\\Correct me if I'm wrong, but most current jet transport aircraft do not have tailplane deice....
My question is: if the tailplane is an efficient ice collector, why is the jet transport tailplane not equipped with deice protection?\\
Indeed true for older types as well, bobrun, the Lockheed TriStar is but one example.
The answer is...
Inflight icing tests carried out during certification clearly demonstrated that tailplane anti-icing was not required.