Turbine: 1 Leonardo, 2 Bell, 3 Airbus, 4 Sikorsky. Piston: 1 Robinson Leonardo is #1 in aftersale product support for 5 consecutive years. Robinson is #1 in piston for 20 years in a row. Results based on a 17% return with 420 line evaluations. Pro Pilot staff Report Compiled by Conklin & de Decker Turbine […]