Copyright © 2000 by ASME.A Navier-Stokes solution method with overset grids is employed to compute the Influence Wave Modes of a compressor cascade in transonic flow conditions. The computed predictions are compared against the experimental data and the predictions based on Traveling Wave Mode computations performed using a different Navier-Stokes solver. In the present method, a five-passage flow domain is discretized with O-type subgrids around each blade and a rectangular background subgrid, A simple, robust numerical algorithm is used to localize moving intergrid boundary points, and to interpolate solution variables across the subgrids. The influence wave mode computation predicts a strong influence of the pitching mid-blade on the shock position of the neighboring blades. The predictions agree with the experimental data fairly well, and shows an improvement over the Traveling Wave Mode predictions.