This website uses cookies
More information
Business Air News Bulletin
Business Air News Bulletin
The monthly news publication for aviation professionals.

Why visit ACE ’24?

Related background information from the Handbook...
The monthly news publication for aviation professionals.

Request your printed copy

MT says seven-blade design is top of the props
MT-Propeller VP Martin Albrecht says the installation of the seven-bladed MT-Propeller on the propeller turbine driven aircraft PC-12 means no engine modifications are necessary, with ground roll reduced by 10 per cent.
The PC-12 with seven blades cuts a striking silhouette.

MT-Propeller's Silent 7, the first seven-bladed propeller for general aviation, has received STC from the FAA on the Pilatus PC-12 powered by the Pratt & Whitney P&WC PT6A-67B or PT6A-67P propeller turbine.

The Silent 7 offers a level of comfort and performance that MT says has not yet been experienced on a turboprop.

When starting to develop the propeller in 2016, MT-Propeller had the same vision as in 1999 when it came up with the first five-bladed propeller for turboprops. The five-bladed prop became an industrial standard with more than 2,500 propellers sold for various kinds of turboprops, and it is still an ongoing success story. The seven-bladed propeller is pushing new limits for certain applications to go beyond the achievement of the five-bladed propellers.

MT-Propeller VP Martin Albrecht says that the installation of the seven-bladed MT-Propeller on the propeller turbine driven aircraft PC-12 features the following advantages: no engine modifications necessary; certified ground roll distance reduced by approximately 10 per cent; AFMS amended; certified takeoff distance over 50 ft obstacle reduced by approximately 15 per cent; AFMS amended; climb performance improved, aircraft noise level is about 4 dB(A) less than with the original metal propeller; cabin noise is reduced by 6 to 7 dB(A) depending on location; and the installation complies with the strict German 2010 Landeplatz Lärmschutz Verordnung noise regulations for unrestricted airport operations in Germany and other European countries.

Due to the smaller diameter the seven-bladed MT-Propeller for the Pilatus PC-12 has more ground clearance for less blade tip erosion and FODs. The MT-Propeller natural composite blades provide significant inside and outside noise reduction. They have no life limitation and are repairable in case of an FOD.

They also provide the best vibration damping characteristics for almost vibration free propeller operation and have bonded on nickel alloy leading edges for superior erosion protection of the blades.

Other News
EASA approves more power for Cessna 208 with five-blade prop
June 11, 2024
The Cessna 208 with the five-blade MT-Propeller is now certified by EASA for a power rating up to 950shp. The FAA STC revision is in progress.
Precision strengthens SmartSky dealer network
May 20, 2024
The sales and installation partner has already installed SmartSky LITE ATG on a PC-12.
MT-Propeller is good to change out Meridian engine
April 19, 2024
Replacing the powerplant of a Piper Meridian with a PT6A-135A engine gives greater efficiency plus a reduction in maintenance costs and noise. MT-Propeller now holds an EASA STC for the installation.