Human Performance and Limitations - Kazakhstan PPL
Human Performance and Limitations tests whether you can recognise and manage the pilot as a system: physiology, perception, decision-making, and single-pilot error management. Kazakhstan PPL questions often use scenario form because the subject is about judgement, not memorising definitions.
Physiology
- Hypoxia: headache, euphoria, impaired judgement; time of useful consciousness falls with altitude. Supplemental oxygen rules apply above 10,000 ft; check AAK rules.
- Hyperventilation can mimic hypoxia; slower breathing helps, but do not assume it is hyperventilation.
- Carbon monoxide is odourless; heater leaks cause headache and drowsiness.
- Dehydration, fatigue, and cold degrade performance; use IMSAFE before flight.
Perception and decision-making
Spatial disorientation occurs when visual cues conflict with vestibular cues; trust instruments. Black-hole approach at night causes low approaches. Use a decision model such as DODAR and communicate.
Worked example
On a dark night, runway lights appear higher than expected and you feel a sink. Reasoning: black-hole illusion makes the runway appear closer/higher; correcting by pushing lowers the aircraft. The correct action is to fly the approach profile by instruments and go around if unstable.
Traps
Confusing hypoxia with hyperventilation; ignoring CO; pressing on with fatigue; believing 'I can handle it' after alcohol or medication.