A human brain slowly deprived of its normal oxygen supply, called hypoxia— especially if it happens to someone in command of an airplane–can create strange behavior the affected aviator may not even recognize. The FAA says the most common causes of hypoxia in pilots are: flying non-pressurized aircraft above 10,000 ft without supplemental oxygen, rapid decompression during flight, pressurization system malfunction, or oxygen system malfunction.
Hypoxia Played Role in Canadian Navajo Accident
Key Takeaways:
- Hypoxia, a gradual deprivation of oxygen at altitude, significantly impairs a pilot's cognitive function, judgment, and motor skills, often without the pilot recognizing the onset of symptoms.
- A 2018 Piper Navajo crash, which killed two, was attributed to the pilot not continuously using supplemental oxygen above 13,000 feet, despite its availability, leading to unrecognized hypoxia and loss of aircraft control.
- The investigation highlighted the critical importance of continuous supplemental oxygen use at high altitudes and the need for practical hypoxia training to ensure pilots can recognize and respond to its insidious onset.
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