MT-Propeller has received a TCCA Canada letter of acceptance of the EASA STC 10070901 for the installation of the MTV-27-1-E-C-F-R(G)/CFR224-55 Quiet Fan Jet composite five-blade propeller on the Cessna 441 powered by two Honeywell TPE-331-8 propeller turbines or any TPE-331 installed per approved STCs that do not exceed 635.5 SHP and 2,000 rpm.
This installation is also certified by FAA SA04460NY.
The installation features bonded on wide chord nickel alloy leading edges for superior erosion protection of the blades; a smaller diameter of up to four inches compared to the original propeller, meaning a greater ground clearance of about two inches for less FOD and also more clearance for the fuselage, therefore less cabin noise from the prop tips; take off improvement up to four per cent, so compared to the original AFM a higher safety for the calculated take off run; no propeller ADs; TBO of 4,500 hours or six years, whichever comes first, for low maintenance costs; and no rpm restriction for the complete operational range.
The long time proven MT-Propeller natural composite blades provide significant inside and outside noise reduction. There is no life limitation of the blades and they are repairable in case of FOD. They provide best vibration damping characteristics for almost vibration free propeller operation.