Including the wing, tail and wing strut leading edges, plumbing and dual pumps, the TKS system weighs only about 75 pounds installed, which is close to a wash when you remove the boots and attendant hardware. The downside is that the fluid is heavy. With the 20-gallon tank full, you've got an additional 184 pounds on board. The good thing is, handling that kind of weight increase is doable for a Caravan. Moreover, since icing is a seasonal issue for nonpressurized airplanes, operators won't have to tanker a passenger's worth of glycol around with them in the summertime. And with this airplane, finding a place to put a 20-gallon TKS fluid tank was easy: in the pod. For those few Caravans sold without a pod, Cessna is developing what it calls a "blister," to be located on the belly of the airplane solely to house the TKS tank. Of course, for airplanes that operate in tropical and hot and dry climates, there's no need for the system, an option at around $77,000.