ATSC 113 Competency Certification Study Guide Exam
Questions with Certified for Accuracy Answers 2025/2026
Rain - correct answer - reduces visibility
Pressure - correct answer The amount of force that the air is pushing
against each square meter of an object
- measured in pascals using a barometer
Density - correct answer The amount of mass of air in a cubic meter
- measured in kg/m3
What is standar atmophere? - correct answer The known pressure,
temperature and density for any given altitude
How is pressure and density related in the atmosphere? - correct answer
The closer you are to sea-level, the higher the pressure and the higher the
density
What is hypoxia? - correct answer Deficiency in the amount of oxygen
reaching the tissues
- leads to confusing and unconsciousness
When can pilots start experiencing hypoxia? - correct answer At about 4
km above sea-level
What are some symptoms of hypoxia below 15,000 ft? - correct answer -
impaired/reduced judgement
,- headache
- euporia
- dizziness
- belligerence
What are some symptoms of hypoxia above 15,000 ft? - correct answer -
tunnel vision
- cyanoisis
- unconsciousness
- death
What is density altitude? - correct answer The altitude relative to standard
atmospheric conditions at which the air density would be equal to the
indicated air density.
- hot/low dense air is harder to fly in so it may seem like you are flying at a
higher altitude
How is density altitude used by pilots? - correct answer Pressure, density
& temp are used to estimate the:
- climb performance of an aircraft
- how much runway is needed
- can the air craft fly fast and/or high enough
What is a crosswind? - correct answer Winds both right and left
- fine for flying (pilot can compensate by "grabbing")
- bad for take off/landing
, What is a headwind? - correct answer Wind that blows into your face
- good for takeoff/landing (needs less runway)
- bad for flying (more fuel)
What is a tailwind? - correct answer Wind that blows behind you
- good for flying in the air (less fuel)
- bad for taking off/landing (need more runway)
What is wind shear? - correct answer The change of wind speed and or
wind direction with altitude
What are some causes of wind shear? - correct answer - weather systems
- wind flowing across mountains
- associated with turbulence behind obstacles
- other large aircrafts landing or taking off
What are some types of wind shears related to weather systems? - correct
answer - synoptic scale shear (low pressure, fronts, strong surface winds)
- convetive shear (thunderstroms, microbursts, gust fronts)
What are some types of wind shears related to wind flowing across a
mountain? - correct answer - mountain wave shear (includes rotors)
- gap winds (channeling of winds through valleys)
- Chinooks/Foehn (warm, dry downslope wind travels over cold layer and
over mountain)
- Boras (mostly warm, dry air but some of cold layer spills over mountain)
Questions with Certified for Accuracy Answers 2025/2026
Rain - correct answer - reduces visibility
Pressure - correct answer The amount of force that the air is pushing
against each square meter of an object
- measured in pascals using a barometer
Density - correct answer The amount of mass of air in a cubic meter
- measured in kg/m3
What is standar atmophere? - correct answer The known pressure,
temperature and density for any given altitude
How is pressure and density related in the atmosphere? - correct answer
The closer you are to sea-level, the higher the pressure and the higher the
density
What is hypoxia? - correct answer Deficiency in the amount of oxygen
reaching the tissues
- leads to confusing and unconsciousness
When can pilots start experiencing hypoxia? - correct answer At about 4
km above sea-level
What are some symptoms of hypoxia below 15,000 ft? - correct answer -
impaired/reduced judgement
,- headache
- euporia
- dizziness
- belligerence
What are some symptoms of hypoxia above 15,000 ft? - correct answer -
tunnel vision
- cyanoisis
- unconsciousness
- death
What is density altitude? - correct answer The altitude relative to standard
atmospheric conditions at which the air density would be equal to the
indicated air density.
- hot/low dense air is harder to fly in so it may seem like you are flying at a
higher altitude
How is density altitude used by pilots? - correct answer Pressure, density
& temp are used to estimate the:
- climb performance of an aircraft
- how much runway is needed
- can the air craft fly fast and/or high enough
What is a crosswind? - correct answer Winds both right and left
- fine for flying (pilot can compensate by "grabbing")
- bad for take off/landing
, What is a headwind? - correct answer Wind that blows into your face
- good for takeoff/landing (needs less runway)
- bad for flying (more fuel)
What is a tailwind? - correct answer Wind that blows behind you
- good for flying in the air (less fuel)
- bad for taking off/landing (need more runway)
What is wind shear? - correct answer The change of wind speed and or
wind direction with altitude
What are some causes of wind shear? - correct answer - weather systems
- wind flowing across mountains
- associated with turbulence behind obstacles
- other large aircrafts landing or taking off
What are some types of wind shears related to weather systems? - correct
answer - synoptic scale shear (low pressure, fronts, strong surface winds)
- convetive shear (thunderstroms, microbursts, gust fronts)
What are some types of wind shears related to wind flowing across a
mountain? - correct answer - mountain wave shear (includes rotors)
- gap winds (channeling of winds through valleys)
- Chinooks/Foehn (warm, dry downslope wind travels over cold layer and
over mountain)
- Boras (mostly warm, dry air but some of cold layer spills over mountain)
