Tommay85
Well-Known Member
That's still a true statement. It's possible to get some piston airplanes certified for flight into known icing, but few actually are.
Most freight airplanes are. Hell, TKS is certified to go into severe! I don't think heated wings are even certified to do that.
IIRC, it was my company(FLX) that did the testing on the caravan. I'll look for pics. They went up in freezing rain for 19 minutes. The protected surfaces were clear and the unprotected had over 3 inches of ice on it. It's definitely effective.