  Signal of the rare radiative decay PHI--->ETA+PI0+GAMMA was observed in the
SND experiment at VEPP-2M electron-positron collider.The result is based on the
analysis of data, corresponding to a total integrated luminosity of 4 pb^{-1},
or 8x10^6 PHI mesons produced. The measured branching ratio of
PHI--->ETA+PI0+GAMMA decay is equal to (0.83+-0.23)x10^{-4}.
