While building float 0648, an unusual event happened whereby the SBE41 pump spontaneously started running and stayed running for as long as power was applied. The CTD was returned to SeaBird but they could not reproduce the problem and returned it unfixed to UW. The float failed to transmit its first profile and the reason is presumed to be due to battery depletion by a continuously running CTD pump. -dds 06/26/05