The S3-3 data set has been examined for examples of perpendicular ion acceleration with simultaneous broadband plasma wave data. One event was found. Plasma waves in the frequency range is lower hybrid waves and in the frequency range for Doppler-shifted 0+ ion cyclotron waves modestly correlated with the perpendicular ion acceleration, although their electric field amplitudes were less than that assumed in present theories of ion acceleration: about 0.2--6 mV/m (rms) for the LHR waves and 4--9 mV/m (rms) for the possibly Doppler-Shifter 0+ cyclotron waves. Plasma waves propagating above the LHR frequency very briefly reached a value of 30 mV/m (rms), but during most of the event their amplitude was below 10 mV/m (rms). No evidence was found for the existence of H+ cyclotron waves during the period perpendicular ion acceleration. The thermal or superthermal (E<170 eV) electron field-aligned current density, estimated by subtracting the current density measured by the electron spectrometer from that measured by the magnetometer, correlated very well with the period of perpendicular ion acceleration. However, the drift velocity was too small to excite instabilities locally.