ATSC 231 - Block 4 – Icing UPDATED
ACTUAL Questions and CORRECT
Answers
What is an airplane's response to a tailplane stall? - CORRECT ANSWER - a rapid
pitching down motion
Aircraft that are certified for flight into known icing conditions have systems that keep the
windscreen (or portions thereof) clear of ice. - CORRECT ANSWER - true
Which of the following is an indication that the ice accretion on an airplane in flight is a result of
supercooled large drops (SLDs)? - CORRECT ANSWER - ice aft of protected areas
Ice will accumulate on the leading edge of the wing before it accumulates on the horizontal
stabilizer. - CORRECT ANSWER - false
Aircraft are required to demonstrate stall characteristics in natural icing conditions during icing
certification tests. - CORRECT ANSWER - false
When should pitot heat be activated (in relation to icing conditions)? - CORRECT
ANSWER - before icing is encountered
When should de-icing systems be operated? - CORRECT ANSWER - after icing is
encountered
When should anti-icing systems be activated? - CORRECT ANSWER - before icing is
encountered
Which condition is most favorable for tailplane stall? - CORRECT ANSWER - flap
deployment
, How does an increase in the angle attack of an airfoil change its collection efficiency? -
CORRECT ANSWER - it increases the collection efficiency
What is the antidote for inlet icing for turbine powered airplanes? - CORRECT
ANSWER - anti-ice
What type of airplanes are affected by inlet icing? - CORRECT ANSWER - all of the
above
(piston powered fuel injected airplanes, piston powered normally aspirated airplanes, turboprop
airplanes, turbojet and turbofan airplanes)
The majority of part 91 icing accidents were fatal as documented in the NTSB statistical analysis
of icing accidents. - CORRECT ANSWER - false
Icing caused what percentage of part 91 aircraft accidents as documented by the NTSB? -
CORRECT ANSWER - 9%
What is the antidote for carburetor icing? - CORRECT ANSWER - turn on carb heat
What are the symptoms of inlet icing for a fixed pitch propeller airplane? - CORRECT
ANSWER - gradual loss of power (RPM) and engine roughness
Carb icing occurs only in visible moisture. - CORRECT ANSWER - False
Icing caused the highest percentage of aircraft accidents over all categories of operation as
documented in the FAA's Safety Information Analysis and Sharing System's study. - CORRECT
ANSWER - False
Pilots with the greatest number of flight hours in the make and model of aircraft had the highest
number of icing accidents. - CORRECT ANSWER - False
ACTUAL Questions and CORRECT
Answers
What is an airplane's response to a tailplane stall? - CORRECT ANSWER - a rapid
pitching down motion
Aircraft that are certified for flight into known icing conditions have systems that keep the
windscreen (or portions thereof) clear of ice. - CORRECT ANSWER - true
Which of the following is an indication that the ice accretion on an airplane in flight is a result of
supercooled large drops (SLDs)? - CORRECT ANSWER - ice aft of protected areas
Ice will accumulate on the leading edge of the wing before it accumulates on the horizontal
stabilizer. - CORRECT ANSWER - false
Aircraft are required to demonstrate stall characteristics in natural icing conditions during icing
certification tests. - CORRECT ANSWER - false
When should pitot heat be activated (in relation to icing conditions)? - CORRECT
ANSWER - before icing is encountered
When should de-icing systems be operated? - CORRECT ANSWER - after icing is
encountered
When should anti-icing systems be activated? - CORRECT ANSWER - before icing is
encountered
Which condition is most favorable for tailplane stall? - CORRECT ANSWER - flap
deployment
, How does an increase in the angle attack of an airfoil change its collection efficiency? -
CORRECT ANSWER - it increases the collection efficiency
What is the antidote for inlet icing for turbine powered airplanes? - CORRECT
ANSWER - anti-ice
What type of airplanes are affected by inlet icing? - CORRECT ANSWER - all of the
above
(piston powered fuel injected airplanes, piston powered normally aspirated airplanes, turboprop
airplanes, turbojet and turbofan airplanes)
The majority of part 91 icing accidents were fatal as documented in the NTSB statistical analysis
of icing accidents. - CORRECT ANSWER - false
Icing caused what percentage of part 91 aircraft accidents as documented by the NTSB? -
CORRECT ANSWER - 9%
What is the antidote for carburetor icing? - CORRECT ANSWER - turn on carb heat
What are the symptoms of inlet icing for a fixed pitch propeller airplane? - CORRECT
ANSWER - gradual loss of power (RPM) and engine roughness
Carb icing occurs only in visible moisture. - CORRECT ANSWER - False
Icing caused the highest percentage of aircraft accidents over all categories of operation as
documented in the FAA's Safety Information Analysis and Sharing System's study. - CORRECT
ANSWER - False
Pilots with the greatest number of flight hours in the make and model of aircraft had the highest
number of icing accidents. - CORRECT ANSWER - False
