A highly effective vibration-reduction service for propeller-driven aircraft, dynamic balancing identifies and corrects one-per-revolution imbalance to reduce fatigue, protect engines, mounts, and avionics, and improve comfort across operating ranges. Its productivity and sensitivity have made on-aircraft balancing a common line-maintenance practice.
In simplified terms, a vibration sensor (accelerometer) and optical tachometer are installed near the spinner, and the engine is run at selected RPM to capture amplitude and phase data. An analyzer computes a corrective solution by first applying a small trial weight, then calculating the final correction mass and clock position on the spinner or bulkhead. Weights are installed, and follow-up runs confirm residual vibration levels against target tolerances. When no significant imbalance exists, baseline vectors remain low and stable across RPM, indicating acceptable dynamic balance.