  The purely leptonic decays D -> e nu and Ds -> e nu, for which no
experimental limits exist, are highly suppressed in the Standard Model. Mere
observation of these decays at the B factories BELLE/BaBar or forthcoming
CLEO-c would be a clear signal of physics beyond the SM. We show that R parity
violating slepton contributions can give rise to spectacular enhancements of
the decay rates, resulting in branching ratios as large as 5 x 10^-3, which
strongly motivates a search in these channels.
