Human Factors practice questions

Answer: C) State the concern clearly and respectfully, and decline to sign until the torque check is completed

Pressure is one of the Dirty Dozen, and the safety net is to speak up assertively. A mechanic may sign only for work actually completed (14 CFR 43.9), and certifying unfinished work is a false entry (14 CFR 43.12).

• AIncorrect. Under 14 CFR 43.9, the signature approves the work for return to service. A verbal briefing to the crew does not make incomplete work airworthy and is not a substitute for finishing it.
• BIncorrect. The person who signs is responsible for the entry. Certifying incomplete work would be an intentionally false entry, which 14 CFR 43.12 prohibits, regardless of who gave the order.
• CCorrect. This is the assertive response to pressure that FAA human factors guidance calls for. The mechanic may approve only work that has actually been completed to the required standard.
• DIncorrect. An aircraft with a required step still open cannot be approved for return to service. A 'pending' note does not change that.

Answer: B) Lack of awareness

Failing to foresee how an action affects other systems is lack of awareness, one of the FAA's Dirty Dozen factors. It differs from lack of knowledge, distraction and lack of assertiveness.

• AIncorrect. Lack of knowledge means not having the training, information or experience to do the job. The stem says the mechanic is trained and experienced.
• BCorrect. Lack of awareness is failure to be alert or vigilant, including failure to recognize all the consequences of an action, such as its effect on another system.
• CIncorrect. Distraction means attention is pulled away from the task, for example by an interruption. The stem says the work was not interrupted.
• DIncorrect. Lack of assertiveness is failing to speak up or express concerns. Nothing in the scenario involves failing to raise a concern.

Answer: C) To identify hazards and contributing factors so corrective actions can prevent the error from recurring

Voluntary, non-punitive error reporting collects data on hazards and contributing factors so the organization can fix the causes and prevent the error from happening again.

• AIncorrect. These programs are non-punitive. Focusing on who to blame discourages reporting and hides the underlying causes.
• BIncorrect. Confidential reporting systems are designed to encourage reporting by not using reports to punish the individual.
• CCorrect. Under 14 CFR 5.71, employees can confidentially report hazards, issues and occurrences and propose safety improvements. The data is then analyzed so causes can be corrected.
• DIncorrect. A safety report does not replace the maintenance record entries required by the regulations.

Answer: B) Drink about a cup of water every 15 to 20 minutes and rest in a cool area

Heat stress is reduced by drinking water regularly (about a cup every 15–20 minutes), taking rest breaks in a cool area, avoiding high-caffeine drinks, and acclimatizing new workers gradually.

• AIncorrect. Thirst lags behind fluid loss. NIOSH advises drinking water at regular intervals during work in heat, not waiting until you feel thirsty.
• BCorrect. NIOSH recommends about 1 cup (8 oz) of water every 15–20 minutes during moderate work in heat, plus rest breaks. This keeps workers hydrated and limits heat-related fatigue and errors.
• CIncorrect. NIOSH advises avoiding drinks high in caffeine or sugar during heat exposure. They are not a substitute for water.
• DIncorrect. New workers should acclimatize gradually over about 7–14 days, starting with no more than 20% of the usual time in heat on day 1. Full exposure right away raises the risk of heat illness.

Answer: C) Acknowledge the stress, take a short break to think rationally, and talk with someone who can help

Stress is one of the Dirty Dozen. The FAA recommends recognizing how it affects your work, stepping back to deal with it rationally, taking a break, and talking with someone who can help.

• AIncorrect. Stress already weakens concentration. Taking on harder tasks raises the chance of error instead of managing the stress.
• BIncorrect. Hiding the stress stops the technician from getting help. FAA guidance encourages talking it over with someone who can help.
• CCorrect. The FAA's stress countermeasures include being aware of how stress affects your work, stepping back to look at the problem rationally, taking a break, and discussing it with someone who can help.
• DIncorrect. A second check can help, but it leaves the stress itself unaddressed. The coworker also doesn't know about the higher risk, which undermines open communication.

Answer: A) Stop the step, get clarification from the supervisor or the document's issuing source, and have the work card corrected

An unclear instruction is a Lack of Communication hazard. The safety net is to stop and get clarification from an authoritative source, not to rely on shop habit, your own reading, or past practice.

• ACorrect. An ambiguous instruction is a communication failure. Getting clarification from an authoritative source, and fixing the card so the next person isn't misled, closes the gap without departing from approved data.
• BIncorrect. Relying on shop habit instead of approved instructions is the Dirty Dozen factor Norms. The "usual" method may be outdated or never have been approved.
• CIncorrect. Writing down your own interpretation does not make it correct or approved. The ambiguity is still there, and the work may not match what the instruction actually requires.
• DIncorrect. The last mechanic may have misread the same unclear step, and the aircraft may differ in configuration or revision level, so the error could simply be repeated.

Answer: B) Get the current manufacturer data and training or guidance on the component before starting

Lack of knowledge is one of the Dirty Dozen. The FAA's countermeasure is to get training and use current manufacturer data, asking when unsure, rather than relying on assumptions, memory or a later inspection.

• AIncorrect. Small design differences between models can cause errors. Lack of knowledge is fixed with the data for the exact part, not by assuming two parts work the same way.
• BCorrect. The FAA countermeasures for lack of knowledge are to get training, use up-to-date manuals and data, and ask someone who knows when unsure.
• CIncorrect. Inspection is a backup, not a substitute for knowing the task. Counting on someone else to catch your errors does nothing to fix the knowledge gap.
• DIncorrect. Someone's memory of a different aircraft is not approved or current data. It may be wrong or out of date.

Answer: B) It shows a missing tool right away so it can be found before the aircraft is released

Shadow boards and tool inventories make a missing tool obvious right away. This lets it be found before the aircraft is released, preventing foreign object damage from tools left behind.

• AIncorrect. Calibration due dates are tracked through a separate calibration program and tool tags. A shadow board shows whether a tool is present, not whether it is in calibration.
• BCorrect. Each tool has a marked spot, so an empty spot shows that a tool is unaccounted for. The tool can then be found before the aircraft returns to service, instead of becoming foreign object debris in a control run, engine or structure.
• CIncorrect. Better organization is a side benefit. The safety purpose is accountability: knowing that no tool has been left in or on the aircraft.
• DIncorrect. Tool ownership is an administrative matter. Shadow boards and inventories exist so that every tool is accounted for after the work is done.

Answer: B) To make sure no tool has been left in the aircraft where it could become foreign object damage

End-of-task tool inventories are a tool control measure. Their main purpose is to make sure no tool is left in the aircraft, where it could cause foreign object damage.

• AIncorrect. Precision tools are tracked against calibration due dates by a separate calibration program. An end-of-task inventory checks that every tool is present, not whether it is in calibration.
• BCorrect. FAA guidance says the main goal of tool control is to prevent accidents caused by tool FOD. Accounting for every tool (for example with shadow boards) shows right away if a tool may have been left in the aircraft.
• CIncorrect. The person who did the work is identified in the maintenance record entry required by 14 CFR 43.9. A tool inventory doesn't serve that purpose.
• DIncorrect. Part 43 requires a description of the work, the date, and the signature and certificate information. It doesn't require a list of the tools used.

Answer: A) Honest errors are treated as chances to fix the system, while reckless or willful violations still lead to accountability

A just culture tells the difference between honest errors, which are reported and used to improve the system without blame, and reckless or willful violations, which still bring accountability.

• ACorrect. A just culture encourages people to report honest mistakes and learns from them without blame, but it does not accept reckless behavior, gross negligence or willful violations.
• BIncorrect. A just culture is not blanket immunity. Reckless or intentional violations are still dealt with, even if the person reports them.
• CIncorrect. A just culture judges the behavior (honest error vs. reckless choice), not the outcome. The same honest slip is treated the same way whether or not it caused damage.
• DIncorrect. That describes a blame culture. A just culture asks why the error happened so that procedures and the system can be improved.