AOPA Pilot Magazine - September 2014 - 109

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Aviation is full of tradeoffs, and ice
protection systems are no different. A
boot system consists of inflatable rubber sheets, which are used to break the
ice free from the protected surface.
However, improper use of the system can lead to arching (or bridging),
where ice is formed beyond the range
of the inflated boot. Another drawback
is ineffectiveness against runback ice
and variable effectiveness against different icing types.
In weeping wing systems (TKS, for
example), an antifreeze fluid passes
through the porous surface of the protected area. Protected areas may include
leading edges of wings, wing struts, and
horizontal and vertical stabilizers. The
fluid also runs back beyond the protected area. There are drawbacks. For
example, duration of protection is limited by the amount of fluid you can carry
in the reservoir, and carrying fluid may
add a substantial amount of weight.
Whether it's a weeping wing or pneumatic boots, the benefits are about the
same. When the system gets you and
your passengers out of a jam you'll be
calling it "priceless."
Need help? Call the AOPA Pilot Infor-

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www.aopa.org/pilot AOPA PILOT | 109

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AOPA Pilot Magazine - September 2014

Table of Contents for the Digital Edition of AOPA Pilot Magazine - September 2014