Piqua, Ohio-based Hartzell Propeller has announced the development of a new two-blade Top Prop conversion kit for Piper PA-23-250 Aztec twins. The scimitar-shape, 77-inch propeller blades incorporate blade-mounted counterweights, offering greater redundancy for pitch control and feathering, compared with the original-equipment propellers that relied on air pressure. The shape of the blades is more efficient, yielding a 2-to-3-knot increase in cruise speed, and noise reduction of close to 2 dB(a). The conversion kits are available for Aztec C models through F models powered by Lycoming IO-540-C4B or TIO-540-C1A engines. They are available with 14- or 28-volt de-ice systems and include composite spinners. Total weight is 62 pounds per side, and installation is expected to take just a few hours, said Hartzell, since no changes are required to the prop governors. Through its dealer network, Hartzell is offering an introductory price of $21,950 for the basic kit, including a three-year/1,000-hour warranty and a six-year/2,400-hour time between overhaul. To date, Hartzell reports it has delivered more than 17,000 of its Top Prop conversions worldwide.
Hartzell Has Top Prop Available for Aztec Operators
Key Takeaways:
- Hartzell Propeller has launched a new two-blade Top Prop conversion kit for Piper PA-23-250 Aztec twins (C-F models with specific Lycoming engines).
- The kit features efficient, scimitar-shape blades with blade-mounted counterweights for redundant pitch control, resulting in a 2-3 knot increase in cruise speed and approximately 2 dB(a) noise reduction.
- Weighing 62 pounds per side, the conversion includes 14- or 28-volt de-ice systems and composite spinners, with installation expected to be quick as no prop governor changes are needed.
- Available for an introductory price of $21,950, it comes with a three-year/1,000-hour warranty and a six-year/2,400-hour time between overhaul.
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