The world's first 7-blade composite full feathering reversing propeller for General Aviation Airplanes is in certification testing.

Beginning of May 2018 MT-Propeller tested the new unducted prop fan, how MT likes to call the 7 bladed prop, on a Pilatus P-12 powered by a PT6A-67P. The flight tests showed that the 7-bladed prop reduces the noise level clearly and the performance tests showed very promising results. MT-Propeller is in technical talks with the turbine engine manufacturer for customizing the gear box to reduce the fuel consumption, to get the best out of the unducted prop fan.

Back in October 2016 MT-Propeller egineers and test pilots started flight testing the 7-bladed propeller on a Piper Cheyenne powered by the PT6A-135A turbines and the entire system performed with outstanding results. The endurance tests for certification were successfully performed on a turbine test bench for 3 months and 110 hrs.

All test bench tests inclusive flight testing have now accumulated more than 250 hrs of operation on the 7 bladed prop series.

MT-Propeller is working with high priority for the worldwide propeller certification.

The first OEM has already ordered the 7 bladed propellers for a new project.