Among turbofan manufacturers, Williams International remains tops with AIN readers for the support it provides to operators. Rolls-Royce, combined into one listing this year for the first time instead of being separated into R-R and R-R Deutschland, takes second place and, by barely a gnat’s whisker, bumps Pratt & Whitney Canada to third place. Honeywell takes fourth place, followed by GE, CFE and CFM, but the score spread from first (8.09) to last place (7.32) is not great (see rating scale on page 53), suggesting that the efforts of all the manufacturers are succeeding to levels that do not vary wildly.

Among turboprop/turboshaft manufacturers, Rolls-Royce takes the top spot for product support, followed by Pratt & Whitney Canada (again just barely a gnat’s whisker behind Rolls), Honeywell and Turbomeca, with scores ranging from RR’s 7.87 to Turbomeca’s 6.74. That’s a slightly bigger spread than for the turbofan manufacturers. The accompanying chart below shows the percentage changes for each manufacturer’s scores compared with last year’s survey; among turbofan builders GE improved its standing the most (almost 9 percent), and Rolls-Royce recorded the greatest gain (almost 13 percent) among turboprop/ turboshaft builders.