Icing Page: 5 of 22
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The formation of ice on aircraft surfaces (fixed or rotary wing) will disrupt the smooth flow
of air over the wings and cause decreased lift, increased drag, and increased aircraft stalling speed.
Ice formation on certain structural parts of an aircraft may cause vibration and place added stress
on those parts.
There are three kinds of ice that will form on an aircraft; you are familiar with all of them in
their common forms.
CLEAR ICE - forms in the ice cube trays. It is hard, glassy, and can be broken loose only with
RIME ICE - the kind that forms on a refrigerator's coils. It is white, granular, and can be flaked
FROST - is that which forms on your automobile surface and windows during the night. It is a
light, feathery, crystalline ice structure of snow-like character.
Ice on aircraft surfaces and on certain structural parts can cause
a. decreased lift and increased drag.
b. increased stalling speed.
i@ All of the above.
Here’s what’s next.
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Snyder, Henry W. Icing, pamphlet, February 1971; Texas. (texashistory.unt.edu/ark:/67531/metapth46570/m1/5/: accessed June 24, 2017), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; crediting Boyce Ditto Public Library.