12 free practice questions from the 237 in this chapter of StudyWren Aviation. Pick an answer and check it to see the explanation and its FAA source. Part of the free Private Pilot practice test.
HypoxiaPAR-12-002
After a long winter flight with the cabin heater running, a pilot is found to have carbon monoxide attached to much of his hemoglobin, so his blood could not carry enough oxygen. Which type of hypoxia did he experience?
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The answer is A: Hypemic hypoxia
Hypemic ('not enough blood') hypoxia means the blood cannot take up and transport enough oxygen. The PHAK calls CO poisoning the most common form; anemia and blood loss are other causes.
Hypemic ('not enough blood') hypoxia means the blood cannot take up and transport enough oxygen. The PHAK calls CO poisoning the most common form; anemia and blood loss are other causes.
A continuous-flow system would use about 1,200 liters of oxygen on a planned flight. The PHAK states a pulse-demand system can reduce the oxygen needed by 50 to 85 percent. About how much would a pulse-demand system need for the same flight?
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The answer is C: 180 to 600 liters
A 50-85 percent reduction leaves 15-50 percent of the original need: 1,200 x 0.15 = 180 L and 1,200 x 0.50 = 600 L. The 600-1,020 L range is the amount saved, not the amount needed.
A 50-85 percent reduction leaves 15-50 percent of the original need: 1,200 x 0.15 = 180 L and 1,200 x 0.50 = 600 L. The 600-1,020 L range is the amount saved, not the amount needed.
Two pilots share a flight in an airplane with a slow exhaust leak. One is a heavy smoker. Why might the smoker develop carbon monoxide symptoms sooner?
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The answer is B: Smoking already raises the baseline level of CO bound to hemoglobin
Tobacco smoke itself causes CO poisoning. The CAMI brochure notes people in polluted urban areas may carry 3-10 percent carboxyhemoglobin and a cigar smoker up to 15 percent, so a smoker starts with less reserve and reaches symptomatic levels sooner.
The answer is B: Smoking already raises the baseline level of CO bound to hemoglobin
Tobacco smoke itself causes CO poisoning. The CAMI brochure notes people in polluted urban areas may carry 3-10 percent carboxyhemoglobin and a cigar smoker up to 15 percent, so a smoker starts with less reserve and reaches symptomatic levels sooner.
An abrupt change from a climb to straight-and-level flight can create the illusion of tumbling backwards, prompting the pilot to push abruptly into a nose-low attitude. This is the
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The answer is C: inversion illusion
The inversion illusion results from the otolith organs being stimulated by the abrupt level-off. AIM 8-1-5 notes the pilot's nose-low push may intensify the illusion.
The inversion illusion results from the otolith organs being stimulated by the abrupt level-off. AIM 8-1-5 notes the pilot's nose-low push may intensify the illusion.
The terrain under your final approach path rises toward a level runway. If you don't recognize the resulting illusion, what will your approach probably look like?
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The answer is A: Lower than normal, because you will think you are high
Perception: upsloping approach terrain, like an upsloping runway, makes the airplane seem higher than it is. Error: the pilot pitches down into a lower, dragged-in approach and risks landing or flaring short of the runway.
Why not ?
Source: AIM 8-1-5·FAA CAMI brochure 'Spatial Disorientation: Visual Illusions'·ACS PA.I.H
The answer is A: Lower than normal, because you will think you are high
Perception: upsloping approach terrain, like an upsloping runway, makes the airplane seem higher than it is. Error: the pilot pitches down into a lower, dragged-in approach and risks landing or flaring short of the runway.
Source: AIM 8-1-5·FAA CAMI brochure 'Spatial Disorientation: Visual Illusions'·ACS PA.I.H
A student pilot concentrates so intently on the touchdown point during a night landing that she ignores other cues and loses awareness of everything else. The PHAK calls this
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The answer is A: fascination (fixation)
Fascination, or fixation, occurs when pilots ignore orientation cues and fix their attention on a goal or object, such as an instrument or the landing point. At night it is especially dangerous because ground-closure rates are hard to judge.
Fascination, or fixation, occurs when pilots ignore orientation cues and fix their attention on a goal or object, such as an instrument or the landing point. At night it is especially dangerous because ground-closure rates are hard to judge.
According to the AIM, a deterioration in night vision from reduced oxygen can occur at cabin pressure altitudes as low as
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The answer is C: 5,000 feet
AIM 8-1-2 says night vision deterioration occurs at cabin altitudes as low as 5,000 feet (the PHAK says night vision declines measurably above about 4,000 feet without oxygen) because the rods are very sensitive to oxygen lack. That's why oxygen is recommended above 5,000 feet at night.
AIM 8-1-2 says night vision deterioration occurs at cabin altitudes as low as 5,000 feet (the PHAK says night vision declines measurably above about 4,000 feet without oxygen) because the rods are very sensitive to oxygen lack. That's why oxygen is recommended above 5,000 feet at night.
The answer is C: Nausea, dizziness, paleness, sweating, and vomiting
The PHAK lists general discomfort, nausea, dizziness, paleness, sweating, and vomiting. Tingling and spasms suggest hyperventilation, and itching with joint pain suggests decompression sickness.
The answer is C: Nausea, dizziness, paleness, sweating, and vomiting
The PHAK lists general discomfort, nausea, dizziness, paleness, sweating, and vomiting. Tingling and spasms suggest hyperventilation, and itching with joint pain suggests decompression sickness.
You took a sedating allergy medication labeled 'take one tablet every 12 hours,' and no half-life information is available. Using the FAA's five-dosing-interval guidance, how long should you wait after the last dose before flying?
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The answer is A: 60 hours
5 x 12 hours = 60 hours. When pharmacologic half-life information is not available, the CAMI guidance uses five times the maximal dosing interval.
Why not ?
Source: FAA CAMI brochure 'Medications and Flying'·ACS PA.I.H
The PHAK states most people become thirsty after losing about 2 percent of total body weight to dehydration. For a 175-pound pilot, about how much weight loss is that?
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The answer is B: 3.5 pounds
175 lb x 0.02 = 3.5 lb. By the time thirst appears at that level, the pilot is already behind on fluids. 17.5 lb would be 10 percent, and 0.35 lb would be 0.2 percent.
175 lb x 0.02 = 3.5 lb. By the time thirst appears at that level, the pilot is already behind on fluids. 17.5 lb would be 10 percent, and 0.35 lb would be 0.2 percent.
You finished a dive requiring decompression stops (controlled ascent) at 1500 Saturday and plan to fly at 4,500 feet MSL. Per the AIM, what is the earliest recommended departure?
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The answer is A: 1500 Sunday
After a dive that required a controlled ascent, the AIM recommends at least 24 hours before flying even at altitudes up to 8,000 feet: 1500 Saturday + 24 hours = 1500 Sunday. 0300 Sunday reflects the 12-hour no-decompression rule, which does not apply.
After a dive that required a controlled ascent, the AIM recommends at least 24 hours before flying even at altitudes up to 8,000 feet: 1500 Saturday + 24 hours = 1500 Sunday. 0300 Sunday reflects the 12-hour no-decompression rule, which does not apply.
According to the FAA CAMI, at roughly what intensity can impulse or blast noise rupture the eardrum?
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The answer is A: About 140 dB
CAMI lists ear discomfort at about 120 dB, ear pain at about 130 dB, and eardrum rupture at about 140 dB. Normal conversation is about 60 to 65 dB, and 90 dB is the OSHA 8-hour limit.
Why not ?
Source: FAA CAMI brochure 'Hearing and Noise in Aviation'·ACS PA.I.H
CAMI lists ear discomfort at about 120 dB, ear pain at about 130 dB, and eardrum rupture at about 140 dB. Normal conversation is about 60 to 65 dB, and 90 dB is the OSHA 8-hour limit.
Source: FAA CAMI brochure 'Hearing and Noise in Aviation'·ACS PA.I.H
