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Why is hypoxia particularly dangerous to a pilot?
Choices
✓ Its early symptoms are subtle and impair judgment, so the pilot may not noticecorrect
Euphoria and impaired judgment can mask the onset before the pilot reacts.
It causes immediate, obvious loss of consciousness with no warning
The danger is the subtlety of onset, not an immediate blackout.
It only occurs above 40,000 feet
Hypoxia can affect performance well below extreme altitudes.
It improves reaction time temporarily
Hypoxia degrades performance; it does not improve it.
Why
Hypoxia is dangerous because its early symptoms — euphoria, impaired judgment, and tingling — are subtle, so the pilot may not recognize the impairment until it is advanced.
FAA source: PHAK Ch. 17 / hypoxiabrowse the reference library →
Original study question written for this course — representative of FAA knowledge-test topics, not an actual current FAA exam question.