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hartzell 2-blade aircraft propeller on a Cardinal aircraft

What to Expect in a Propeller Overhaul

Date: January 23, 2018 Category: Blog Tags: , ,
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Is your aircraft propeller due for an overhaul? Propeller overhauls are an essential part of maintaining the safety and performance of your aircraft. Because the propeller is among the most highly stressed components on an aircraft, it important to be vigilant about preventative maintenance in addition to complying with the manufacturer’s regular aircraft propeller overhaul schedule. Here’s what you should know before a airplane propeller overhaul.

What is an aircraft propeller overhaul?

It’s important to pay attention to your propeller’s time before overhaul (TBO). While Hartzell propellers are engineered to have a long service life, they still require periodic maintenance and inspection just like any other mechanical component of your aircraft. If left unchecked, even small problems may become expensive and potentially dangerous.

While you should perform regular general maintenance inspections of your airplane propeller, it’s not easy to detect issues like corrosion or seal aging. This level of degradation is often only identified during a full propeller disassembly and overhaul at a certified propeller repair facility.

When is it time for an airplane propeller overhaul?

If you have a Hartzell propeller, refer to the Hartzell Service Letter (HC-SL-61-61Y), which is located on our website and is designed to answer questions about airplane propeller and governor overhauls, TBO extensions, calendar limits, and long-term storage. Refer to your propeller model number to locate your propeller model within the service letter and determine the recommended flight hours within your propeller can operate safely and efficiently between overhauls. Adhering to Hartzell published aircraft propeller overhaul limits will ensure that any potential problems developing within the propeller are detected and addressed early on.

 What should I expect?

The aircraft propeller overhaul process is comprehensive and meticulous. During an overhaul, your propeller will first be completely disassembled and visually inspected. The components of your propeller are then cleaned and serviced according to the overhaul manual for the propeller. Each component is inspected for any damage and measured. Then, the service facility will refurbish the blade to its proper specifications. Finally, the aircraft propellers are reassembled and properly balanced.

Where can my airplane propeller be overhauled and serviced?

Hartzell Propeller offers a world-class service center in Piqua, Ohio to complete your aircraft propeller overhaul, maintenance, and repair services. We have also assembled a network of Recommended Service Facilities located around the world that meet our high standards for safety and quality.

Hartzell Propeller