There are two types of prop balancing, static and dynamic. Static balancing is carried out by the prop overhaul shops; where props blades are literally filed until both ends weigh the same. Lycoming recommends that props should be overhauled (which includes static balancing) at major engine overhaul or every 2000 hours.
Dynamic prop balancing is carried out with the prop fitted to the aircraft, and includes the entire rotating assembly (prop, crankshaft, spinner, spinner back plate, and ring gear). Dynamic balancing should be carried out any time that the engine or the prop is overhauled.
After extensive factory training, Monarch Aviation Inc.has been certified by the FAA to carry out dynamic prop balancing.
With rapid ‘ACES’ field support and technical propeller support from Air Prop Specialist, Inc. at Marianna, even the most problematic prop can be diagnosed, repaired, and dynamically balanced with minimal aircraft down time.