QUESTIONS DEFINITIVE ANSWERS LATEST GRADED A+ 2026
When the seat belt sign is illuminated, what must cabin crew
do?
-make a pa
-seat belt check
-ensure lavatories are clear
-ensure infants in carriers or bassinets are removed and held
in lap
Atmospheric pressure halves every
18,000 feet of altitude
What is hypoxic hypoxia?
The most common form of hypoxia encountered by aviators
Insufficient oxygen available to lungs
-smoking exacerbates
What is stagnant hypoxia?
pg. 1
,Reduction in the bloods ability to circulate properly in the body
to get tissues adequate oxygen
Cold exposure
What is anemic hypoxia?
When the blood's oxygen carrying capacity is greatly reduced
What is histotoxic hypoxia?
Results from an interference of body tissues to use oxygen
(alcohol, narcotics, cyanide interfere with cell's ability to use
an adequate supply of oxygen)
Usually occurs from: alcohol abuse, drugs, poisons.
What is the toc?
Time of useful consciousness
What is the toc at 20,000 ft?
4 minutes
pg. 2
, What is the tuc at 40,000 feet?
20 seconds
What is decompression sickness?
A condition characterized by a variety of symptoms resulting
from exposure to low barometric pressures
Uncommon under 18,000 feet unless scuba diving
What are the symptoms of decompression sickness?
Joint pain
Dizziness
Headache
Loss of cognitive function
Fatigue
Numbness/tingling
Weakness in arms and/or legs
Skin rashes/discolouration
What factors impact the risk of hypoxia?
Age
Sex
Fitness
pg. 3