The European Aviation Safety Agency STC’d Hartzell Propeller’s swept airfoil composite five-blade propellers on the Daher-Socata TBM 700/850. First installation of the new higher performance Hartzell prop on a European-registered TBM was recently performed at the Socata North America Service Center in Pembroke Pines, Fla. According to Hartzell, the new propeller for the turboprop single results in faster takeoff acceleration, higher cruise speeds and better climb, along with less noise.