Pratt & Whitney Canada’s latest version of the PT6C engine will power the medium EC175 being developed jointly by Eurocopter and Aviation Industries of China (AVIC) 2.
The PT6C-67 also powers the AgustaWestland AW139 and the Bell/Agusta Aerospace BA609 civil tilt-rotor. The -67 is the first PT6 produced by Pratt Canada that is governed by a dual-channel, full-authority digital engine controller (FADEC).
Eurocopter and AVIC 2 are developing the 6-8-ton-class EC175 to fill the gap in Eurocopter’s product line between the 5-6-ton EC155B1 and the 11-12-ton EC225 Super Puma. It would compete with AgustaWestland’s AW139. In China, the aircraft would be designated the Z15. Eurocopter is working with AVIC 2’s Harbin Aviation Industry Group subsidiary on the program.
In developing the -67E, Pratt Canada is drawing on previous designs in the PT6 family as well as other engines in its line. The -67E is using a version of the PW600 compressor, for instance. Pratt Canada plans to deliver the first engines for flight testing to Eurocopter in 2009. The EC175 is targeted to enter service in 2011.
"This is a great program for our PT6C-67E engine," said Keyvan Fard, Pratt Canada’s vice president of regional airlines and helicopter engines. The dual-channel FADEC "offers reduced pilot workload along with increased dispatch reliability."