AVIT 222 EXAM STUDY QUESTIONS AND
CORRECT ANSWERS!!
What are the different types of altitudes?
Indicated - altitude as read off of the altimeter with appropriate setting
Pressure - vertical distance above the standard datum plane: a theoretical plane where sea level
pressure exists. It can be found by setting 29.92 in Kollsman window and reading the altitude.
Density - Pressure altitude corrected for non-standard temp.
True - vertical distance above sea level (MSL)
Absolute - vertical distance above terrain (AGL)
How does the Vertical Speed Indicator (VSI) function?
Both the aneroid wafer and the casing are connected to the static port. The case is connected
through a calibrated leak which allows the pressure to change slower than the wafer.
Compares current pressure to the pressure a few seconds before (the difference is the VSI)
Climb: wafer pressure decreases, case pressure decreases slower, wafer is compressed and
indicates climb
Descent: wafer pressure increases, case pressure increases slower, wafer expands and indicates
descent
How does the Airspeed Indicator operate?
Measures the difference between ram pressure from the pitot head (inside of wafer) and ambient
pressure (outside wafer and inside casing) from the static port. The difference gets you dynamic
pressure which gives you airspeed.
,What are the different types of airspeed?
Indicated airspeed (IAS)- airspeed read directly off the instrument in the cockpit
Calibrated airspeed (CAS)- indicated airspeed corrected for installation and instrument errors
Equivalent airspeed- CAS corrected for compressibility error
True airspeed (TAS)- actual speed you are moving through the air. EAS corrected for
nonstandard temperature and pressure
Ground speed- actual speed over the ground. TAS corrected for wind conditions
What does the white arc on an airspeed indicator mean?
Flap operating range
What is the bottom of the white arc on the airspeed indicator?
Vso (stall speed with flaps)
What is the top of the white arc on the airspeed indicator?
Vfe (maximum flaps extended speed)
What does the green arc on the airspeed indicator mean?
Normal Operating Range
What is the bottom of the green arc on the airspeed indicator?
Vs (stall speed without flaps)
What is the top of the green arc on the airspeed indicator?
Vno (normal operating speed)
What does the yellow arc on the airspeed indicator mean?
Caution Range, only fly in smooth air and with caution
, What is the bottom of the yellow on the airspeed indicator?
Vno (normal operating speed)
What is the top of the yellow arc on the airspeed indicator?
Vne (never exceed speed)
What does the red line on the airspeed indicator mean?
Vne (never exceed speed)
Vso
Stall speed with flaps
45 KIAS
Vs
Stall Speed Without Flaps
50 KIAS
Vx
Best Angle of Climb
64 KIAS
Vy
Best Rate of Climb
76 KIAS
Vfe
Maximum Flaps Extended Speed
102 KIAS
Vo
Maneuverability Speed
113 KIAS (2550) - 95 KIAS (1917)
CORRECT ANSWERS!!
What are the different types of altitudes?
Indicated - altitude as read off of the altimeter with appropriate setting
Pressure - vertical distance above the standard datum plane: a theoretical plane where sea level
pressure exists. It can be found by setting 29.92 in Kollsman window and reading the altitude.
Density - Pressure altitude corrected for non-standard temp.
True - vertical distance above sea level (MSL)
Absolute - vertical distance above terrain (AGL)
How does the Vertical Speed Indicator (VSI) function?
Both the aneroid wafer and the casing are connected to the static port. The case is connected
through a calibrated leak which allows the pressure to change slower than the wafer.
Compares current pressure to the pressure a few seconds before (the difference is the VSI)
Climb: wafer pressure decreases, case pressure decreases slower, wafer is compressed and
indicates climb
Descent: wafer pressure increases, case pressure increases slower, wafer expands and indicates
descent
How does the Airspeed Indicator operate?
Measures the difference between ram pressure from the pitot head (inside of wafer) and ambient
pressure (outside wafer and inside casing) from the static port. The difference gets you dynamic
pressure which gives you airspeed.
,What are the different types of airspeed?
Indicated airspeed (IAS)- airspeed read directly off the instrument in the cockpit
Calibrated airspeed (CAS)- indicated airspeed corrected for installation and instrument errors
Equivalent airspeed- CAS corrected for compressibility error
True airspeed (TAS)- actual speed you are moving through the air. EAS corrected for
nonstandard temperature and pressure
Ground speed- actual speed over the ground. TAS corrected for wind conditions
What does the white arc on an airspeed indicator mean?
Flap operating range
What is the bottom of the white arc on the airspeed indicator?
Vso (stall speed with flaps)
What is the top of the white arc on the airspeed indicator?
Vfe (maximum flaps extended speed)
What does the green arc on the airspeed indicator mean?
Normal Operating Range
What is the bottom of the green arc on the airspeed indicator?
Vs (stall speed without flaps)
What is the top of the green arc on the airspeed indicator?
Vno (normal operating speed)
What does the yellow arc on the airspeed indicator mean?
Caution Range, only fly in smooth air and with caution
, What is the bottom of the yellow on the airspeed indicator?
Vno (normal operating speed)
What is the top of the yellow arc on the airspeed indicator?
Vne (never exceed speed)
What does the red line on the airspeed indicator mean?
Vne (never exceed speed)
Vso
Stall speed with flaps
45 KIAS
Vs
Stall Speed Without Flaps
50 KIAS
Vx
Best Angle of Climb
64 KIAS
Vy
Best Rate of Climb
76 KIAS
Vfe
Maximum Flaps Extended Speed
102 KIAS
Vo
Maneuverability Speed
113 KIAS (2550) - 95 KIAS (1917)
