Tue, Mar 11, 2014
Three-Blade Prop Receives FAA STC
The FAA has awarded Hartzell Propeller a Supplemental Type Certificate to install the company’s recently type certified high performance Bantam series three-blade propeller on diesel-powered Cessna Skyhawk aircraft. The Hartzell Bantam propeller series are small, lightweight two and three blade propellers with a thin, wide chord and swept high performance airfoils. The recent approval covers installation of Hartzell’s three-blade Bantam propellers, featuring carbon fiber structural composite blades and composite spinners, on Cessna C-172s with Centurion diesel engines.
“Geared diesel engines, like the Centurion and the Austro Engine AE-300, require an ultra lightweight, slow turning propeller with a higher blade count because the airframes they power are extremely weight-sensitive,” said Hartzell Propeller Vice President of OEM Sales and Product Support Gary Chafin. “The combination of Hartzell’s Bantam propellers and the Centurion engines in Cessna Skyhawks will prove to be an unbeatable combination for all operators, including flight schools.”
The lightweight Bantam three-blade propeller weighs 35.3 pounds, including spinner, and replaces the previously supplied wood-core propellers. The superior strength of the carbon fiber structural composite material enables the Hartzell Propeller engineering team to design blades with wider chords and thinner airfoils, ultimately leading to higher performance and durability.
With a new Bantam propeller the aircraft cruises approximately three knots faster from 75 percent up to max power, has 15 percent faster acceleration time to 45 KIAS and shows a 50-75 fpm increase in max power rate of climb. The Bantam series propellers utilize Hartzell's proven durable carbon fiber monocoque construction, including field replaceable electroformed hard nickel erosion shields, allowing for maximum damage tolerance and field repairability, important in flight school environments and on unimproved runways.
The three-blade Bantam propellers for Centurion powered Skyhawks have a 2,400 hour recommended Time Between Overhaul as well as a warranty that covers the propeller and spinner for three years or 1,000 hours, whichever occurs first. The new propellers are available through Hartzell’s Top Prop performance conversion program.
(Image provided by Hartzell Propeller)
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