Pratt & Whitney Canada PT6T/T400

The PT6T is two PT6 turboshaft engines driving a common gearbox. The U.S. Military designation for this engine is the T400. Pratt & Whitney Canada also calls this engine the TwinPac.
The PT6T was designed for the Bell 212 (UH-1N).


  • T400-CP-400: 1,800 hp (1342 kW)


  • Turbo shaft
  • Compressor: three stage axial with single stage centrifugal
  • Turbine: 2-stage axial

used by

  • Bell AH-1J Cobra