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Hartzell Propeller and Raisbeck Engineering Team Up for Better Performing King Air 350s

Date: July 24, 2017 Category: Press Releases
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Oshkosh, Wisc., July 24, 2017 Hartzell Propeller and Raisbeck Engineering are collaborating on new structural composite swept blade props for the Beechcraft King Air 350 turboprop. Hartzell Propeller’s exhibit at EAA AirVenture Oshkosh 2017 will feature a King Air 350 modified by Raisbeck Engineering with Hartzell’s newest structural composite 106-inch diameter lightweight five-blade propellers.

The aircraft will be at Hartzell’s Booth 296-297 in the Main Aircraft Display Area during EAA AirVenture Monday July 24 through Sunday July 30. Hartzell designed and manufactures the King Air propellers and Raisbeck performed the flight tests for the STC, which it expects soon.

The new King Air 350 propellers are an extension of the propeller blade technology advancements developed jointly by Hartzell and Raisbeck for the King Air 90, King Air B200 series and King Air 300 series aircraft. The new composite propellers have an extended 3,000-hour, three-year warranty.

The King Air 350 collaboration by the Hartzell Raisbeck team has led to an increase in take-off, climb and cruise performance with decreased noise. The five-blade technology, designed specifically for the King Air 350, greatly increases the utility of the world’s most popular twin-engine turboprop.

“By taking advantage of the aerodynamic effect of blade sweep, the strength of lightweight structural composites and robotic manufacturing technologies, Raisbeck and Hartzell have greatly improved performance across the board in all flight phases,” said Hartzell Propeller Executive Vice President JJ Frigge. Hartzell’s new five-blade swept propellers replace the standard Hartzell four-blade aluminum blade propellers.

Raisbeck Engineering Vice President of Sales and Marketing Lynn Thomas said, “This lighter prop provides improved single-engine climb performance, unlimited life blades, increased takeoff acceleration, and is quieter. We are already receiving widespread interest from King Air 350 owners and operators in this high performance aftermarket modification.”

About Raisbeck Engineering:

Raisbeck Engineering, headquartered in Seattle, Wash., is a leading provider of aircraft modifications for business and commercial aircraft. Dedicated to improving performance and efficiency for aircraft owners, Raisbeck’s aerodynamically-designed enhancements deliver better performance results and improve passenger comfort. For more information about Raisbeck Engineering and our products, please visit Stay connected with Raisbeck online through Facebook, Twitter and LinkedIn accounts.

100th Year in Business

Celebrating its 100th year, Hartzell Propeller is the global leader in advanced technology aircraft propeller design and manufacturing for business, commercial and government customers. The company designs next generation propellers with innovative “blended airfoil” technology and manufactures them with revolutionary machining centers, robotics and custom resin transfer molding curing stations.

With ASC-II™ composite technology, Hartzell delivers optimal performance, strength, and durability with carbon fiber blades. Hartzell Propeller and its sister company, Hartzell Engine Technologies LLC, form the general aviation business unit of Tailwind Technologies Inc. For more info on Hartzell Propeller go to

Hartzell Propeller