p>Delivering high-quality performance in limited time</p> Signup and view all the answers

    Complacency in a maintenance task can be attributed to which of the following?

    <p>Overconfidence due to repetition</p> Signup and view all the answers

    Which error often accompanies fatigue in maintenance settings?

    <p>Lack of awareness</p> Signup and view all the answers

    Which of the following best describes 'lack of knowledge' as a contributing factor?

    <p>Typically connected to manual consultation failures</p> Signup and view all the answers

    Distraction in the workplace can arise from which of the following?

    <p>Noise and other environmental factors</p> Signup and view all the answers

    What does lack of assertiveness lead to in a maintenance environment?

    <p>Inability to voice concerns</p> Signup and view all the answers

    What is the primary reason for addressing the Dirty Dozen in human factors training?

    <p>To prevent common errors</p> Signup and view all the answers

    What does 'norms' refer to in the context of maintenance errors?

    <p>Commonly accepted work practices</p> Signup and view all the answers

    What is a likely impact of a lack of resources during maintenance?

    <p>Greater likelihood of errors</p> Signup and view all the answers

    What is a common misconception regarding communication errors in maintenance?

    <p>They can always be prevented</p> Signup and view all the answers

    What psychological factor contributes to a mechanic's complacency?

    <p>Automatic performance of tasks</p> Signup and view all the answers

    Study Notes

    Aviation Maintenance Human Error

    • Aviation maintenance is improving, but reducing human error remains a key safety challenge.
    • Maintenance tasks have significant complexity, with potentially numerous incorrect reassembly combinations for components like nuts and bolts.
    • Errors are unintentional acts. Error types include: Slips – mistakes in execution of procedure, Mistakes – flawed plan or procedure selection, Violations – deviations form safe practices.
    • Active errors are obvious events (e.g., falling from a ladder). Latent errors are underlying systemic issues that lead to active errors. (e.g., a broken ladder).
    • Reporting latent errors is crucial for prevention.
    • Common human error causes (the "Dirty Dozen") include communication failures, lack of teamwork, improper norms/practices, pressure, complacency, lack of knowledge & awareness, lack of resources, distraction, lack of assertiveness, fatigue, and stress.

    Error Types and Contributing Factors

    • Communication failures are among the most frequent errors. Consistent awareness of communication challenges is essential.
    • Lack of teamwork refers to a group's failure to collaborate effectively toward common goals.
    • Norms (unwritten procedures) are vital; good examples of shift turnover practices include clear task delegation and communication. (e.g., handover between Stefan and Klaus).
    • Pressure in maintenance frequently stems from deadlines, self-imposed standards, or pressures from managers or coworkers. External and internal pressures can cause urgent situations that lead to fast-paced work and potential errors.
    • Complacency involves overconfidence in familiar tasks, leading to inattention to safety. This can be exacerbated by automatic responses to tasks.
    • Lack of Knowledge and Awareness can often be linked with failure to refer to manuals, not working collaboratively or communicating knowledge gaps, fatigue or distractions.
    • Lack of Resources (tools, manuals, personnel) can create pressure and increase risk of errors.
    • Distraction occurs from many sources (thoughts, noise, people, radio/phone) and should be accepted but addressed accordingly.
    • Lack of Assertiveness: A worker who does not speak up when appropriate is more susceptible to problems and error.
    • Fatigue: Both significant and acute fatigue situations can impede performance and cause errors– a key safety concern.
    • Stress: Both short and long-term stress can negatively affect performance and should be managed.

    Maintenance Error Decision Aid (MEDA)

    • The "Iceberg Model" explains that most human errors (minor issues) are concealed; only the major issues (event) are visible.
    • MEDA is a process to identify, document, understand, and correct contributing factors to maintenance events.
    • Understanding contributing factors that lead to errors through analysis is key to preventing similar in the future.
    • Corrective actions based on identified factors are crucial for continuous improvement.

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    Description

    This quiz explores the types of human errors in aviation maintenance, including slips, mistakes, and violations. It also delves into the factors contributing to these errors, emphasizing the importance of reporting latent errors for safety. Test your knowledge on the 'Dirty Dozen' causes of human error in the aviation industry.

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