Icing Page: 19 of 22
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( )) 1. White, granular and can be flaked off easily describes formation.
a. clear ice
O rime ice
2. The most severe icing occurs when the free air temperature is between
a. 0 degrees and -10 degrees C.
b. -10 degrees and - 20 degrees C.
c. 32 degrees and 14 degrees F.
I) Both a and c.
3. Which of the following statements is true concerning the factors influencing the rate of ice formation on an
aircraft in flight?
(Q Ice formation is more rapid in dense clouds than in scattered clouds.
b. Small water droplets collect on an aircraft more easily than large drops.
c. The rate of ice formation is decreased by an increase in airspeed.
d. Airfoil smoothness has no effect.
4. The types of aircraft structural ice are
a. clear, rime, and glaze.
49 rime, clear and frost.
c. glaze, frost, and clear.
d. light, trace, and heavy.
O( 5. Clear ice should be expected in
9f cumuliform clouds with temperature between 0 degrees and -10 degrees C.
b. stratiform clouds with temperature between 0 degrees and -20 degrees C.
c. stratiform clouds at any temperature.
d. cumuliform clouds at any temperature.
6. You are flying at 1500 ft. in VFR conditions toward a warm front when you encounter freezing rain. The
outside air temperature is -5 degrees C. You should
a. climb above the clouds.
b. descend to 500 ft. and proceed enroute.
O descend and land.
d. maintain altitude and increase airspeed.
Here’s what’s next.
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Reference the current page of this Pamphlet.
Snyder, Henry W. Icing, pamphlet, February 1971; Texas. (texashistory.unt.edu/ark:/67531/metapth46570/m1/19/: accessed August 19, 2017), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; crediting Boyce Ditto Public Library.