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Hartzell Earns STC for Three-Blade Bonanza Propeller

New prop delivers increase in true airspeed.

Hartzell Propellers said in a news release that its new Navigator three-blade, advanced composite scimitar propeller, has been approved for the Beechcraft Bonanza single-engine line, including most 35-C33A, E33A, E33C, F33A, F33C, S35, V35, V35A, V35B, 36 and A36 aircraft. The company says the Navigator will deliver an increase in true airspeed of three to seven knots, depending on the power setting, while reducing airframe vibration.

“The low-inertia Navigator consists of a unique monocoque structure, with carbon-fiber laminates integrated into a co-molded stainless-steel shank,” said the company in the release. “The outboard half of the leading edge is protected from foreign object damage (FOD) with an electroformed nickel-cobalt erosion shield. The carbon-fiber Navigator weighs approximately 65 pounds and is approved at a diameter of 82 inches.” The Navigator is also available with electro-thermal de-ice on existing three-blade, 28-volt systems, and is also fully compatible with existing fluid anti-ice installations from CAV Ice Protection Inc. A new Hartzell S-1-35 prop governor is also an option under the STC.

Propeller time between overhauls (TBO) is six years or 2,400 hours, whichever comes first. When combined with Hartzell Propeller’s Top Prop warranty program, the Navigator is covered through the first overhaul. The basic kit is available for $27,870.

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