Abstract. Proposed is the method for the analysis of parameter uncertainty effects on the accuracy of vibration-based elastic parameter identification. The method uses the approach of minimization of the discrepancy between physically measured and numerically calculated natural frequencies. The Monte Carlo simulation is used for obtaining correlations between frequency deviations. These correlation coefficients and deviations of physical frequency measurements are used for confidence interval calculations for identified parameters. The method gives the possibility of optimal choice of frequency sets and weighting coefficients for identification of each identifiable parameter.