The TKS ice protection system installed in the aftermarket has a list price of $28,739 and is not approved for flight in icing conditions. That simply means that the installation of the system did not result in any change to the performance or the handling qualities of the airplane. Approved or not, it'll get rid of ice just fine. Fluid is applied on the leading edges of the flying surfaces, the wing struts, the prop and the windshield. The installation, done by Aerospace Systems and Technologies, Inc. of Salina, Kansas, (888/865-5511) looks just right. That company offers the TKS system for a number of airplanes and some of their systems have approval for flight in icing conditions. The approved and unapproved systems are a lot alike with some redundancy in the approved systems being the main difference.