与首台在1963年面世的450SHP轴马力的PT6A发动机相比，如今PT6发动机系列的功率增加了四倍，功重比提高了40，燃油消耗率降低了20。
据了解，PT6发动机已生产了52000多台，并被应用在130个不同领域，PT6发动机所在机队的飞行时间已累计多达3.9亿小时。在全球航空领域普遍进行的重要任务中都能找到PT6发动机，从救援工作到预定的客运服务，从货运服务到要客接送，从农业应用到军事飞行培训、从消防救火到搜救任务。PT6A发动机高可靠性也加速了20世纪80到90年代的单发涡桨飞机的发展。
PT6A是涡桨发动机，PT6B和PT6C是涡轴发动机。PT6发动机的各变种及参数如下 Variants PT6A http//www.pwc.ca/en/engines/pt6a PT6A家族包括了一系列自由涡轮涡桨发动机，输出功率500-1940shp（433-1447kW） Thermodynamic Power Class* ESHP*** Mechanical Power Class* SHP Propeller Speed Max. RPM Height** Inches Width** Inches Length** Inches PT6A Small A-11 toA-140 600 to 1075 500 to 900 1,900 to 2,200 21 to 25 21.5 61.5 to 64 PT6A Medium A-41 toA-62 1,000 to 1,400 850 to 1,050 1,700 to 2,000 22 19.5 66 to 72 PT6A Large A-64 toA-68 1,400 to 1,900 700 to 1,700 1,700 to 2,000 22 19.5 69 to 75.5 ThePT6Afamily is a series of free turbine turboprop engine providing 500 to 1,940shp433 to 1,447kW Small variant equivalent shaft horsepower shaft horsepower applications PT6A-6 525 eshp 500 shp PT6A-11AG 528 eshp 500 shp Air Tractor AT-400 Schweizer Ag-CatG-164B Turbine PT6A-15AG 715 eshp 680 shp Air Tractor AT-400 Air Tractor AT-501 Frakes Turbocat Schweizer Ag-CatG-164B Turbine PT6A-20 579 eshp 550 shp PT6A-21 580 eshp 550 shp Beechcraft King AirC90A/B/SE Beechcraft Bonanzaturbine conversion PT6A-25, -25A 580 eshp 550 shp PT6A-25C 783 eshp 750 shp Embraer EMB 312 Tucano Pilatus PC-7/PC-7 MKII Turbo Trainer PZL-130 Orlik/ TC-II Turbo-Orlik PT6A-27 715 eshp 680 shp Beechcraft Model 99A, B99 de Havilland Canada DHC-6 Twin Otter300 Harbin Y-12 Embraer EMB 110 Bandeirante Let L-410 Turbolet Pilatus PC-6/B Turbo-Porter PT6A-28 715 eshp 680 shp PT6A-29 778 eshp 750 shp PT6A-34 783 eshp 750 shp Embraer EMB 110 Bandeirante/111 Embraer EMB 821 Caraj Grumman Mallardturbine conversion JetPROP DLX PAC P-750 XSTOL Quest Kodiak Vazar Dash 3 Turbine Otter VikingDHC-6 Twin Otter400 PT6A-34AG 783 eshp 750 shp Air Tractor AT-502B Frakes/Grumman Turbo-CatModel A/B/C Pacific Aerospace 750XL PZL-OkeciePZL-106 Turbo Kruk Schweizer Ag-CatG-164B/D Turbine Thrush Model 510P PT6A-35 787 eshp 750 shp Blue 35 JetPROP DLX PT6A-36 783 eshp 750 shp PT6A-38 801 eshp 750 shp PT6A-110 502 eshp 475 shp PT6A-112 528 eshp 500 shp PT6A-114 632 eshp 600 shp PT6A-114A 725 eshp 675 shp Cessna 208 Caravan PT6A-116 736 eshp 700 shp PT6A-121 647 eshp 615 shp PT6A-135 787 eshp 750 shp Beechcraft King AirF90-1/C90GT/C90GTi/C90GTx Blackhawk XP135ACheyenneSeries Blackhawk XP135AConquestI Blackhawk XP135AKing Air90 Series Cessna ConquestI Lancair Evolution Silverhawk 135/StandardAeroC90/E90 StandardAeroCheyenneSeries StandardAeroKing AirF90 T-G Aviation SuperCheyenne Vazar Dash 3 Turbine Otter Medium variant equivalent shaft horsepower shaft horsepower applications PT6A-40 749 eshp 700 shp PT6A-41 903 eshp 850 shp Beechcraft King Air 200/B200 Piper CheyenneIII/IIIA PT6A-42 903 eshp 850 shp Beechcraft C-12 HuronF Beechcraft King Air 200/B200 Blackhawk XP42King Air 200 StandardAeroKing Air 200 Blackhawk XP42AC-208 CaravanSeries -42A Piper Meridian PT6A-45 1070 eshp 1020 shp PT6A-50 1022 eshp 973 shp PT6A-52 898 eshp 850 shp Beechcraft King Air B200GT/250 Blackhawk XP52King Air 200/B200 Enhanced AeroB200GTO StandardAeroKing Air 200/B200 PT6A-60, -60A 1113 eshp 1050 shp Beechcraft Super King Air300/350 PT6A-60AG 1081 ehsp 1020 shp Air Tractor AT-602 Ayres Thrush550P/660 PT6A-61 902 eshp 850 shp PT6A-62 950shp KAI KT-1/KO-1 Pilatus PC-9Turbo Trainer Large variant equivalent shaft horsepower shaft horsepower applications PT6A-64 747 eshp 700 shp EADSSocata TBM700 PT6A-65B, -65R 1249 eshp 1173 shp Beechcraft 1900/1900C Polish Aviation FactoryM28 Skytruck PT6A-65AG, -65AR 1298 eshp 1220 shp Air Tractor AT-602 Air Tractor AT-802/802A/802AF/802F Ayres Thrush660/710P PT6A-66, -66A, -66D 905 eshp 850 shp National Aerospace LaboratoriesSARAS Piaggio P.180 Avanti Ibis Ae270HP -66A EADSSocata TBM850 PT6A-66B 1010 eshp 950 shp Piaggio P180 Avanti II PT6A-67, -67A, -67B, -67P 1272 eshp 1200 shp Beechcraft Starship Epic LT IAI Heron TP Pilatus PC-12-67B Pilatus PC-12NG -67P PT6A-67D 1285 eshp 1214 shp PT6A-67AF, -67AG, -67R, -67T 1294 eshp 1220 shp Air Tractor AT-802/802A/802AF/802F -67AG Ayres Thrush710P -67AG Basler Turbo BT-67-67R Shorts 360/ 360-300 -67R PT6A-67F 1796 eshp 1700 shp Air Tractor AT-802/802A/802AF/802F PT6A-68 1324 eshp 1250 shp T-6A Texan II Pilatus PC-21-68B Embraer EMB-314 Super Tucano-68C T74 美国军方指定PT6A-20/27发动机的名称为T74