proposed a much larger turboprop, the T407/GLC38, with a five-stage axial/one-stage centrifugal mixed-flow compressor, an annular combustor with 15 burners; a two-stage compressor turbine, a three-stage power turbine, and max takeoff power of 6,000 shp (4,475 kW). The YT706 engine is based on the CT7-8A engine. Compared with the H-60's primary T700 engine, the T706 has a larger compressor, hot section improvements, and full authority digital engine control. The T706 is rated at 2,600 shp (1,939 kW) and increases the hot-and-high mission capability of the U.S. Army's MH-60M Black Hawk for Special Operations applications. Variants T700: Military turboshaft engine. YT700: Prototype version. T700-GE-700: Initial T700 variant. T700-GE-701: The improved T700-GE-701A, -701B, -701C,-701D versions have also been developed from the original -700. T700-GE-401: Navalised version for SH-60 Seahawk helicopters. T700-GE-401C: Universal application version of the -401. T700-GE-701C: Universal application version of the -701. T700-TEI-701D: Licensed produced version of Tusaş Engine Industries of Turkey. Developed for use in the Sikorsky/Turkish Aerospace Industries T-70 utility helicopter. CT7 turboshaft: Commercial version of T700. CT7-2A: Basic model CT7-2D: Higher flow compressor and surface coatings to improve resistance to wear and corrosion CT7-2D1: Similar to the CT7-2D but uses a CT7-6 type hot section CT7-2E1 CT7-6/-6A: The CT7-6/-6A turboshaft engines are upgraded commercial variants of the successful T700/CT7 engine family. The turboshaft engine powers the entire development fleet of AgustaWestland AW101 helicopters with thousands of flight hours of operation. CT7-8: The CT7-8 is a family of powerful engines in the 2,500 to 3,000 shp class. They are more powerful and more efficient versions of its predecessors. CT7-8A: A version of the CT7-8 family used to power older Sikorsky S-92/H-92 helicopters. CT7-8A1: A more fuel efficient version of the CT7-8A. It is used to power newer Sikorsky S-92/H-92 helicopters. The CT7-8A1 produces 2,520 shp. CT7-8A5 CT7-8A7: Developed by GE as an uprated, more efficient and more reliable version of the CT7-8A1 engine for the Royal Canadian Air Force's Sikorsky CH-148 Cyclone helicopters. It is the most modern version of the CT7/T700 engine family. The CT7-8A7 produces 3,000 shp. CT7-8B CT7-8B5 CT7-8E CT7-8E5 CT7-8E6 CT7-8F CT7-8F5 CT7 turboprop: Turboprop version of CT7. CT7-3:Compact shortened and lightened version. CT7-5A2 CT7-5A3 CT7-7A CT7-7A1 CT7-9B CT7-9B1 CT7-9B2 CT7-9C CT7-9C3 CT7-9D CT7-9D2 Applications T700/CT7 turboshaft AgustaWestland AW101 AgustaWestland CH-149 Cormorant Lockheed Martin VH-71 Kestrel AgustaWestland AW149 AgustaWestland AW189 Bell 214ST Bell 525 Bell AH-1W SuperCobra Bell AH-1Z Viper Bell UH-1Y Venom Boeing