If the auroral kilometric radiation were generated by loss cone lasing on closed field lines, as has been proposed, then it should cause substantial auroral precipitation by the pitch angle scattering of energetic electrons into the loss cone. A rough estimate for this precipitation, based upon the observed auroral kilometric radiation (AKR) amplitudes, would implify a flux of at least 2¿108 el/cm2 s over the projected ionospheric footprint of an individual laser and, if most of the AKR radio lasers occupied the same electron drift an L shell, an arc of 8 km width with a minimum average flux of roughly 109 el/cm2 s. It is believed that this will account for auroral arcs and other aspects of auroral electron precipitation. ¿ American Geophysical Union