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Fortem International Ltd.
Fortem International Ltd.
The monthly news publication for aviation professionals.
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MT-Propeller adds Canadian acceptance to Cessna 441 approvals
Less erosion of blades, greater ground clearance, improved take off and lower maintenance costs come with installing MT-Propeller's five-blade prop on Honeywell TPE-331-powered Cessna 441s. TCCA Canada approves.
A Cessna 441 with the Quiet Fan Jet five-blade propeller.

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.

Other News
EASA ticks four-blade prop for Cessna 414 RAMs
August 2, 2022
MT-Propeller has received the EASA STC 10079705 for the installation of the 4-blade MTV-14 propeller on the Cessna 414 RAM IV, VI, VII. It replaces the LBA STC 1318 and adds some more Cessna 414 models.
FAA awards STC for Seneca I three-blade propeller
July 18, 2022
The installation of the three-blade MT-Propellers improve the take off distance slightly. The weight is reduced by up to 20 lbs compared to the original propeller.
MT-Propeller extends scope of King Air 300 STC
June 6, 2022
MT-Propeller's FAA STC for King Air 300/350 with five-blade MTV-27 Propeller has been revised to include those with a MTOW up to 17,636 lbs. It is now also certified by EASA.