Maintenance, Repair & Overhaul

PT6B/-C/-T (MRO)

The PT6 turboshaft engines – the PT6B, -C, and -T – are designed to power single- and twin-engine helicopters. The engines in the 1,000- to 2,000-shaft horsepower class are very popular, thanks to their reliability and durability. The new PT6C-series engines, such as the PT6C-67, come with Full-Authority Digital Engine Control (FADEC). The PT6C-67 has been selected to power the AW609 TiltRotor.

Maintenance for the PT6B/-C/-T is provided by P&CW's customer support network.


  • multi-stage axial compressor
  • single-stage centrifugal compressor
  • free power turbine
  • reverse-flow combustor



  • Augusta Westland A119 Koala: PT6B-37A
  • Avicopter AC 313: PT6B-67A
  • Sikorsky S-76B: PT6B-36A, PT6B-36B


  • Augusta Westland AW139: PT6C-67C
  • Augusta Westland AW609: PT6C-67A
  • Dyncorp UH-1 Global Eagle: PT6C-67D
  • Airbus Helicopters H175: PT6C-67E


  • Augusta Bell Modell 212: PT6T-3. PT6T-6
  • Augusta Bell Modell 412/SP/HP/EP: PT6T-3B, PT6T-3BE, PT6T-6, PT6T-3D, PT6T-3DF
  • Bell 412 EPI: PT6T-9
  • Bell CFUTTH CH-146 Griffon: PT6T-3D
  • Sikorsky S-58T: PT6T-3, PT6T-6

Technical Data

Max. power2.243 shp
Diameter23 in
Height35 in
Length66 in
Width43,5 in