T700 Turboshaft engine

Image of T700/701D powered Apache helicopter

Combat proven

Combat proven in the world's harshest environments, the T700/CT7 is the engine of choice for the world's most demanding military and civilian applications.
    Silhouette of a Sikorsky Black Hawk powered by T700 in flight over rugged mountain terrain, with dramatic sunlight casting shadows across the peaks and a cloudy sky in the background.
    Developed in response to the United States Army’s requirement to deliver added power and improved field maintainability, more than 25,000 T700/CT7 engines have now surpassed 100 million flight hours in nearly four decades of service.

    In addition to proving their mettle in the harshest military operating environments imaginable, T700/CT7 engines are the power of choice for 50 countries and 130 customers for transport, medical evacuation, air rescue, special operations, and marine patrol. A product of continuous innovation, the story of the T700 will continue to unfold as it incorporates advanced components and materials for increased power, reliability, and fuel savings.
    Fighting wildfires

    One weapon in the Los Angeles County Fire Department’s arsenal is the Firehawk, a modified Black Hawk UH-60 helicopter that can carry 1,000 gallons of water and fly near intense fires that cause huge temperature swings.

    Sikorsky originally developed the Blackhawk for the U.S. Army. However, the Firehawk, which is powered by a pair of T700-701D GE helicopter engines, has been modified for firefighting, rescue, external lift, and medical evacuation.

      An L.A. County Sikorsky S70 Fire Hawk in flight, releasing a large stream of water over a wild fire. The background features dry terrain and green trees, emphasizing the aerial firefighting effort.
      Close-up view of a T700, showcasing the intricate design of the fan blades, central hub, and surrounding components, including green wiring and metallic tubing.
      The T700 engine
      The T700 is a superior, proven design with advanced technological updates. The engine is an advanced, powerful, fully modular, and affordable turboshaft engine ready for a diverse portfolio of rotorcraft and fixed-wing applications. The T700 delivers up to 2,000 shp with exceptional reliability.

      Engine models

      GE Aerospace Image

      T700-401D

      Powers the Sikorsky H-60 Sea Hawk/Jay Hawk, and Bell’s AH-1Z/UH-1Y.

      GE Aerospace Image

      T700-701D

      Proud power behind the newest Sikorsky UH-60M Black Hawk and Boeing AH-64E Apache.

      GE Aerospace Image

      T700-701K

      The T700-701K offers the first rear-drive variant of the T700 family for the Korean Surion helicopter.

      Harshest
      environments

      The T700 has decades and over 100 million hours of proven performance in the harshest environments around the world. In sand, dust, extreme temperatures, salt water and high altitudes, the T700 performs superbly.

      A Sikorsky Black Hawk powered by T700 landing on a sandy desert terrain, casting a large shadow on the ground below. The helicopter's rotors are spinning, and dust is being stirred up by its movement.
      GE Aerospace
      T700/CT7 engine modularity
      A truly modular engine designed for ease of maintenance and reduced operating costs.

      Overnight repair in the shadow of the aircraft. No time between overhauls (TBO).

      Flexible
      • Maintain as the situation dictates
      • Most line-replaceable Units (LRUs) changed in 15 minutes or less
      • No module matching requirements
      • No test cell requirements
      • Sealed sumps and bearings
      Cost effective
      Modules less expensive to repair than engines. Easy insertion of future technology/upgrade.

      Applications

      Airframe
      County of origin
      Operator(s)
      Powerplant
      SHP
      Boeing AH-64 D/E
      USA
      US Army, International Militaries
      T700-701D
      1800-2000
      Bell AH-1Z Viper
      USA
      US Marine Corps, International Militaries
      T700-401D
      1600-1900
      Bell UH-1Y Venom
      USA
      US Marine Corps, International Militaries
      T700-401D
      1600-1900
      Sikorsky UH-60L/M and S70 Black Hawk
      USA
      US Army, International Militaries
      T700-701D
      1800-2000
      Sikorsky MH-60R/S Sea Hawk
      USA
      US Navy, International Militaries
      T700-401D
      1600-1900
      Sikorsky HH-60W Jolly Green II
      USA
      US Air Force, International Militaries
      T700-701D
      1800-2000
      Sikorsky VH-60N White Hawk
      USA
      US Marine Corps (only)
      T700-401C
      1600-1900
      Sikorsky MH-60T Jayhawk
      USA
      US Coast Guard (only)
      T700-401D
      1600-1900
      Sikorsky S-70i Firehawk
      USA
      Government fire suppression operations, International Governments
      T700-701D
      1800-2000
      KAI Surion
      Korea
      Republic of Korea Air Force
      T700-701K
      1800-2000

      Resources

      UK receives first remanufactured AH-64E Apache helos
      Czech H-1 deal will keep Bell’s production line open at least through 2024
      US greenlights $4 billion attack helicopter sale to Kuwait
      US approves potential sale of 29 AH-64E Apache attack helos to Australia
      Morocco Orders 24 Boeing AH-64E Apache Helicopters

      The appearance of U.S. Department of Defense (DoD) visual information does not imply or constitute DoD endorsement.