CAA NZ CPL Human Factors common mistakes
CAA NZ CPL Human Factors · Understand the traps and how to avoid them.
Treating the 'situational awareness' questions as simple attention checks, so when asked what level of SA has broken down (e.g. a pilot who has the right picture but misprojects it) the candidate answers 'lost awareness' instead of 'level 3 - projection'.
Candidates memorise the three-level model as a slogan and never practise classifying scenarios by which level fails; exam stems are written so that the failure sits one level below the obvious answer.
What to do instead
For every SA vignette, write out the three levels explicitly (perception, comprehension, projection) and ask 'what is the last level the pilot got right?'. Drill 15-20 short scenarios until the classification is automatic, and learn the standard countermeasures (monitoring, cross-checking, task prioritisation, communication) as answers to 'what should have been done'.
Answering hypoxia questions from a single memorised altitude (e.g. 'hypoxia starts at 10,000 ft') rather than distinguishing time of useful consciousness by altitude, the difference between hypoxic, hypemic, stagnant and histotoxic hypoxia, and the difference between hypoxia and hyperventilation.
The four types and the TUC table are learned as lists without causal understanding, so questions that describe symptoms in a specific context (smoker, blood donation, rapid decompression) get matched to the wrong type.
What to do instead
Build a one-page table linking each hypoxia type to its cause and a typical aviation trigger, and a separate TUC table by cabin altitude. Learn the key discriminators between hypoxia and hyperventilation (e.g. cyanosis and response to 100% oxygen versus tingling and improvement with slower breathing), then self-test with symptom-only stems.
Confusing the sensory systems in spatial disorientation questions - attributing somatogyral illusions to the otoliths or the leans to the semicircular canals - and giving 'trust your instruments' as the sole answer when the question asks for the specific illusion or the specific recovery.
The vestibular anatomy is studied as isolated facts, and candidates do not link each illusion to the manoeuvre that provokes it (e.g. somatogravic to acceleration, the leans to a slow roll, Coriolis to head movement in a turn).
What to do instead
Make an illusion-to-trigger-to-recovery table (the leans, somatogravic, somatogyral, Coriolis, G-excess, autokinesis, black hole approach) and be able to name the provoking manoeuvre and the instrument response for each. Practise questions that ask 'which illusion is most likely?' rather than only 'what do you do?'.
Mixing up the stages and effects of stress and fatigue - for example calling the alarm stage 'exhaustion', or claiming fatigue is best countered by caffeine rather than by rest and fatigue-risk management.
General adaptation syndrome and fatigue management are skimmed because they feel like common sense, but exam items test the specific stage names, the performance effects at each stage, and the difference between acute and chronic fatigue.
What to do instead
Learn the three GAS stages (alarm, resistance, exhaustion) with a one-line performance description for each. For fatigue, learn the difference between acute and chronic, the circadian low points, and the hierarchy of countermeasures (rest/sleep first, then scheduling and napping, with caffeine as a short-term aid). Practise distinguishing 'what is the cause' from 'what is the most effective fix'.
Applying the wrong decision-making model to a scenario, or describing a hazardous attitude without naming the matching antidote (e.g. 'resignation' answered with 'follow the rules' instead of 'I'm not helpless - I can make a difference').
The five hazardous attitudes and their antidotes are memorised as paired words but not practised as scenario recognition, and candidates do not separate classical decision-making from recognition-primed decision-making.
What to do instead
Learn the five attitudes with a realistic pilot statement for each and the exact antidote wording. For decision models, know when recognition-primed decision-making applies (experienced pilot, time-pressured, familiar situation) versus a analytical model. Answer stems by first naming the attitude or model, then selecting the response that matches it.
Treating Crew Resource Management as 'being nice to your colleague' and choosing the polite option when the question tests assertiveness, the gradient of authority, or a barriers-and-error-management model.
CRM is studied as soft skills without the underlying error-management framework, so questions about error chains, threat and error management, and appropriate assertiveness are answered by tone rather than by principle.
What to do instead
Learn the threat and error management model (threats, errors, undesired aircraft states, and the countermeasures at each stage) and the concept of the authority gradient. For assertiveness items, choose the response that states the concern, the evidence, and the required action clearly and early, rather than the most deferential option.
Mixing up the effects of alcohol, cannabis, antihistamines, and prescription drugs - for example saying a sedating antihistamine is acceptable for flying, or misstating the alcohol minimum rest period - and confusing the effects of smoking and carbon monoxide on oxygen carriage.
Drug and alcohol content is learned as isolated numbers without the underlying pharmacology (half-life, sedation, impairment versus legal limit), and the carbon monoxide and smoking effects are not linked to hypemic hypoxia.
What to do instead
Build a table of substance, effect on performance, and operational rule (including the standard rest periods and the fact that a legal limit is not a fitness-to-fly standard). Link smoking and carbon monoxide to hypemic hypoxia explicitly. Practise questions phrased as 'is this pilot fit to fly?' rather than only recall of limits.
Answering decompression and cabin environment questions with a single action (e.g. 'put on the mask') without the correct sequence, or confusing the signs of decompression with those of hypoxia and hyperventilation.
Checklists are memorised as items but not as a prioritised sequence, and candidates do not practise distinguishing sudden decompression cues (bang, fog, rushing air, temperature drop) from insidious ones.
What to do instead
Learn the decompression response as a sequence: masks on and 100% oxygen, establish communication, initiate emergency descent to the appropriate altitude, then assess. Practise identifying sudden versus slow decompression from symptom descriptions, and separate the immediate actions from the follow-up actions in the answer options.
Confusing the senses and their limitations in vision and hearing questions - for example claiming foveal vision is best at night, misstating dark adaptation time, or getting the function of the semicircular canals and otoliths the wrong way round.
Sensory physiology is memorised as isolated numbers and labels without a functional model, so questions that apply the limitation (night scanning, empty-field myopia, black hole approach) are answered from the label rather than the mechanism.
What to do instead
Learn the functional story: rods versus cones, where each is distributed, why off-centre scanning works at night, dark adaptation timing, and the effects of hypoxia, smoking and cockpit lighting. For the vestibular system, learn canals as angular acceleration detectors and otoliths as linear acceleration and gravity detectors, then test each with applied scenarios.
Ignoring the wording of the stem - answering 'what is the first action' with a later action, or 'which is least likely' with the most likely option - and choosing a plausible but non-specific distractor over the specific correct one.
Under time pressure candidates pattern-match a keyword in the stem to a familiar answer and stop reading the qualifier; this is a technique failure rather than a knowledge gap, and it costs marks on otherwise known material.
What to do instead
Adopt a fixed routine: underline the qualifier (first, most, least, immediate), predict the answer before reading the options, then eliminate. Flag any question containing a qualifier for a second pass. In practice sets, review every wrong answer to classify it as knowledge, misreading, or guess, and target the misreads with timed drills.