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CAA NZ AME Human Factors study materials
CAA NZ AME Human Factors study resources

CAA NZ AME Human Factors practice questions

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Question 1Human Factors (AME licence syllabus subject)

In human factors terminology, what does the 'dirty dozen' refer to?

  1. A register of twelve recurring defects that must be reported to the civil aviation authority
  2. A set of twelve maintenance error precursors commonly used to raise awareness of human error in aviation maintenance Correct answer.
  3. A schedule of twelve rest periods prescribed for maintenance staff during night shifts
  4. A list of twelve mandatory inspection tasks required before an aircraft is returned to service

Explanation

The dirty dozen is a widely used awareness framework in aviation maintenance that names twelve human and organisational factors, such as fatigue, complacency and pressure, that commonly contribute to maintenance error. It is a teaching and risk-awareness tool rather than a regulatory inspection schedule or reporting register.

Question 2Human Factors (AME licence syllabus subject)

A licensed engineer notices that a task card has been completed but the required functional test has not been recorded. Which of the dirty dozen is most directly illustrated by this situation?

  1. Complacency
  2. Inadequate documentation Correct answer.
  3. Distraction
  4. Lack of assertiveness

Explanation

Inadequate documentation covers poor, incomplete or unclear paperwork, procedures and records that allow steps to be missed or unverified. A missing functional test record is a documentation and procedural weakness rather than an attitude or attention issue.

Question 3Human Factors (AME licence syllabus subject)

According to the 'Swiss cheese' model of accident causation, an accident occurs when:

  1. the defences at several organisational levels each have weaknesses that momentarily line up Correct answer.
  2. the regulator finds that the operator's safety management system is fully compliant
  3. a single latent failure is identified during an audit and corrected before flight
  4. the most recent maintenance error is shown to be the sole cause of the event

Explanation

The model treats defences as layers with holes representing active and latent failures. An accident trajectory arises when holes in successive layers align so that a hazard passes through every barrier. No single failure is by itself sufficient, and compliance with regulation does not prevent alignment.

Question 4Human Factors (AME licence syllabus subject)

An engineer signs for a task that was actually carried out by an unqualified colleague. In human factors terms this is best described as:

  1. a violation Correct answer.
  2. a mistake
  3. a slip
  4. a lapse

Explanation

Violations are deliberate deviations from rules or procedures, and signing for work not personally performed is a knowing breach of certification rules. Slips and lapses are unintended action or memory failures, and mistakes are errors of judgement or knowledge rather than intentional rule-breaking.

Question 5Human Factors (AME licence syllabus subject)

Which statement best describes a latent failure in aviation maintenance?

  1. An error made by a technician that immediately causes visible damage to an aircraft system
  2. A physical defect that is detected by built-in test equipment during the pre-flight check
  3. A decision or condition in management or design that lies dormant and only later combines with other factors to cause harm Correct answer.
  4. A failure that occurs only in the flight crew and is unrelated to maintenance activity

Explanation

Latent failures originate in organisational, managerial or design decisions and remain hidden until they interact with local conditions or active failures. They are distinguished from active failures, which have immediate and visible effects at the point of work.

Question 6Human Factors (AME licence syllabus subject)

What is the primary purpose of a human factors training programme for maintenance staff?

  1. To reduce error and improve safety by developing awareness of performance limitations and error traps Correct answer.
  2. To ensure that every engineer can perform every maintenance task on every aircraft type
  3. To replace technical training with instruction on interpersonal skills
  4. To transfer responsibility for safety from the organisation to the individual engineer

Explanation

Human factors training builds understanding of how limitations such as fatigue, workload and communication affect performance, and gives practical strategies to trap errors. It complements rather than replaces technical training and does not shift safety responsibility solely onto individuals.

Question 7Human Factors (AME licence syllabus subject)

In the SHELL model, what does the 'L' at the centre of the diagram represent?

  1. The liveware, meaning the human being at the centre of the system Correct answer.
  2. The limits imposed by the aircraft manufacturer
  3. The legal framework governing maintenance approvals
  4. The logistics chain supplying parts to the hangar

Explanation

SHELL stands for Software, Hardware, Environment and Liveware, with the central Liveware representing the human. The model highlights the interfaces between the person and the other components, and the mismatches at those interfaces are where error commonly arises.

Question 8Human Factors (AME licence syllabus subject)

Which of the following is the most reliable way to reduce the chance of a memory lapse during a complex maintenance task?

  1. Working faster so the task is completed before fatigue sets in
  2. Relying on experience to remember the sequence of steps
  3. Using a written procedure with sign-off steps and independent inspection where required Correct answer.
  4. Asking a colleague to remind you of any steps you might forget

Explanation

Memory lapses are best countered with external memory aids such as written procedures, checklists and step sign-offs, which do not depend on the person's recall. Relying on experience or on another person's memory leaves the error path open, and speeding up work increases rather than reduces error risk.

Question 9Human Factors (AME licence syllabus subject)

An engineer is fatigued after a long shift and is asked to carry out a complex rigging adjustment. Which action is most consistent with good human factors practice?

  1. Perform the task quickly to finish before the end of the shift
  2. Ask an unqualified colleague to perform the task while the engineer supervises
  3. Defer the task or arrange for a rested, competent person to carry it out Correct answer.
  4. Complete the adjustment alone because the task card is detailed

Explanation

Fatigue degrades attention, memory and decision-making, so high-demand tasks should be deferred or reassigned to a rested and competent person. Detailed task cards do not remove the physiological effects of fatigue, and rushing or delegating to unqualified staff creates additional violations.

Question 10Human Factors (AME licence syllabus subject)

Circadian rhythm disruption is most likely to affect a maintenance engineer working which pattern?

  1. A fixed day shift with consistent start and finish times
  2. A standard Monday-to-Friday day roster
  3. A part-time schedule with regular morning hours
  4. A rotating roster that includes frequent night shifts Correct answer.

Explanation

The circadian rhythm is a roughly 24-hour internal cycle synchronised to daylight and routine. Frequent night shifts and rotating rosters force the body to operate against this cycle, causing sleepiness and reduced alertness during the biological night. Fixed day schedules are consistent with the natural rhythm.

Question 11Human Factors (AME licence syllabus subject)

What is the main human factors benefit of a 'clean room' or toolbox talk before a maintenance task?

  1. It allows the team to share the plan, identify hazards and confirm task understanding before work begins Correct answer.
  2. It formally records the engineer's licence details for the regulator
  3. It replaces the need for a written work procedure
  4. It certifies that the aircraft is airworthy after the task

Explanation

A pre-task briefing aligns the team on the plan, surfaces hazards and confirms that everyone understands the scope and their role. This reduces communication failures and assumption errors. It is not a licensing record, a substitute for procedures or a certification of airworthiness.

Question 12Human Factors (AME licence syllabus subject)

Effective communication between a maintenance team and flight crew at the aircraft is most improved by:

  1. passing the message through several intermediaries to ensure it is heard
  2. using technical jargon freely so that the message sounds authoritative
  3. writing the message on a scrap of paper and leaving it in the cockpit
  4. using standard phraseology and confirming that the message has been understood Correct answer.

Explanation

Standard phraseology reduces ambiguity, and readback or confirmation closes the communication loop so that misunderstanding is detected. Jargon, informal notes and multiple intermediaries all increase the chance of distortion or loss of information.

Question 13Human Factors (AME licence syllabus subject)

A supervisor repeatedly interrupts an engineer with unrelated questions during a critical inspection. Which error-producing condition is being created?

  1. Distraction Correct answer.
  2. Normalisation of deviance
  3. Complacency
  4. Peer pressure

Explanation

Distraction is any interruption that draws attention away from the task, and resuming after an interruption is a common point at which steps are missed. Complacency involves reduced vigilance from overconfidence, while normalisation of deviance and peer pressure concern attitudes to rule-breaking.

Question 14Human Factors (AME licence syllabus subject)

Which situation is the clearest example of the dirty dozen factor 'pressure'?

  1. An engineer reports a defect that will delay the aircraft
  2. An engineer chooses to re-read a procedure because it is unfamiliar
  3. An engineer is told the aircraft must depart within the hour and skips a verification step Correct answer.
  4. An engineer requests additional training on a new system

Explanation

Pressure arises when time or commercial demands push people to take shortcuts, such as omitting a verification step to meet a departure deadline. Reporting a defect or requesting training reflects a healthy safety culture, and re-reading a procedure is a positive defensive behaviour.

Question 15Human Factors (AME licence syllabus subject)

In the context of maintenance human factors, 'assertiveness' refers to:

  1. the willingness to speak up and state a safety concern even when it is inconvenient or unwelcome Correct answer.
  2. the tendency to insist that one's own technical opinion is always correct
  3. the confidence to sign off work without independent inspection
  4. the ability to complete tasks faster than colleagues

Explanation

Assertiveness is the willingness to raise concerns, question unclear instructions and stop work when safety is at risk, even under pressure or against seniority. It is not arrogance, nor is it a justification for skipping inspection or rushing.

Question 16Human Factors (AME licence syllabus subject)

Which of the following best describes 'situational awareness' in aircraft maintenance?

  1. Knowing the aircraft type rating held by each engineer on shift
  2. Perceiving, understanding and predicting what is happening around the task and the aircraft Correct answer.
  3. Remembering the content of the last human factors training course
  4. Following the task card exactly without considering the surrounding environment

Explanation

Situational awareness has three levels: perception of relevant cues, comprehension of their meaning and projection of what may happen next. It is a dynamic, task-focused state rather than static knowledge such as type ratings or course content, and it requires attention to context beyond the task card.

Question 17Human Factors (AME licence syllabus subject)

An engineer is working on a system that is similar to one worked on earlier the same day and mistakenly applies the earlier procedure. Which error type does this describe?

  1. A lapse caused by forgetting a step
  2. A slip caused by a strong habit or expectation Correct answer.
  3. A violation caused by deliberate rule-breaking
  4. A mistake caused by a gap in technical knowledge

Explanation

A slip is a correct intention carried out with the wrong action, often triggered by similarity between tasks or by a strong habitual pattern. The engineer intends to do the right task but executes a familiar alternative, which distinguishes it from a lapse, a mistake or a violation.

Question 18Human Factors (AME licence syllabus subject)

Which of the following is the most effective organisational defence against the dirty dozen factor 'lack of knowledge'?

  1. Shortening the task card to reduce reading time
  2. Relying on experienced staff to mentor new starters informally
  3. Increasing the number of supervisors on each shift
  4. Ensuring task authorisation matches documented competence and providing recurrent training Correct answer.

Explanation

Lack of knowledge is addressed by controlling who is authorised to perform a task and by maintaining competence through training and assessment. Informal mentoring and more supervisors do not guarantee that the individual has the required knowledge, and shortening task cards removes information.

Question 19Human Factors (AME licence syllabus subject)

A maintenance organisation finds that the same paperwork error recurs across several teams. Which response best reflects a human factors approach?

  1. Examine the procedure and form design for systemic causes and involve staff in redesigning them Correct answer.
  2. Add another layer of sign-off without changing the form
  3. Discipline the individuals involved and take no further action
  4. Issue a memo reminding staff to be more careful

Explanation

Recurring errors across teams usually indicate systemic contributors such as confusing forms, ambiguous procedures or poor interface design. A human factors approach investigates those conditions and involves the users in redesign, rather than blaming individuals or adding redundant checks and exhortations.

Question 20Human Factors (AME licence syllabus subject)

In the SHELL model, a mismatch at the Liveware-Hardware interface is best illustrated by:

  1. a noisy hangar that makes verbal communication difficult
  2. a disagreement between two engineers about a task
  3. a component that is difficult to reach and requires an awkward posture Correct answer.
  4. a procedure written in ambiguous language

Explanation

The Liveware-Hardware interface concerns how well the physical equipment and workplace suit the human body and senses. Poor access or awkward posture is a classic mismatch at this interface, whereas ambiguous procedures belong to Liveware-Software, noise to Liveware-Environment and interpersonal conflict to Liveware-Liveware.

Question 21Human Factors (AME licence syllabus subject)

An engineer working a night shift is found to have reduced alertness and slowed reactions. Which combination of countermeasures is most appropriate for the organisation?

  1. Relying on caffeine alone to maintain alertness
  2. Increasing the shift length to reduce the number of handovers
  3. Providing controlled rest, adequate lighting and a fatigue risk management process Correct answer.
  4. Removing all breaks so the shift finishes earlier

Explanation

Fatigue risk is managed through a system of controls, including planned rest opportunities, suitable lighting, task rotation and a formal fatigue risk management process. Extending shifts, removing breaks or depending solely on caffeine does not address the underlying sleep pressure and circadian disruption.

Question 22Human Factors (AME licence syllabus subject)

A team has gradually come to accept a shortcut in a torque procedure because it has never caused a problem. This is best described as:

  1. normalisation of deviance Correct answer.
  2. a slip of action
  3. an environmental mismatch
  4. a lapse of memory

Explanation

Normalisation of deviance occurs when a non-compliant practice becomes accepted over time because no adverse outcome has followed, eroding the safety margin. It differs from slips and lapses, which are unintended individual failures, and from an environmental mismatch in the SHELL sense.

Question 23Human Factors (AME licence syllabus subject)

Which statement best explains why the 'blame and punish' response to maintenance error tends to reduce safety?

  1. It discourages reporting and hides the systemic conditions that produced the error Correct answer.
  2. It increases the cost of training programmes
  3. It guarantees that the same error will not recur
  4. It removes the need for procedures to be reviewed

Explanation

Punitive responses suppress the reporting of errors and near misses, so the organisation loses the information needed to identify latent conditions. Blame also directs attention to individuals rather than the system, and it does not prevent recurrence.

Question 24Human Factors (AME licence syllabus subject)

An engineer notices a discrepancy but says nothing because the shift supervisor is known to react angrily to delays. Which dirty dozen factor is most clearly operating?

  1. Inadequate tools
  2. Fatigue
  3. Lack of assertiveness Correct answer.
  4. Distraction

Explanation

Lack of assertiveness describes a failure to raise a concern when doing so is difficult or uncomfortable, often because of fear of a negative reaction. The scenario describes a communication and confidence barrier rather than a tooling, fatigue or attention problem.

Question 25Human Factors (AME licence syllabus subject)

A maintenance error investigation finds that the task card, the spares availability and the shift handover all contributed to an error. Which conclusion is most consistent with human factors principles?

  1. Only the task card should be changed and the other factors ignored
  2. The error emerged from interacting systemic factors and requires multi-layered corrective action Correct answer.
  3. The investigation should be closed because no single cause was found
  4. The error should be attributed to the individual with the least seniority

Explanation

Human factors investigations treat error as the result of interacting systemic conditions rather than a single cause or a single individual. Corrective action should therefore address each contributing layer, including documentation, logistics and communication at handover.

Question 26Human Factors (AME licence syllabus subject)

In maintenance human factors, which statement best defines an 'error' as distinct from a 'violation'?

  1. An error is a deliberate shortcut taken to save time, whereas a violation is an accidental slip of the hand.
  2. An error is any action that damages aircraft parts, whereas a violation is any action that delays the departure.
  3. An error is a failure of the maintenance organisation, whereas a violation is always a failure of the individual engineer.
  4. An error is an unintended action or decision that fails to achieve the intended outcome, whereas a violation is a deliberate deviation from a known rule or procedure. Correct answer.

Explanation

Human factors distinguishes unintended failures (errors such as slips, lapses and mistakes) from intentional non-compliance with a known rule (violations). The distinction matters because the two demand different corrective actions: error management focuses on task and system design, while violations require attention to culture, norms and perceived pressure.

Question 27Human Factors (AME licence syllabus subject)

An AME is removing a panel and, while walking to fetch a tool, cannot remember whether the fasteners were already torqued. Which type of human error does this most closely represent?

  1. A perceptual error
  2. A memory lapse Correct answer.
  3. A rule-based mistake
  4. A deliberate violation

Explanation

A lapse is an unintended failure of memory or attention, such as forgetting whether a step was completed after an interruption. Lapses are strongly associated with task interruption and are countered by physical indicators, sign-offs and checklists rather than by reminding staff to concentrate harder.

Question 28Human Factors (AME licence syllabus subject)

Which statement best describes the purpose of the 'MEDA' style maintenance error investigation?

  1. It identifies the organisational and task-related factors that contributed to an error so that systemic defences can be improved. Correct answer.
  2. It establishes which engineer was at fault so that disciplinary action can be recorded against their licence.
  3. It calculates the cost of the error so that the organisation can recover it from the responsible team.
  4. It replaces the need for a safety management system by resolving each event individually.

Explanation

Maintenance error decision aid investigations look beyond the individual to the contributing factors such as procedures, tooling, training, supervision and environment. The output is a set of corrective actions aimed at the system, because blaming the person leaves the underlying conditions unchanged and errors recur.

Question 29Human Factors (AME licence syllabus subject)

A hangar has poor task lighting and the same part number is used on two very similar components. Which pair of dirty dozen factors is most directly involved?

  1. Assertiveness and norms
  2. Environment and lack of knowledge Correct answer.
  3. Fatigue and pressure
  4. Complacency and teamwork

Explanation

Poor lighting is an environment factor, while similar-looking parts create a knowledge and identification challenge that can lead to wrong-part fitting. The dirty dozen lists these as distinct contributors, and each can be mitigated by better lighting and by clearer part identification or segregation.

Question 30Human Factors (AME licence syllabus subject)

Which of the following is the most effective defence against the dirty dozen factor 'distraction' during a critical task?

  1. Using a physical do-not-disturb marker and a written record of the step reached before responding to the interruption. Correct answer.
  2. Asking a colleague to complete the remainder of the task.
  3. Relying on memory to resume the task at the right point after the interruption.
  4. Working faster so that interruptions are less likely to occur.

Explanation

Distraction is countered by making the interruption visible and by creating a record of progress so that the task can be resumed at the correct point. Physical markers and written step records are the standard defences because they do not depend on memory under load.

Question 31Human Factors (AME licence syllabus subject)

In human factors terms, what is 'complacency' in a maintenance environment?

  1. A deliberate refusal to follow procedures because the engineer disagrees with them.
  2. A state of reduced vigilance that develops when tasks become routine and the perceived risk is low. Correct answer.
  3. A physical condition caused by exposure to noise and vibration.
  4. A management style that prioritises production over safety.

Explanation

Complacency is a loss of vigilance arising from familiarity and routine, where the absence of past problems lowers perceived risk. It is managed by varying tasks, using independent checks and keeping procedures meaningful rather than by exhorting staff to be careful.

Question 32Human Factors (AME licence syllabus subject)

An engineer is asked to sign off a task they did not personally perform because a colleague has gone home. Which dirty dozen factor does this most directly challenge?

  1. Teamwork and communication Correct answer.
  2. Fatigue
  3. Environmental control
  4. Lack of resources

Explanation

Signing for work performed by someone else breaches the individual certification principle and highlights a breakdown in teamwork and communication. The correct response is to trace the person who did the work or to re-verify the task, not to accept an unverified signature.

Question 33Human Factors (AME licence syllabus subject)

Which statement best explains why 'just culture' is important for maintenance safety reporting?

  1. It ensures that all errors are treated as individual failures to be corrected by retraining.
  2. It guarantees that no engineer will ever be disciplined for any action.
  3. It removes the need for regulatory oversight of maintenance organisations.
  4. It encourages reporting of errors and near misses by distinguishing genuine mistakes from reckless behaviour, so hazards are identified early. Correct answer.

Explanation

A just culture draws a line between honest error, which should be reported and learned from, and reckless or intentional misconduct, which still attracts sanction. This balance increases reporting so that latent hazards surface before they cause an accident.

Question 34Human Factors (AME licence syllabus subject)

During a shift handover, the outgoing engineer verbally tells the incoming engineer about an open fuel leak check but writes nothing down. Which is the most significant human factors risk?

  1. The outgoing engineer may be late leaving the hangar.
  2. The verbal brief may take longer than a written one.
  3. The incoming engineer may need to ask the supervisor for clarification.
  4. The incoming engineer may not appreciate the status of the open task and may release the aircraft or duplicate work. Correct answer.

Explanation

Shift handover is a recognised high-risk interface because information can be lost or distorted when it is only verbal. A written, structured handover ensures the status of open tasks, including critical ones such as leak checks, is unambiguous and traceable.

Question 35Human Factors (AME licence syllabus subject)

What does the 'L' in the outer ring of the SHELL model, at the Liveware-Liveware interface, refer to?

  1. Legislative requirements
  2. Licensing authority inspectors
  3. Other people, such as colleagues, supervisors and flight crew Correct answer.
  4. Lighting levels in the hangar

Explanation

The SHELL model places Liveware at the centre and matches it against Software, Hardware, Environment and other Liveware. The outer Liveware-Liveware interface covers interpersonal interactions, including teamwork, supervision and communication between maintenance staff and other groups.

Question 36Human Factors (AME licence syllabus subject)

A maintenance organisation introduces a second independent inspection of all engine control rigging after a near miss. Which error management principle does this best illustrate?

  1. Error containment through redundancy in the task design Correct answer.
  2. Reduction of the workforce required for the task
  3. Removal of the need for training on the task
  4. Reliance on individual vigilance to prevent error

Explanation

Independent double checks add a redundant barrier so that a single error is caught before it propagates. This is a design-based defence because it does not rely on the first person being more careful or on extra training alone.

Question 37Human Factors (AME licence syllabus subject)

Which of the following best describes 'situational awareness' at the level of an individual engineer?

  1. Remembering the names of all team members on shift.
  2. Perceiving what is happening around the task, understanding what it means and predicting what may happen next. Correct answer.
  3. Being aware of the location of the nearest fire extinguisher.
  4. Knowing the content of the maintenance manual by heart.

Explanation

Situational awareness has three levels: perception of relevant elements, comprehension of their meaning and projection of future states. In maintenance this means noticing the state of the aircraft, understanding the implications and anticipating the next hazard.

Question 38Human Factors (AME licence syllabus subject)

An engineer is working alone on the flight deck at night when a warning light illuminates briefly and then extinguishes. Which action best reflects good situational awareness?

  1. Ignore it because the light is no longer illuminated.
  2. Assume it is a bulb test and continue without comment.
  3. Record the event and investigate or report it before continuing, because a transient indication may signal a developing fault. Correct answer.
  4. Turn off the aircraft battery to clear the indication.

Explanation

A transient warning is information that must be comprehended and acted on, because intermittent faults can precede failures. Good situational awareness means not dismissing an anomaly simply because it has disappeared, and documenting it so the next shift or crew is informed.

Question 39Human Factors (AME licence syllabus subject)

Which statement best describes the effect of fatigue on maintenance performance?

  1. It slows reaction time and impairs attention and decision making, increasing the likelihood of errors. Correct answer.
  2. It improves concentration on routine tasks by reducing distraction.
  3. It affects only engineers working night shifts.
  4. It only affects physical strength and has no effect on cognitive performance.

Explanation

Fatigue degrades alertness, attention, working memory and decision making, all of which are critical for maintenance tasks. The effect is cumulative and applies to day shifts as well as night shifts, particularly after long or extended duty periods.

Question 40Human Factors (AME licence syllabus subject)

An engineer is distracted and refits a component using fasteners from an adjacent tray. Which error type and defence are most appropriately paired?

  1. A mistake, best defended against by more frequent toolbox talks
  2. A violation, best defended against by disciplinary action
  3. A slip, best defended against by segregating parts and using positive identification before fitting Correct answer.
  4. A lapse, best defended against by increasing the task pace

Explanation

Selecting the wrong but similar object is a slip, an unintended action that deviates from the plan. Segregating parts and requiring positive identification before fitting are design defences that make the correct action easier and the incorrect one harder.

Question 41Human Factors (AME licence syllabus subject)

Which of the following best describes the purpose of a 'stop and think' or 'personal risk assessment' before a maintenance task?

  1. To confirm that the engineer has read the whole manual
  2. To identify hazards and decide on controls before starting work, rather than discovering them during the task Correct answer.
  3. To replace the need for a formal permit-to-work system
  4. To record the engineer's total working hours for payroll

Explanation

A brief pre-task pause allows the engineer to consider the specific hazards, resources and conditions of the job and to put controls in place. It complements formal systems such as permits and task cards rather than replacing them.

Question 42Human Factors (AME licence syllabus subject)

A team consistently works through breaks to meet departure times. Which statement best describes the human factors consequence?

  1. Cumulative fatigue and reduced attention increase the risk of error, particularly on repetitive or detailed tasks. Correct answer.
  2. The risk is unchanged provided the team is experienced.
  3. Productivity improves permanently because the team becomes accustomed to the pace.
  4. The main effect is improved teamwork through shared effort.

Explanation

Skipping breaks reduces recovery time and leads to cumulative fatigue, which impairs attention and judgement. Experience does not protect against fatigue, and the effect is greatest on detailed or repetitive work where vigilance is essential.

Question 43Human Factors (AME licence syllabus subject)

Which of the following is the most effective way for a maintenance organisation to reduce the risk of 'normalisation of deviance'?

  1. Waiting until an incident occurs before reviewing procedures
  2. Increasing production targets to keep the team focused
  3. Relying on individual engineers to report their own deviations
  4. Actively monitoring and correcting small departures from procedure before they become accepted practice Correct answer.

Explanation

Normalisation of deviance occurs when small departures become accepted because nothing has gone wrong. Detecting and correcting these early departures keeps the standard meaningful and prevents drift, whereas waiting for an incident allows the deviation to become embedded.

Question 44Human Factors (AME licence syllabus subject)

What is the main purpose of a 'dirty dozen' awareness component in an AME human factors course?

  1. To help engineers recognise common error precursors and apply practical defences in their own work Correct answer.
  2. To satisfy a requirement for tool inventory records
  3. To provide a list of engineers who have made errors
  4. To replace the organisation's safety management system

Explanation

The dirty dozen framework describes common precursors such as fatigue, distraction, pressure and complacency so that staff can recognise them and apply defences. It is an awareness and prevention tool that supports, but does not replace, the safety management system.

Question 45Human Factors (AME licence syllabus subject)

An engineer is asked to work on a type of aircraft for which they hold no type rating and have received no training. Which response is most consistent with human factors principles?

  1. Proceed only if the task card is available
  2. Ask a colleague to describe the task and then proceed
  3. Proceed carefully because the task is similar to one on a familiar type
  4. Decline the task and escalate so that a qualified person is assigned or training is provided Correct answer.

Explanation

Working outside competence is a knowledge and assertiveness issue that must be resolved before work begins. Declining and escalating ensures the task is performed by someone qualified or that appropriate training and supervision are provided.

Question 46Human Factors (AME licence syllabus subject)

Which statement best explains the relationship between 'pressure' and 'assertiveness' in maintenance human factors?

  1. Assertiveness is only relevant to managers and supervisors.
  2. Under production pressure, engineers may be less willing to speak up about concerns, so assertiveness training and supportive supervision are important defences. Correct answer.
  3. Pressure and assertiveness are unrelated concepts in human factors.
  4. Pressure always improves assertiveness because engineers must defend their decisions.

Explanation

Time and production pressure can discourage individuals from raising concerns, particularly where supervisors are perceived as unsupportive. Building assertiveness skills and a culture that welcomes challenge helps ensure safety concerns are voiced despite pressure.

Question 47Human Factors (AME licence syllabus subject)

An engineer notices a colleague about to fit a component with the protective cap still in place. Which action best reflects the human factors concept of 'teamwork'?

  1. Speak up immediately and stop the task before the component is fitted Correct answer.
  2. Say nothing because the colleague is more experienced
  3. Report the colleague to the regulator
  4. Wait until the end of the shift and mention it in the handover

Explanation

Effective teamwork includes intervening when a colleague is about to make an error, regardless of seniority. Speaking up in the moment prevents the error from occurring and reflects a culture where challenge is accepted and expected.

Question 48Human Factors (AME licence syllabus subject)

A maintenance organisation finds that engineers frequently bypass a required independent inspection because it is difficult to schedule. Which analysis is most appropriate?

  1. The bypass is a symptom of a system design problem, so the inspection process should be made easier to schedule and compliance monitored. Correct answer.
  2. The problem will resolve itself once the engineers are more experienced.
  3. The inspection requirement should be removed to match current practice.
  4. The engineers should be disciplined individually until the bypass stops.

Explanation

When a required barrier is routinely bypassed, the design of the barrier or the surrounding process is usually contributing. Making the inspection easier to schedule and monitoring compliance addresses the cause, whereas individual discipline or removing the barrier leaves the risk in place.

Question 49Human Factors (AME licence syllabus subject)

Which of the following best describes 'communication' as a dirty dozen factor in maintenance?

  1. The ability of an engineer to speak several languages
  2. The process of writing a technical report
  3. Failures in the transfer of information between people, shifts or teams that can lead to misunderstanding or lost task status Correct answer.
  4. The physical noise level in the hangar

Explanation

Communication as a dirty dozen factor concerns the accuracy and completeness of information transfer, including verbal briefings, written handovers and documentation. Breakdowns at these interfaces can leave task status or instructions misunderstood.

Question 50Human Factors (AME licence syllabus subject)

An engineer working a rotating shift reports difficulty sleeping and increased irritability. Which human factors concern is most directly indicated?

  1. Inadequate tooling resources
  2. A lack of technical knowledge
  3. Poor teamwork within the crew
  4. Circadian disruption affecting alertness and mood Correct answer.

Explanation

Rotating shifts disrupt circadian rhythms, which affects sleep quality, alertness and mood. These effects raise the risk of error and should be managed through roster design, rest opportunities and awareness of fatigue.