AQT AQT Aviation Medical & Human Factors 1 — Questions and Answers
Question 1: What is the minimum vision requirement (uncorrected or corrected) for distant vision in a military aviation medical exam?
- 20/100 correctable to 20/20
- 20/400 correctable to 20/20 (Correct answer)
- 20/20 uncorrected only
- 20/50 uncorrected
Correct answer: 20/400 correctable to 20/20
Applicants for military aviation must have distant vision correctable to 20/20 in each eye; uncorrected vision as poor as 20/400 may be acceptable depending on the service branch.
Question 2: What is hypoxia in the context of aviation?
- Excess oxygen in the bloodstream
- Oxygen deficiency in body tissues (Correct answer)
- Nitrogen narcosis from high pressure
- Carbon monoxide poisoning
Correct answer: Oxygen deficiency in body tissues
Hypoxia is a state of oxygen deficiency in body tissues that impairs brain function and can incapacitate a pilot, particularly at high altitudes.
Question 3: At approximately what altitude does time of useful consciousness (TUC) become critically short without supplemental oxygen?
- 10,000 feet
- 18,000 feet
- 25,000 feet (Correct answer)
- 43,000 feet
Correct answer: 25,000 feet
At 25,000 feet, time of useful consciousness is only 3–5 minutes, making rapid access to supplemental oxygen essential.
Question 4: Which spatial disorientation illusion involves a false sensation of wings-level flight when actually banked?
- The leans (Correct answer)
- Graveyard spiral
- Coriolis illusion
- Elevator illusion
Correct answer: The leans
The leans occur when a pilot's vestibular system has adapted to a gradual bank and incorrectly senses wings-level flight while the aircraft is actually banked.
Question 5: What is the IMSAFE checklist used for in aviation?
- Pre-flight aircraft inspection
- Pilot self-assessment of fitness to fly (Correct answer)
- Instrument approach procedure review
- Emergency communication protocol
Correct answer: Pilot self-assessment of fitness to fly
IMSAFE (Illness, Medication, Stress, Alcohol, Fatigue, Emotion) is a personal checklist pilots use to assess their own fitness to fly on a given day.
Question 6: What effect does alcohol have on hypoxia susceptibility?
- Alcohol reduces hypoxia risk
- Alcohol has no effect on hypoxia
- Alcohol increases susceptibility to hypoxia (Correct answer)
- Alcohol only affects hypoxia at sea level
Correct answer: Alcohol increases susceptibility to hypoxia
Alcohol impairs the body's ability to utilize oxygen and increases susceptibility to hypoxia, even at altitudes where unimpaired pilots are unaffected.
AQT AQT Aviation Medical & Human Factors 1
What is the minimum vision requirement (uncorrected or corrected) for distant vision in a military aviation medical exam?