EASA STC for Cessna 441 with 5-Blade MT-Propeller MTV-27

Sept. 26, 2019
MT-Propeller has received the EASA STC 10070901 for the Quiet Fan Jet composite 5- blade propeller MTV-27-1-E-C-F-R(G)/CFR224-55 on the Cessna 441, powered by two Honeywell TPE-331-propeller turbines.

MT-Propeller Entwicklung GmbH has received the EASA STC 10070901 for the Quiet Fan Jet composite 5- blade propeller MTV-27-1-E-C-F-R(G)/CFR224-55 on the Cessna 441 powered by two Honeywell TPE-331-propeller turbines.

The FAA STC is in progress. MT-Propeller Vice President Martin Albrecht says, that the installation feature the following advantages: - Bonded on wide chord nickel alloy leading edges for superior erosion protection of the blades. - Smaller diameter of up to 4 inch compared to the original propeller, this means more ground clearance of about two inch for less FOD and also more clearance to the fuselage, therefore less cabin noise from the prop tips.

- Take-Off improvement up to four percent, so compared to the original AFM a higher safety for the calculated take-off run.

- No propeller ADs. - TBO 4000 hours or six years, whatever comes first, for low maintenance costs.

- No intermediate inspections are needed between the TBO which requires the propeller removal.

- Reduced cost for spare parts, like blades and lower overhaul costs, for the complete propeller assembly.

- No rpm restriction for the complete operational range.

- The long time proven MT-Propeller natural composite blades provide significant inside and outside noise reduction.

- No life limitation and repairable in case of an FOD.

- All models comply with the strict German noise regulations 2010.

- „Landeplatz Lärmschutz Verordnung“ for unrestricted airport operations in Germany and other European Countries.

- The MT-Propeller natural composite blades provide best vibration damping characteristics for almost vibration free propeller operation.