Helicopter Ground School UPDATED
ACTUAL Exam Questions and CORRECT
Answers
Name the 3 gauges that comprise the Pitot Static System - CORRECT ANSWER - Air
Speed Indicator, Altimeter, Vertical Speed Indicator
If the Pitot Tube becomes blocked, what will occur? - CORRECT ANSWER - Zero air
speed indication
If the Pitot Tube and the drain become blocked, what will occur? - CORRECT ANSWER -
Air Speed will remain constant. ASI will show higher readings if in a climb and lower readings if
descending due to air pressure.
A static port blockage affects which gauge(s)? - CORRECT ANSWER - Air Speed
Indicator, Altimeter, Vertical Speed Indicator
If there is a static port blockage, what emergency procedure can be performed? - CORRECT
ANSWER - Break the glass on the Vertical Speed Indicator to create an alternate port.
If a static port blockage occurs and the emergency procedure is performed, how will it affect the
gauges? - CORRECT ANSWER - Air Speed Indicator and Altimeter will show slightly
high, and Vertical Speed Indicator will briefly show a climb but will then level out (if it still
works).
Does the Vertical Speed Indicator show real time information? - CORRECT ANSWER - It
does not, it lags less than 5 seconds.
Define what a compass is - CORRECT ANSWER - Fundamental source of directional
indication which requires no power source
, Name the main parts of the aircraft compass - CORRECT ANSWER - Sealed outer case,
pivot assembly, float containing 2 or more magnets, luber line, compass fluid (acid free white
kerosene or similar).
Define VDMONA - CORRECT ANSWER - Variation, Deviation, Magnetic, Oscillation,
Northerly Turning Errors, Acceleration/Deceleration Errors
Explain Compass Deviation Errors - CORRECT ANSWER - Position of magnetic north as
a result of electrical interference from inside the aircraft. Usually when turning to the East or
West heading. Compass correction card in the aircraft shows the deviation errors.
Explain Variation Errors - CORRECT ANSWER - The angular difference between true
North and magnetic North. Identified as Isogonic Lines on a chart. East is least, West is best.
Explain Magnetic Dip - CORRECT ANSWER - Compass tends to dip toward the
magnetic pole, most dominate as latitude increases
What is the Compass Acceleration/Deceleration Memory Aid? - CORRECT ANSWER -
ANDS: Accelerate North, Decelerate South
What is the Compass Turning Error Memory Aid? - CORRECT ANSWER - UNOS:
Undershoot North, Overshoot South
What is Compass Oscillation Error? - CORRECT ANSWER - The combination of all of
the other errors, and it results in the compass swinging back and forth around the heading being
flown. Turbulence causes compass to "bounce" or move in the container.
What are the 4 forces of flight? - CORRECT ANSWER - Lift, Weight, Thrust, Drag
What are the aircraft principal axes? - CORRECT ANSWER - Pitch (lateral), Roll
(longitudinal), Yaw (vertical)
ACTUAL Exam Questions and CORRECT
Answers
Name the 3 gauges that comprise the Pitot Static System - CORRECT ANSWER - Air
Speed Indicator, Altimeter, Vertical Speed Indicator
If the Pitot Tube becomes blocked, what will occur? - CORRECT ANSWER - Zero air
speed indication
If the Pitot Tube and the drain become blocked, what will occur? - CORRECT ANSWER -
Air Speed will remain constant. ASI will show higher readings if in a climb and lower readings if
descending due to air pressure.
A static port blockage affects which gauge(s)? - CORRECT ANSWER - Air Speed
Indicator, Altimeter, Vertical Speed Indicator
If there is a static port blockage, what emergency procedure can be performed? - CORRECT
ANSWER - Break the glass on the Vertical Speed Indicator to create an alternate port.
If a static port blockage occurs and the emergency procedure is performed, how will it affect the
gauges? - CORRECT ANSWER - Air Speed Indicator and Altimeter will show slightly
high, and Vertical Speed Indicator will briefly show a climb but will then level out (if it still
works).
Does the Vertical Speed Indicator show real time information? - CORRECT ANSWER - It
does not, it lags less than 5 seconds.
Define what a compass is - CORRECT ANSWER - Fundamental source of directional
indication which requires no power source
, Name the main parts of the aircraft compass - CORRECT ANSWER - Sealed outer case,
pivot assembly, float containing 2 or more magnets, luber line, compass fluid (acid free white
kerosene or similar).
Define VDMONA - CORRECT ANSWER - Variation, Deviation, Magnetic, Oscillation,
Northerly Turning Errors, Acceleration/Deceleration Errors
Explain Compass Deviation Errors - CORRECT ANSWER - Position of magnetic north as
a result of electrical interference from inside the aircraft. Usually when turning to the East or
West heading. Compass correction card in the aircraft shows the deviation errors.
Explain Variation Errors - CORRECT ANSWER - The angular difference between true
North and magnetic North. Identified as Isogonic Lines on a chart. East is least, West is best.
Explain Magnetic Dip - CORRECT ANSWER - Compass tends to dip toward the
magnetic pole, most dominate as latitude increases
What is the Compass Acceleration/Deceleration Memory Aid? - CORRECT ANSWER -
ANDS: Accelerate North, Decelerate South
What is the Compass Turning Error Memory Aid? - CORRECT ANSWER - UNOS:
Undershoot North, Overshoot South
What is Compass Oscillation Error? - CORRECT ANSWER - The combination of all of
the other errors, and it results in the compass swinging back and forth around the heading being
flown. Turbulence causes compass to "bounce" or move in the container.
What are the 4 forces of flight? - CORRECT ANSWER - Lift, Weight, Thrust, Drag
What are the aircraft principal axes? - CORRECT ANSWER - Pitch (lateral), Roll
(longitudinal), Yaw (vertical)
