Sport Pilot for Helicopter - Simplified Flight Controls › I. Preflight Preparation › Task H. Human Factors

SH.I.H.K1a

Knowledge

Symptoms, recognition, causes, effects, and corrective actions associated with aeromedical and physiological issues, including:

Hypoxia

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Get a short, cited explanation of this element written from the FAA handbooks: the core idea, the numbers that matter, common test traps, and a quick self-check.

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Pilot's Handbook of Aeronautical Knowledge p. 17-3
Chapter 17: Aeromedical Factors › Health and Physiological Factors Affecting Pilot Performance › Hypoxic Hypoxia
Hypoxia Hypoxia means “reduced oxygen” or “not enough oxygen.” Although any tissue will die if deprived of oxygen long enough, the greatest concern regarding hypoxia during flight is lack of oxygen to the brain, since it is particularly vulnerable ... oxygen deprivation. Any reduction in mental function while flying can result in life-threatening errors. Hypoxia can be caused by several factors, including an insufficient supply of oxygen, inadequate transportation of oxygen, or the inability of the body tissues…
Pilot's Handbook of Aeronautical Knowledge p. 17-4
Chapter 17: Aeromedical Factors › Health and Physiological Factors Affecting Pilot Performance › Treatment of Hypoxia
Treatment of Hypoxia Treatment for hypoxia includes flying at lower altitudes and/ or using supplemental oxygen. All pilots are susceptible to the effects of oxygen starvation, regardless of physical endurance or acclimatization. When flying at high altitudes, it is paramount ... that oxygen be used to avoid the effects of hypoxia. The term “time of useful consciousness” describes the maximum time the pilot has to make rational, life-saving decisions and carry them out at a given altitude without supplemental oxygen…
Pilot's Handbook of Aeronautical Knowledge p. 17-3
Chapter 17: Aeromedical Factors › Health and Physiological Factors Affecting Pilot Performance › Stagnant Hypoxia
Stagnant Hypoxia Stagnant means “not flowing,” and stagnant hypoxia or ischemia results when the oxygen-rich blood in the lungs is not moving, for one reason or another, to the tissues that need it. An arm or leg “going ... sleep” because the blood flow has accidentally been shut off is one form of stagnant hypoxia. This kind of hypoxia can also result from shock, the heart failing to pump blood effectively, or a constricted artery. During flight, stagnant hypoxia…
Pilot's Handbook of Aeronautical Knowledge p. 17-3
Chapter 17: Aeromedical Factors › Health and Physiological Factors Affecting Pilot Performance › Hypemic Hypoxia
Hypemic Hypoxia Hypemic hypoxia occurs when the blood is not able to take up and transport a sufficient amount of oxygen to the cells in the body. Hypemic means “not enough blood.” This type of hypoxia is a result ... blood volume (from severe bleeding), or it may result from certain blood diseases, such as anemia. More often, hypemic hypoxia occurs because hemoglobin, the actual blood molecule that transports oxygen, is chemically unable to bind oxygen molecules. The most common…
Pilot's Handbook of Aeronautical Knowledge p. 17-4
Chapter 17: Aeromedical Factors › Histotoxic Hypoxia › Symptoms of Hypoxia
Symptoms of Hypoxia High-altitude flying can place a pilot in danger of becoming hypoxic. Oxygen starvation causes the brain and other vital organs to become impaired. The first symptoms of hypoxia can include euphoria and a carefree feeling. With ... increased oxygen starvation, the extremities become less responsive and flying becomes less coordinated. The symptoms of hypoxia vary with the individual, but common symptoms include: • Cyanosis (blue fingernails and lips) • Headache • Decreased response to stimuli and increased reaction time • Impaired…