Fixed-wing & helo combined: 1 Williams, 2 Rolls-Royce, 3 GE, 4 Pratt & Whitney, 5 Honeywell Jet division: 1 Rolls-Royce, 2 Williams, 3 GE, 4 P&W, 5 Honeywell TP division: 1 Pratt & Whitney. Helo division: 1 Pratt & Whitney Pro Pilot staff report Data compiled by Conklin & de Decker ixed-wing and helicopter operators […]