Propellers are subject to wear, fatigue, corrosion and erosion, all of which can lead to failure if not kept in check.

Hartzell Propeller Design, Safety, and Maintenance By Mike Disbrow May-June 1998 Propellers seem to be one of the most visible and yet least respected components on the airplane. They lead a very difficult life, as they are blasted in...

Dynamic Balancing
After installation (and periodically in between overhauls) it is advisable to dynamically balance the propeller. A dynamic balance on the aircraft is superior to the propeller static balance in that the entire rotating system of the engine and propeller is balanced together as though they are one unit. Not only does a dynamic balance make the ride a little smoother, but also serves to protect cowlings, exhaust systems, avionics, etc., from potentially damaging vibrations.

For More Information
In the interest of promoting flight safety as it relates to propellers, Hartzell sponsored the production of an AOPA Air Safety Foundation publication on the subject, which was just recently released. Contact AOPA Aviation Safety Foundation for this publication or visit their web site at Additional information on propeller maintenance can be obtained from the FAA in Advisory Circular 20-37. For additional information on any of the above issues, contact Hartzell Product Support at (937) 778-4379. Finally, for more information on Hartzell Top Prop STC'd conversions, call (800) 942-7767.

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