Inverted V events generally occur in the premidnight sector over the auroral zone are frequently associated with the reversals in the convection electric field. Such a reversal is observed by the University of Iowa quadrispherical LEPEDEA on board ISEE 1 at an altitute of 13 RE on May 1, 1978. The bulk flow of the plasma shows a large shear over a 5-minute interval. The associated change in the convection electric field is 5.1 mV m-1. Large values of the field-aligned current are simultaneously detected. The potential structure appears to extend to the satellite location. Using a theoretical model, we have calculated th field-aligned current due to the electric field discontinuity. The magnitude of the parallel potential drop and width of the inverted V region are consistent with observation.