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Aircraft Maintenance

Propeller Balancing


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Pedron Aircraft Works in Denton, TX is certified by, and utilizes Dynamic Solutions propeller balancing equipment.

-Propeller Balance FAQs:

What is Dynamic Propeller Balancing?

Dynamic Propeller Balancing is a process utilizing computer analysis to balance the entire propulsion system.

Why Should I Balance My Propeller?

Propeller mass unbalance causes undue physical and structural fatigue.

We have all seen evidence of propeller unbalance:

Cowling and baffle wear and cracks.

            Spinner failures
            Failed exhaust pipes, brackets, and clamps
            Loose rivets and fasteners
            Abnormal engine control cable wear
            Unserviceable crankshafts at overhaul
            Alternator bracket failures
            Premature instrument and avionics failures
            Premature landing light failures
            Abnormal airframe and engine vibration

What are the Vibration Limits?

Hartzell Standard Practices manual calls for Dynamic Balance of .2 inches per second (IPS) or better.
Propellers running greater than 1.2 IPS vibration must be removed for static balance

How Is Dynamic Propeller Balancing Accomplished?

Pedron Aircraft Works in Denton, TX, utilizes state of the art digital balancing equipment consisting of a Balance Computer, an accelerometer to detect vibration amplitude,
a photocell to determine balance clock position and engine RPM, and dedicated computer software for vibration analysis; generating logbook and balance history printouts.

Sensor attachment is non invasive. After equipment is attached, 3-5 balance runs are accomplished.

Once analysis is accomplished, small amounts of trim weight are attached at prescribed phase angles in accordance with approved procedures and in amounts to compensate for mass imbalance.

When Should I Balance My Propeller/s?

       Propeller Balancing should be accomplished every 500 hours-time in service or after any maintenance requiring major propeller blending.

      Propeller balancing should be accomplished after propeller or major engine component removal or replacement, including engine or prop overhaul.

What Results Can I Expect?

Pilots and passengers WILL notice the difference. Decreased vibration means decreased physical and structural fatigue.

As the owners and operators you can expect decreased maintenance costs related to vibration induced wear and failures.