  Motivated by the recent SuperKamiokande results on atmospheric neutrinos, we
incorporate massive neutrinos, with large angle oscillation between the second
and third generations, in a theory with R-parity violating supersymmetry. The
general features of such a theory are briefly reviewed. We emphasize its
testability through the observation of comparable numbers of muons and taus,
produced together with the W-boson, in decays of the lightest neutralino. A
distinctly measurable decay gap is another remarkable feature of such a
scenario.
