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Hartzell Introduces New Bonanza And Debonair Top Prop™ Propeller Conversion With Blended Airfoil Technology

Date: December 3, 2003 Category: Press Releases
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Combines best aspects of original propeller with Hartzell’s latest airfoil design capabilities.

Hartzell’s new scimitar Top Prop propeller conversion for the Beech Bonanza and Debonair is now available. The 82 inch, three-bladed prop increases take-off and climb while reducing noise levels.

PIQUA, Ohio – December 3, 2003 – Hartzell Propeller Inc. announced today that a new three-bladed propeller is now available for a wide range of Beech Bonanzas and Debonairs. The new propeller is a hybrid design to maintain the outstanding structural characteristics of the existing Bonanza blade while incorporating improvements in the tip section like those found on Hartzell’s newer “Blended Airfoil” blades. The objective was to offer a larger diameter propeller for improved performance without increasing the noise signature of the propeller.

As a result, at 82 inches in diameter the new propeller is 2 inches larger than the previous Bonanza propeller and provides an increase in take-off and climb performance. Pilots are also reporting an increase in cruise performance. Like the previous Top Prop for Bonanzas, this propeller comes with a 2400 hour/6 year TBO and the exclusive Hartzell Plus Three™ warranty which provides a full three years or 1000 hours of coverage. Cost for the complete kit is $8,995 and includes the propeller, polished spinner, and STC paperwork. The kit is available specifically for the 33, 35, and 36 series Bonanzas with originally equipped TCM IO-520 or IO-550 engines.

Carl Hinnewinkel of Cherry Valley, CA installed the new prop on a Beech V35B with the IO-520-BA and reports, “Take-off is excellent and climb is incredible. There’s less vibration and it’s much smoother. I’ve seen an increase in cruise of 7-8 knots. At higher altitudes the take-off is really incredible.”

For more information about the new Beech Bonanza and Debonair propeller conversion kit or any other Top Prop performance conversion, visit the Top Prop section of the Hartzell Web site at, or call toll free (800) 942-7767 or (937) 778-5726. Fax your request to Hartzell at (937) 778-4215 or email

Hartzell Propeller Inc. is widely recognized as the leader in advanced propeller design and manufacturing technology. NASA has recognized Hartzell’s advanced design capability by naming it the exclusive propeller partner for its General Aviation Propulsion (GAP) program. The company has recently developed the next generation of propeller designs based upon innovative “blended airfoil” technology and is manufacturing these blades on revolutionary machining centers to provide mission optimized performance for its customers. Hartzell traces its beginnings in 1917 to a relationship with Orville Wright and was founded on the principal of Built on Honor – a tradition that continues today. For more information visit the company on the Web at or fax your request to Hartzell at (937) 778-4321.

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