### Q26: Wings level after a longer period of turning can lead to the impression of… ^t40q26 - A) Starting a descent. - B) Turning into the opposite direction. - C) Starting a climb. - D) Steady turning in the same direction as before. **Correct: B)** > **Explanation:** The correct answer is B because during a prolonged coordinated turn, the semicircular canal fluid adapts and stops signalling the turn; when the pilot levels the wings, the fluid movement creates a false signal interpreted as rotation in the opposite direction — this is the "leans" illusion. A is wrong because the illusion is one of lateral rotation, not vertical descent. C is wrong because there is no false climb sensation from levelling out of a turn. D is wrong because the adapted semicircular canals no longer signal the original turn direction upon recovery. ### Q27: Which of these options does NOT stimulate motion sickness (disorientation)? ^t40q27 - A) Turbulence in level flight - B) Non-accelerated straight and level flight - C) Flying under the influence of alcohol - D) Head movements during turns **Correct: B)** > **Explanation:** The correct answer is B because non-accelerated straight-and-level flight produces no vestibular stimulation and no conflict between the visual and balance systems, so it cannot trigger motion sickness. A is wrong as an answer because turbulence creates unpredictable accelerations that stimulate the vestibular system and cause sensory conflict. C is wrong because alcohol changes the density of the endolymph fluid in the inner ear, amplifying sensory mismatches. D is wrong because head movements during turns provoke the Coriolis effect in the semicircular canals, a strong trigger for disorientation. ### Q28: Which optical illusion might be caused by a runway with an upslope during the approach? ^t40q28 - A) The pilot has the feeling that the approach is too fast and reduces the speed below the normal approach speed - B) The pilot has the feeling that the approach is too low and therefore approaches the runway above the regular glide slope - C) The pilot has the feeling that the approach is too slow and speeds up above the normal approach speed - D) The pilot has the feeling that the approach is too high and therefore descents below the regular glide slope **Correct: D)** > **Explanation:** The correct answer is D because an upsloping runway appears shorter and steeper than a flat runway, tricking the pilot's visual system into perceiving a higher-than-actual approach angle, which leads to an instinctive descent below the correct glide slope — creating a dangerous undershoot risk. A is wrong because the illusion affects perceived height, not speed. B is wrong because it describes the opposite illusion (feeling too low) which would occur with a downsloping runway. C is wrong because speed perception is not the primary illusion created by runway slope. ### Q29: What impression may be caused when approaching a runway with an upslope? ^t40q29 - A) An undershoot - B) An overshoot - C) A landing beside the centerline - D) A hard landing **Correct: B)** > **Explanation:** The correct answer is B because this question asks about the impression (what the pilot perceives), not the actual outcome. An upsloping runway gives the visual illusion of being too high, so the pilot perceives an overshoot situation. A is wrong because although the pilot's corrective response to the false overshoot impression may actually cause an undershoot, the perceived impression itself is of overshooting. C is wrong because runway slope does not create lateral displacement illusions. D is wrong because the slope illusion affects perceived approach angle, not the perception of landing firmness. ### Q30: The occurence of a vertigo is most probable when moving the head... ^t40q30 - A) During a climb. - B) During a straight horizontal flight. - C) During a descent. - D) During a turn. **Correct: D)** > **Explanation:** The correct answer is D because moving the head during a turn creates the Coriolis illusion — the semicircular canals are already stimulated by the turn, and adding a head rotation in a different plane simultaneously stimulates additional canals, producing an overwhelming and disorienting sensation of tumbling. A is wrong because a climb alone does not pre-load the semicircular canals the way a turn does. B is wrong because straight and level flight provides no existing vestibular stimulation to conflict with head movement. C is wrong because a descent, like a climb, does not produce the rotational vestibular loading that makes the Coriolis effect so severe. ### Q31: A Grey-out is the result of… ^t40q31 - A) Hypoxia. - B) Positive g-forces. - C) Hyperventilation. - D) Tiredness. **Correct: B)** > **Explanation:** The correct answer is B because grey-out occurs when positive g-forces pull blood away from the head toward the lower body, reducing blood pressure in the retinal arteries and causing progressive loss of colour vision and peripheral vision before full blackout. A is wrong because although hypoxia also affects vision, grey-out specifically refers to the g-force-induced phenomenon. C is wrong because hyperventilation causes tingling and spasms from CO2 depletion, not the characteristic grey visual field. D is wrong because tiredness causes fatigue and reduced alertness, not the acute visual symptoms of grey-out. ### Q32: Visual illusions are mostly caused by… ^t40q32 - A) Colour blindness. - B) Misinterpretation of the brain. - C) Rapid eye movements. - D) Binocular vision. **Correct: B)** > **Explanation:** The correct answer is B because the brain actively constructs perception by interpreting sensory input based on prior experience and expectations, and when environmental cues are ambiguous or unusual — as is common in aviation — the brain's "best guess" can be dangerously wrong. A is wrong because colour blindness is a retinal condition affecting colour discrimination, not a cause of spatial or approach illusions. C is wrong because rapid eye movements (saccades) are normal visual behaviour, not a source of illusions. D is wrong because binocular vision actually improves depth perception and reduces illusions. ### Q33: The average decrease of blood alcohol level for an adult in one hour is approximately… ^t40q33 - A) 0.1 percent. - B) 0.3 percent. - C) 0.03 percent. - D) 0.01 percent. **Correct: D)** > **Explanation:** The correct answer is D because the liver metabolises alcohol at a roughly constant rate of approximately 0.01% (0.1 per mille or 0.1 g/L) blood alcohol concentration per hour, regardless of body weight, food intake, or the type of drink consumed. A is wrong because 0.1% per hour is ten times the actual rate and would mean even heavy intoxication clears in a few hours. B is wrong because 0.3% per hour is thirty times too fast. C is wrong because 0.03% per hour is three times the actual rate. ### Q34: Which answer states a risk factor for diabetes? ^t40q34 - A) Sleep deficiency - B) Overweight - C) Smoking - D) Alcohol consumption **Correct: B)** > **Explanation:** The correct answer is B because overweight and obesity — particularly excess visceral fat — are the strongest modifiable risk factors for type 2 diabetes due to the insulin resistance they cause, and diabetes is a significant concern in aviation medicine because of the risk of hypoglycaemic episodes impairing pilot performance. A is wrong because although sleep deficiency affects general health, it is not a primary risk factor for diabetes. C is wrong because smoking is primarily a cardiovascular and respiratory risk factor. D is wrong because moderate alcohol consumption is not a leading cause of diabetes. ### Q35: A risk factor for decompression sickness is… ^t40q35 - A) Sports. - B) 100 % oxygen after decompression. - C) Scuba diving prior to flight. - D) Smoking. **Correct: C)** > **Explanation:** The correct answer is C because scuba diving causes nitrogen to dissolve into body tissues under high ambient pressure, and if the diver flies before adequate off-gassing time (typically 12-24 hours), the reduced cabin pressure causes dissolved nitrogen to form painful and dangerous bubbles in tissues and blood. A is wrong because normal sporting activity does not load tissues with dissolved nitrogen. B is wrong because breathing 100% oxygen after decompression actually accelerates nitrogen elimination and is a treatment measure. D is wrong because smoking impairs oxygen transport but does not cause nitrogen saturation. ### Q36: Which statement is correct with regard to the short-term memory? ^t40q36 - A) It can store 10 (±5) items for 30 to 60 seconds - B) It can store 5 (±2) items for 1 to 2 minutes - C) It can store 7 (±2) items for 10 to 20 seconds - D) It can store 3 (±1) items for 5 to 10 seconds **Correct: C)** > **Explanation:** The correct answer is C because George Miller's classic research established that short-term (working) memory can hold approximately 7 plus or minus 2 chunks of information for about 10-20 seconds without active rehearsal, which is why pilots must write down ATC clearances and frequencies immediately. A is wrong because both the capacity (10 items) and duration (30-60 seconds) are overstated. B is wrong because the capacity is understated and the duration is too long. D is wrong because both values are too small — the brain can hold more than 3 items. ### Q37: For what approximate time period can the short-time memory store information? ^t40q37 - A) 35 to 50 seconds - B) 3 to 7 seconds - C) 10 to 20 seconds - D) 30 to 40 seconds **Correct: C)** > **Explanation:** The correct answer is C because unrehearsed information in short-term memory decays within approximately 10-20 seconds, which is why aviation procedures emphasise immediate read-back of clearances and writing down critical information. A is wrong because 35-50 seconds significantly overestimates the retention time without rehearsal. B is wrong because 3-7 seconds is too short — even unrehearsed memory lasts somewhat longer. D is wrong because 30-40 seconds exceeds the actual decay time for passively stored items. ### Q38: What is a latent error? ^t40q38 - A) An error which has an immediate effect on the controls - B) An error which only has consequences after landing - C) An error which is made by the pilot actively and consciously - D) An error which stays undetected in the system for a long time **Correct: D)** > **Explanation:** The correct answer is D because in James Reason's error model, latent errors are hidden failures embedded in the system — such as poor design, inadequate procedures, or organisational shortcuts — that remain dormant and undetected until they combine with an active error to cause an incident or accident. A is wrong because an error with immediate effect on controls is an active error, not a latent one. B is wrong because latent errors are defined by their hidden nature, not their timing relative to landing. C is wrong because conscious, deliberate errors are violations, not latent conditions. ### Q39: The ongoing process to monitor the current flight situation is called… ^t40q39 - A) Constant flight check. - B) Situational thinking. - C) Situational awareness. - D) Anticipatory check procedure. **Correct: C)** > **Explanation:** The correct answer is C because situational awareness (SA), as defined by Mica Endsley, is the continuous process of perceiving elements in the environment, comprehending their meaning, and projecting their future state — it is the foundation of sound aeronautical decision-making. A is wrong because "constant flight check" is not a recognised human factors term. B is wrong because "situational thinking" is not the standard terminology used in aviation psychology. D is wrong because "anticipatory check procedure" describes a proactive checklist approach, not the overarching mental model of the flight environment. ### Q40: Regarding the communication model, how can the use of the same code during radio communication be ensured? ^t40q40 - A) By the use of proper headsets - B) By the use of radio phraseology - C) By using radios certified for aviation use only - D) By a particular frequency allocation **Correct: B)** > **Explanation:** The correct answer is B because standardised ICAO radiotelephony phraseology ensures that both sender and receiver share the same unambiguous "code" with pre-defined meanings, minimising the risk of miscommunication in the communication model. A is wrong because headsets improve audio clarity but do not standardise the language or coding of the message. C is wrong because certified radios ensure signal quality, not message coding. D is wrong because frequency allocation manages traffic separation, not the shared understanding of words and phrases. ### Q41: In what different ways can a risk be handled appropriately? ^t40q41 - A) Avoid, reduce, transfer, accept - B) Avoid, ignore, palliate, reduce - C) Ignore, accept, transfer, extrude - D) Extrude, avoid, palliate, transfer **Correct: A)** > **Explanation:** The correct answer is A because the four standard risk management strategies are: Avoid (eliminate the hazard entirely), Reduce (implement controls to lower probability or severity), Transfer (shift the risk to another party such as through insurance), and Accept (consciously acknowledge residual risk when it falls within acceptable limits). B is wrong because "ignore" and "palliate" are not recognised risk management strategies. C is wrong because ignoring risk is never acceptable in aviation, and "extrude" is not a risk management term. D is wrong because neither "extrude" nor "palliate" are legitimate risk management strategies. ### Q42: Under which circumstances is it more likely to accept higher risks? ^t40q42 - A) During flight planning when excellent weather is forecast - B) During check flights due to a high level of nervousness - C) Due to group-dynamic effects - D) If there is not enough information available **Correct: C)** > **Explanation:** The correct answer is C because group dynamics can cause "risky shift" — a well-documented phenomenon where groups tend to accept bolder, riskier decisions than individuals would alone, driven by social pressure, conformity, and diffusion of responsibility. A is wrong because excellent weather actually reduces risk and does not push pilots toward accepting higher risks. B is wrong because nervousness during check flights typically makes pilots more cautious, not more risk-accepting. D is wrong because insufficient information usually promotes caution or deferral rather than acceptance of higher risk. ### Q43: Which dangerous attitudes are often combined? ^t40q43 - A) Self-abandonment and macho - B) Invulnerability and self-abandonment - C) Macho and invulnerability - D) Impulsivity and carefulness **Correct: C)** > **Explanation:** The correct answer is C because the macho attitude ("I can handle anything") and invulnerability ("it won't happen to me") frequently occur together, as both stem from overconfidence and underestimation of personal risk. A is wrong because self-abandonment (resignation) is the opposite of macho — a resigned pilot gives up, while a macho pilot takes on too much. B is wrong because invulnerability and resignation are contradictory mindsets. D is wrong because impulsivity and carefulness are opposites and cannot logically coexist as a combined dangerous attitude. ### Q44: What is an indication for a macho attitude? ^t40q44 - A) Quick resignation in complex and critical situations - B) Careful walkaround procedure - C) Risky flight maneuvers to impress spectators on ground - D) Comprehensive risk assessment when faced with unfamiliar situations **Correct: C)** > **Explanation:** The correct answer is C because the macho attitude is defined by the need to demonstrate daring and skill, often to an audience, and performing risky manoeuvres to impress spectators is a textbook example — the pilot prioritises ego over safety. A is wrong because quick resignation describes the resignation (self-abandonment) hazardous attitude, the opposite of macho. B is wrong because a careful walkaround is a sign of professionalism, not any hazardous attitude. D is wrong because comprehensive risk assessment reflects sound aeronautical decision-making, not a hazardous attitude. ### Q45: Which factor can lead to human error? ^t40q45 - A) Proper use of checklists - B) Double check of relevant actions - C) The bias to see what we expect to see - D) To be doubtful if something looks unclear or ambiguous **Correct: C)** > **Explanation:** The correct answer is C because confirmation bias — the tendency to perceive and interpret information in a way that confirms pre-existing expectations — is a major source of human error, leading pilots to misread instruments, overlook abnormalities, or misidentify visual references. A is wrong because proper checklist use is a countermeasure against error, not a cause. B is wrong because double-checking is an error-trapping technique. D is wrong because healthy doubt and questioning ambiguous information is a protective behaviour that reduces error. ### Q46: Which is the best combination of traits with respect to the individual attitude and behaviour for a pilot? ^t40q46 - A) Introverted - stable - B) Extroverted - stable - C) Extroverted - unstable - D) Introverted - unstable **Correct: B)** > **Explanation:** The correct answer is B because extroversion supports effective communication, assertiveness, and crew coordination essential for CRM, while emotional stability ensures the pilot remains calm, consistent, and rational under pressure. A is wrong because although stability is positive, introversion can hinder the assertive communication and teamwork skills needed in cockpit environments. C is wrong because emotional instability leads to erratic performance and overreaction under stress. D is wrong because both introversion and instability are disadvantageous for the demands of piloting. ### Q47: Complacency is a risk due to… ^t40q47 - A) Better training options for young pilots. - B) The high error rate of technical systems. - C) The high number of mistakes normally made by humans. - D) Increased cockpit automation. **Correct: D)** > **Explanation:** The correct answer is D because as cockpit automation becomes more sophisticated and reliable, pilots tend to reduce their active monitoring, lose vigilance, and allow their manual flying skills to degrade — this is automation complacency, and it becomes critically dangerous when the automation fails unexpectedly. A is wrong because better training options should reduce complacency, not cause it. B is wrong because unreliable systems would actually increase vigilance, not reduce it. C is wrong because a high human error rate is a general human factors issue, not the specific cause of complacency. ### Q48: The ideal level of arousal is at which point in the diagram? See figure (HPL-002) P = Performance A = Arousal / Stress... ^t40q48 ![Yerkes-Dodson Curve](figures/t40_q48.svg) - A) Point D - B) Point C - C) Point B - D) Point A **Correct: C)** > **Explanation:** The correct answer is C (Point B) because on the Yerkes-Dodson inverted-U curve, Point B sits at the peak where moderate arousal produces maximum performance. A is wrong because Point D represents excessive arousal where performance has collapsed due to overwhelming stress. B is wrong because Point C is past the optimal peak, in the declining performance zone. D is wrong because Point A represents too little arousal (boredom, under-stimulation), where performance suffers from lack of alertness and motivation. ### Q49: At which point in the diagram will a pilot find himself to be overstrained? See figure (HPL-002) P = Performance A = Arousal / Stress... ^t40q49 - A) Point B - B) Point D - C) Point C - D) Point A **Correct: B)** > **Explanation:** The correct answer is B (Point D) because it lies at the far right of the Yerkes-Dodson curve where excessive arousal causes performance to collapse — the pilot is overstrained, experiencing cognitive overload, tunnel vision, and potentially panic. A is wrong because Point B is the optimal arousal level with peak performance. C is wrong because Point C, while past optimal, still represents declining but not yet collapsed performance. D is wrong because Point A represents under-arousal (boredom), the opposite of being overstrained. ### Q50: Which of these qualities are influenced by stress? 1. Attention 2. Concentration 3. Responsiveness 4. Memory ^t40q50 - A) 1 - B) .1, 2, 3 - C) 1, 2, 3, 4 - D) .2, 4 **Correct: C)** > **Explanation:** The correct answer is C because stress affects all four cognitive functions: attention narrows (tunnel vision), concentration becomes fragmented, responsiveness changes (initially faster then degraded under extreme stress), and memory — especially working memory encoding and retrieval — is impaired by elevated cortisol. A is wrong because it only includes attention, ignoring the effects on concentration, responsiveness, and memory. B is wrong because it excludes memory, which is significantly affected. D is wrong because it omits attention and responsiveness, both of which are demonstrably impacted by stress.