MT-Propeller has received FAA Supplemental Type Certification (STC) for a five-blade propeller for the Cessna 206-series equipped with PT6 engines.
According to MT-Propeller, the new configuration reduces the maximum propeller rpm to 1,900, and states the composite blades have no life limitation and are repairable in the event of incidents involving foreign object debris (FOD).
“The high performance, lightweight and durable MT-Propellers can be used on aircraft with piston engines and propeller turbines, as well as on airships, wind tunnels, and hovercraft. MT-Propellers can be developed for nearly every aircraft type from motor gliders to regional airliners,” the company said in a statement.
MT-Propeller president Gerd Muehlbauer lists benefits to the five-blade configuration as follows:
Improved erosion protection from bonded-on nickel alloy leading edges
6-8 KTAS cruise performance improvement
Improved ramp appeal
Smaller prop diameter with increased ground clearance
The configuration has already received certification from the European Union Aviation Safety Agency (EASA).
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