They are talking about the old Helitrade (now Hillsboro) STC for the 212 hub and blades and going to a tractor tailrotor with 212 blades on the rh side. That may actually not be as effective as a ship with composite Huey blades, fast fin/strakes and Van Horn composite left side tail rotor blades. I'd like to see a fly-off of both styles during hot and high. Might surprise folks.