More than an Engine
500 to 1,900 shaft horsepower class
The PT6A engine family is the world's most popular engine in its class and is one of Pratt & Whitney's greatest success stories. Experience gained from the PT6A has helped spawn many of the engine families that have made Pratt & Whitney a world leader in the gas turbine engine market.
A guided digital experience for engine maintenance

discover the all new services hub

Services Hub transforms your digital experience by seamlessly guiding you to the right PT6A engine maintenance solutions for your aircraft, engine model and life cycle stage in seconds.
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We are the #1 provider of engines and customer services solutions in the General Aviation segment. Our commitment to reliable innovation has led to multiple technological advances in the PT6A engine family. You can fly longer with our digital engine technologies to help you better plan your maintenance activities and reduce costs. You can count on our reliable customer service experts for real-time support no matter where you are in the world at any time of day.

Dependability and versatility

The versatility and proven performance of the PT6A makes it the engine of choice for demanding, high-cycle/high-power applications, in single- and twin-engine aircraft for missions and applications of all kinds. The PT6A is the only engine to achieve Single Engine Instrument Flight Rules (IFR) status for passenger revenue activity in North America, Australia, Europe and New Zealand.

Broad Power Range

Be more productive with your time. Ranging in power from 500 shp to over 1,900 shp, PT6A engines are available in more than 70 models, offering unsurpassed flexibility and capability for a variety of applications. The numbers speak for themselves: members of the family currently power aircraft in service with over 7,100 operators in more than 180 countries and having accumulated over 400+ million flying hours.

Global Customer Support

Customers are ready to fly when they need to with the digital solutions and information that keeps their engines working at their best. Operators of PT6A engines are supported by Pratt & Whitney-owned and designated service facilities around the world, field support representatives on six continents, a 24/7 Customer First Centre for rapid expert support, the most advanced diagnostic capabilities for this market, including the Know My PT6 app, and the largest pool of Pratt & Whitney rental and exchange engines in the industry. We are dedicated to keeping you ahead.

The PT6A engine family continues to advance, incorporating the latest technologies in the drive to exceed our customers' expectations

The best of both worldsProven technology built upon a remarkable body of engineering achievement that has written new chapters in aviation history in collaboration with our partners, and disruptive technology that continues to make new aircraft applications possible.  

Flexible engine architecture and modular reverse flow design simplify installation in both single- and twin-engine installations as well as tractor and pusher propeller configurations. 

Simple, on-wing maintenance is possible for most tasks, where other engines might need a shop visit. 

Easy access to all external components means there’s no other engine in General Aviation that’s easier to maintain than the PT6A. 

The novel PT6A configuration has proven to be a key attribute to its success: its rearward, reverse flow inlet and forward facing turbine section providing fast maintenance turn-around through on-wing hot section refurbishment in most aircraft installations. The PT6A is a two-shaft engine with a multi-stage compressor driven by a single-stage compressor turbine and an independent shaft coupling the power turbine to the propeller through an epicyclic concentric reduction gearbox.





(Max. RPM)




PT6A' Small' (A-11 to A-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 to A-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 TO A-68) 1,400 to 1,900 700 to 1,900  1,700 to 2.000 22 19.5 69 to 75.5
* Powers are approximate values at take-off. Available at sea level, standard day, static conditions, uninstalled.
** Dimensions are approximate values.
*** Equivalent Shaft Horsepower: includes estimated equivalent contribution of exhaust thrust.

Applications (38)

  • PT6A-114A

    Cessna 208/208B Caravan I
  • PT6A-11AG

    Air Tractor AT 402A/402B
    Schweizer G-164B AG-Cat Turbine
  • PT6A-135A

    Beechcraft King Air F90-1/C90GT/C90GTi/C90GTx
    Blackhawk XP135A Cheyenne I/II/IIXL Series
    Blackhawk XP135A Conquest I
    Blackhawk XP135A King Air C90/E90/F90 Series
    Cessna Conquest I
    Lancair International Inc. Evolution
    Silverhawk 135A / Blackhawk C90/E90
    StandardAero Cheyenne Series
    StandardAero King Air F90
    T-G Aviation Super Cheyenne®
    Vazar Dash 3 Turbine Otter
  • PT6A-140

    Blackhawk XP140 Cessna 208/208B Caravan Series
    Cessna Grand Caravan EX
  • PT6A-140A

    Aircraft Structures International Corp. (ASIC)
    Evolution Aircraft EVOT-850
    Vancouver Island Air DH3 Turbine Otter
  • PT6A-140AG

    Air Tractor 502XP
    Thrush 510P
  • PT6A-15AG

    Air Tractor AT 402A/402B
    Air Tractor AT 502B
    Frakes Turbo Cat Model A/B/C
    Schweizer G-164B AG-Cat Turbine
  • PT6A-21

    Beechcraft King Air C90A/B/SE
    Turbine Air Bonanza
  • PT6A-25C

    Embraer EMB-312 Tucano
    Pilatus PC-7/PC-7 MKII Turbo Trainer
    PZL-Okecie PZL-130 TC-II Turbo-Orlik
  • PT6A-27

    Beechcraft 99A
    Beechcraft B99
    Bombardier (deHavilland) DHC-6 Twin Otter Series 300
    Embraer Bandeirante EMB-110
    LET L410
    Pilatus PC-6 Turbo Porter
  • PT6A-34

    Embraer Bandeirante EMB-110
    Embraer Bandeirante EMB-111
    Embraer Caraja
    Frakes Mallard
    Pacific Aerospace XSTOL (750XL)
    Quest Kodiak 100
    Vazar Dash 3 Turbine Otter
    Viking DHC-6 Twin Otter 400
  • PT6A-34AG

    Air Tractor AT 502B
    Frakes Turbo Cat Model A/B/C
    Pacific Aerospace 750
    PZL-Okecie PZL-106 Turbo-Kruk
    Schweizer G-164B AG-Cat Turbine
    Schweizer G-164D AG-Cat Turbine
    Thrush 510P
  • PT6A-35

    Blue 35
  • PT6A-41

    Beechcraft King Air 200/B200
    Piper Cheyenne III/IIIA
  • PT6A-42

    Beechcraft C12F
    Beechcraft King Air 200/B200
    Blackhawk XP42 King Air 200
    StandardAero King Air 200
  • PT6A-42A

    Blackhawk VX Cessna 208/208B Caravan Series
    Piper Meridian M500/M600
  • PT6A-52

    Beechcraft King Air B200GT/250
    Blackhawk XP52 King Air 200/B200
    Enhanced Aero B200GTO
    StandardAero King Air 200/B200
  • PT6A-60A

    Beechcraft King Air 300/350
  • PT6A-60AG

    Air Tractor AT 602
    Thrush 550P
    Thrush 660
  • PT6A-61

    Blackhawk XP61 King Air 200/B200 Series
  • PT6A-62

    Pilatus PC-9 Turbo Trainer
  • PT6A-64

    Daher TBM 700
  • PT6A-65AG

    Air Tractor AT 602
    Air Tractor AT 802/802A/802AF/802F
    Thrush 660
    Thrush 710P
  • PT6A-65B

    Beechcraft 1900/1900C
    Polish Aviation Factory M28 Skytruck
  • PT6A-65SC

    Cessna SkyCourier
  • PT6A-66

    National Aerospace Laboratories Saras
    PIAGGIO Avanti P-180
  • PT6A-66A

    Ibis Aerospace Ae 270 HP
  • PT6A-66B

    PIAGGIO Avanti II
  • PT6A-66D

    Daher TBM 850
    Daher TBM 900/910/930/940
  • PT6A-67A

    Beechcraft Starship
    Blackhawk XP67A King Air 350 Series
    Blackhawk XP67A King Air 300 Series
    EPIC E1000
    IAI HeronTP
  • PT6A-67AG

    Air Tractor AT 802/802A/802AF/802F
    Thrush 710P
  • PT6A-67B

    Pilatus PC-12
  • PT6A-67F

    Air Tractor AT 802/802A/802AF/802F
  • PT6A-67P

    Pilatus PC-12NG
  • PT6A-67R

    Basler Turbo BT-67
    Shorts 360 / 360-300
  • PT6A-68

    T-6A Texan II
  • PT6A-68B

    Pilatus PC-21
  • PT6A-68C

    Embraer EMB-314 Super Tucano

Services & support to keep you flying

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